XCM524 TOREX | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 52
Technical content
600mA Synchronous Step-Down DC/DC Converter + 500mA LDO with Delay Function Voltage Detector ˙GENERAL DESCRIPTION The XCM524 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous step–down DC/DC converter and a high speed, high current LDO regu lator with voltage detector function. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications. The DC/DC converter and the LDO blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal. The DC/DC converter block with a built-in 0.42ЊP-channel MOS driver transistor and 0.52ЊN-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The DC/DC enables a high efficiency, stable power supply with an output current of 600mA to be configured using only a coil and two capacitors connected externally. The LDO regulator block is precise, low noise, high ripple rejection, low dropout positive voltage regulators with built-in voltage detector. The LDO is also compatible with low ESR ceramic output capacitors. Good output stability is maintained during load fluctuations due to its excellent transient response. The current limiter's fold back circuit also operates as a short circuit protection for the output current. The voltage detector block of the contains delay circuit. The delay time can be controlled by an external capacitor. The detector monitors the input voltage of the voltage regulator. ˙APPLICATIONS
- BD, DVD drives
- HDD drives
- Cameras, Video recorders
- Mobile phones, Smart phones
- Various general-purpose power supplies ˙çTYPICAL APPLICATION CIRCUIT ETR2428-003 (TOP VIEW) ˙FEATURES <DC/DC Convertor Block> Input Voltage Range : 2.7V ~ 6.0V Output Voltage Options : 0.8V ~ 4.0V (±2 ˋ) High Efficiency : 92% (TYP .) Output Current : 600mA (MAX.) Oscillation Frequency : 1.2MHz, 3.0MHz (+ 15%) Current Limiter Circuit Built-In : Constant Current & Latching Control Methods : PWM PWM/PFM Auto *Performance depends on external components and wiring on PCB wiring. <Regulator Block> Maximum Output Current : 500mA (Limiter 600mA TYP.) (2.5V ʽVROUTʽ4.9V) Dropout Voltage : 200mV@I ROUT=100mA (TYP.) Operating Voltage Range : 2.0V ~ 6.0V Output Voltage Options : 0.9V ~ 5.1V (0.1V increments, ±2 ˋ) Detect Voltage Options : 2.0V ~ 5.5V (0.1V increments, ±2 ˋ) VR.VD Temperature Stability :±100ppm/ ˆ (TYP.) High Ripple Rejection : 65dB (@10kHz) Low ESR Capacitor : Ceramic Capacitor Operating Temperature Range : -40ˆ ~ +85ˆ Package : USP-12B01 Environmentally Friendly : EU RoHS Compliant, Pb Free
1 V DOUT V DOUT -
2 V SS V SS -
3 Cd Cd -
4 V IN2 - V IN
5 PGND - PGND
6 Lx - Lx
7 DCOUT - VOUT
8 AGND - AGND
9 EN2 - CE
10 V IN1 V IN1 -
11 NC - -
12 V ROUT V ROUT -
1 VDOUT VDR Block: VD Output Voltage
2 V SS VDR Block: Ground
3 Cd VDR Block: Delay Capacitor connection
4 V IN2 DC/DC Block: Power Input
5 PGND DC/DC Block: Power Ground
6 Lx DC/DC Block: Switching Connection
7 DCOUT DC/DC Block: Output Voltage
8 AGND DC/DC Block: Analog Ground
9 EN2 DC/DC Block: ON/OFF Control
10 V IN1 VDR Block: Power Input
11 NC No Connection
12 V ROUT VDR Block: LDO Output
˙PIN CONFIGURATIOIN ˙PIN ASSIGNMENT *DC/DC Ground pin (No.5 and 8) should be short before using the IC. * A dissipation pad on the reverse side of the package should be electrically isolated.ç *1: Voltage level of the VDR’s dissipation pad should be VSS level. *2: Voltage level of the DC/DC’s dissipation pad should be VSS level. Care must be taken for an electrical potential of each diss ipation pad so as to enhance mounting strength and heat release when the pad needs to be connected to the circuit. (TOP VIEW) (BOTTOM VIEW)
˔Ordering Information XCM524A①②③④⑤-⑥ (*1)ç DC/DC Block: PWM fixed control XCM524B①②③④⑤-⑥ (*1)ç DC/DC Block: PWM/PFM automatic switching control ˔DESIGNATORᶃ DC/DC BLOCK VDR BLOCK ① OSCILLATION FREQUENCY CL DISCHARGE SOFT START VD DELAY FUNCTION VD SENSE PIN VD OUTPUT LOGIC A 1.2M Not Available Standard Available V IN Active Low Detect B 3.0M Not Available Standard Available V IN Active Low Detect C 1.2M Available High Speed Available V IN Active Low Detect D 3.0M Available High Speed Available V IN Active Low Detect ˔DESIGNATOR②③ ②③ VDCOUT VROUT VDF 01 1.0 3.3 3.7 02 1.2 3.3 3.7 03 1.5 3.3 3.7 04 1.8 3.3 4.2 05 3.3 1.8 2.8 06 1.8 2.5 2.8 DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION ① Oscillation Frequency and Options － See the chart below ②③ Output Voltage － See the chart below ④⑤-⑥ Packages Taping Type (*2) DR-G USP-12B01 ˙PRODUCT CLASSIFICATION (*1) The XCM524 series is Halogen and Antimony free as well as being fully RoHS compliant. (*2) The device orientation is fixed in its embossed tape pocket. *This series are semi-custom products. For other combinations of output voltages please consult with your Torex sales contact.
ç ççççççççççççççççççççççççççççççççççççççççççççççççççççççç T a = 2 5ˆ *1 I ROUT= Less than Pd /ʢVIN1-VROUTʣ *2 The power dissipation figure shown is PCB mounted. Please refer to page 50 for details. Please also note that the power di ssipation is for each channel. ç PARAMETER SYMBOL RATINGS UNITS VIN1Voltage V IN1 7.0 V VROUT Current I ROUT 700 (*1) mA VROUT Voltage V ROUT V SS - 0.3 ʙ V IN1 + 0.3 V VDOUT Current I DOUT 50 mA VDOUT Voltage V DOUT V SS -0.3 ʙ 7.0 V Cd Voltage V Cd V SS - 0.3 ʙ V IN1 + 0.3 V VIN2 Current VIN2 -0.3 ʙ 6.5 V Lx Voltage VLx -0.3 ʙ V IN2 + 0.3 ʽ 6.5 V DCOUT Voltage V DCOUT -0.3 ʙ 6.5 V EN2 Voltage V EN2 -0.3 ʙ 6.5 V Lx Current I Lx ʶ1500 mA USP-12B01 150 800 (Only 1ch operation) Power Dissipation USP-12B01 (PCB mounted (*2)) Pd 600 (Both 2ch operation) mW Junction Temperature Tj 125 ˆ Operating Temperature Range Topr - 40 ʙ + 85 ˆ Storage Temperature Range Tstg - 55 ʙ + 125 ˆ Error Amp. Vref with Soft Start, CE Phase Compensation PWM/PFM Selector Current Feedback Current Limit PWM Comparator Logic Synch Buffer Drive UVLO UVLO Cmp Ramp Wave Generator OSC Lx CE/MODE Control Logic CE/ VSHORT CE Error Amp. Vref with Soft Start, CE Phase Compensation PWM/PFM Selector Current Feedback Current Limit PWM Comparator Logic Synch Buffer Drive UVLO UVLO Cmp Ramp Wave Generator OSC Lx VSS VIN VOUT CE/MODE Control Logic VSHORT Step-Down DC/DC Step-Down DC/DC Available with CL Discharge, High Speed Soft-Start VSS VIN VOUT CE ˙BLOCK DIAGRAMS ˙ABSOLUTE MAXIMUM RATINGS * A fixed PWM control scheme because that the “CE Control Logic” outputs a low level signal to the “PWM/PFM Selector”. * An auto PWM/PFM switching control scheme because the “CE Control Logic” outputs a high level signal to the “PWM/PFM Selector”. *Diodes inside the circuit are an ESD protection diode and a parasitic diode.
PARAMETER SYMBOL CONDITIONS MIN. TYP . MAX. UNITS CIRCUIT Output Voltage (*2, 3) V ROUT(E) I ROUT=30mA ×0.98 V ROUT(T) ×1.02 V ᶃ Maximum Output Current (0.9 ~ 2.4V) IROUTMAX V IN1=VROUT(T)+2.0V 400 - - mA ᶃ Maximum Output Current (2.5 ~ 4.9V) IROUTMAX VIN1=VROUT(T)+2.0V Higher than VROUT(T)= 4.0V, VIN1=6.0V 500 - - mA ᶃ Load Regulation ˚VROUT 1mAʽIROUTʽ100mA - 15 50 mV ᶃ Vdif1 IROUT=30mA E-1 mV ᶃ Dropout Voltage (*4) Vdif2 IROUT=100mA E-2 mV ᶃ Supply Current (FV / FX / FY / FZ series) IDD VIN1=VROUT(T)+1.0V VROUT(T)ʽ0.9V, VIN1=2.0V - 90 145 μA ᶄ Line Regulation ˚VROUT/ (VIN1ŋVROUT) VROUT(T)+1.0VʽVIN1ʽ6.0V VROUT(T)ʽ0.9V, 2.0VʽVIN1ʽ6.0V IROUT=30mA VROUT(T)ʽ1.75V, IROUT=10mA Input Voltage V IN1 2.0 - 6.0 V - Output Voltage Temperature Characteristics ˚VROUT/ (˚ToprŋVROUT) IROUT=30mA -40ˆʽToprʽ85ˆ - ʶ100 - ppm / ˆ ᶃ Ripple Rejection Rate PSRR VIN1=[VROUT(T)+1.0]V+0.5Vp-pAC When VROUT(T)ʽ1.25V, VIN1=2.25V+0.5Vp-pAC When VROUT(T)ʾ4.75V, VIN1=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz - 65 - dB ᶅ Current Limiter (2.4V or less) IRLIMl V IN1=VROUT(T)+2.0V - 600 - mA ᶃ Current Limiter (2.5V or more) IRLIM VIN1=VROUT(T)+2.0V Higher than VROUT(T)= 4.0V, VIN1=6.0V 500 600 - mA ᶃ VOLTAGE REGULATOR Short-Circuit Current I RSHORT VIN1=VROUT(T)+2.0V Higher than VROUT(T)= 4.0V, VIN1=6.0V - 50 - mA ᶃ Detect Voltage (*7, 8) V DF(E) ×0.98 V DF(T) ×1.02 V ᶆ Hysteresis Range (*8) V HYS VDF(T) ×0.02 VDF(T) ×0.05 VDF(T) ×0.08 V ᶆ VIN1 = 2.0V 3.0 6.0 - VIN1 = 3.0V 4.0 8.0 - VIN1 = 4.0V 5.0 10.0 - VIN1 = 5.0V 7.0 12.0 - Supply Current (*9) I DOUT V DOUT = 0.5V VIN1 = 6.0V 10.0 15.0 - mA ᶇ VOLTAGE DETECTOR Detect Voltage Temperature Stability ˚VDF/ (ToprŋVDF) -40ˆʽToprʽ85ˆ - ±100 - ppm / ˆ ᶆ Delay Resistance R delay VIN1=6.0V, Cd=0V Delay Resistance =6.0V/Delay Current 300 500 700 k Ω ᶈ ˙ELECTRICAL CHARACTERISTICS Ta=25ˆ●XCM524xx 1ch (VDR Block) NOTE: *1 : Unless otherwise stated, (V IN1=VROUT(T)+1.0V) *2 : V ROUT(T)ɿSpecified VR output voltage *3 : V ROUT(E)ɿEffective VR output voltage. Refer to the E-0 chart for values less than V DF(T)ʽ1.5V. (i.e. the VR output voltage when "V ROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value). *4 : Vdif={V IN1 (*6) -VROUT1 (*5) *5 : A voltage equal to 98% of the VR output voltage whenever a stabilized V ROUT1=IROUT{VROUT(T)+1.0V} is input. *6 : V IN1ɿThe input voltage when VOUT1, which appears as input voltage is gradually decreased. *7 : V DF(T)ɿSpecified detect voltage value *8 : V DF(E)ɿEffective detect voltage value. *9 : VD output current is sink current at detect. * The electrical characteristics above are when the other channel is in stop.
ç ç SYMBOL E-0 E-1 E-1 OUTPUT VOLTAGE DETECT VOLTAGE DROPOUT VOLTAGE 1 (mV) (IOUT=30mA) DROPOUT VOLTAGE 2 (mV) (IOUT=100mA) ççç PARAMETER NOMINAL DETECT VOLTAGE OUTPUT VOLTAGE (V) Ta=25ˆ Ta=25ˆ VROUT(E) / VDF(E) Vdif1 Vdif1 Vdif2 Vdif2 VROUT(T) 0.90 0.870 0.930 1050 1100 1150 1200 1.00 0.970 1.030 1000 1100 1050 1200 1.10 1.070 1.130 900 1000 950 1100 1.20 1.170 1.230 800 900 850 1000 1.30 1.270 1.330 700 800 750 900 1.40 1.370 1.430 600 700 650 800 1.50 1.470 1.530 500 600 550 700 1.60 1.568 1.632 400 500 500 600 1.70 1.666 1.734 300 400 400 500 1.80 1.764 1.836 200 300 300 400 1.90 1.862 1.938 120 150 280 380 2.00 1.960 2.040 80 120 240 350 2.10 2.058 2.142 80 120 240 330 2.20 2.156 2.244 80 120 240 330 2.30 2.254 2.346 80 120 240 310 2.40 2.352 2.448 80 120 240 310 2.50 2.450 2.550 70 100 220 290 2.60 2.548 2.652 70 100 220 290 2.70 2.646 2.754 70 100 220 290 2.80 2.744 2.856 70 100 220 270 2.90 2.842 2.958 70 100 220 270 3.00 2.940 3.060 60 90 200 270 3.10 3.038 3.162 60 90 200 250 3.20 3.136 3.264 60 90 200 250 3.30 3.234 3.366 60 90 200 250 3.40 3.332 3.468 60 90 200 250 3.50 3.430 3.570 60 90 200 250 3.60 3.528 3.672 60 90 200 250 3.70 3.626 3.774 60 90 200 250 3.80 3.724 3.876 60 90 200 250 3.90 3.822 3.978 60 90 200 250 4.00 3.920 4.080 60 80 180 230 4.10 4.018 4.182 60 80 180 230 4.20 4.116 4.284 60 80 180 230 4.30 4.214 4.386 60 80 180 230 4.40 4.312 4.488 60 80 180 230 4.50 4.410 4.590 60 80 180 230 4.60 4.508 4.692 60 80 180 230 4.70 4.606 4.794 60 80 180 230 4.80 4.704 4.896 60 80 180 230 4.90 4.802 4.998 60 80 180 230 5.00 4.900 5.100 50 70 160 210 5.10 4.998 5.202 50 70 160 210 5.20 5.096 5.304 5.30 5.194 5.406 5.40 5.292 5.508 5.50 5.390 5.610 ˔Dropout Voltage ˙ELECTRICAL CHARACTERISTICS (Continued)
˙ELECTRICAL CHARACTERISTICS (Continued)
- XCM524xA 2ch (DC/DC Block) V DCOUT=1.8V, fOSC=1.2MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN2=5.0V VDCOUT(T)= Setting voltage NOTE: *1: Including hysteresis width of operating voltage. *2: EFFI = { ( output voltageʷoutput current ) öç( input voltageʷinput current) }ʷ100 *3: ON resistance (Њ)= (VIN2 - Lx pin measurement voltage) öç100mA *4: Design value *5: When temperature is high, a current of approximately 10ЖA (maximum) may leak. *6: Time until it short-circuits DCOUT with GND via 1Њof resistor from an operational state and is set to Lx=0V from current limit pulse generating. *7: VDCOUT(T)+1.2V<2.7V, VIN2=2.7V. *8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes. If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance. *9: Current limit denotes the level of detection at peak of coil current. *10: "H"ʹVIN2ʙVIN2 - 1.2V, "L" ʹ+ 0.1V ʙ - 0.1V *11: XCM524A series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions. * The electrical characteristics above are when the other channel is in stop. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage V DCOUT When connected to external components, VIN2=VEN2=5.0V,IOUT2=30mA 1.764 1.800 1.836 V ᶉ Operating Voltage Range V IN2 2.7 - 6.0 V ᶉ Maximum Output Current I OUT2MAX When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V (*8) 600 - - mA ᶉ UVLO Voltage V UVLO VEN2=VIN2ɼVDCOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ᶋ (XCM524AA) - 22 50 Supply Current I DD VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V (XCM524BA) - 15 33 ЖA ᶊ Stand-by Current I STB V IN2=5.0V,VEN2=0V,VDCOUT=VDCOUT(T)×1.1V - 0 1.0 ЖA ᶊ Oscillation Frequency f OSC When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V, IOUT1=100mA 1020 1200 1380 kHz ᶉ PFM Switching Current I PFM When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=VIN2, IOUT2=1mA (*11) 120 160 200 mA ᶉ PFM Duty Limit DTY LIMIT_PFM V EN2=VIN2=(C-1) IOUT2=1mA (*11) 200 % ᶉ Maximum Duty Cycle D MAX V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 100 - - % ᶋ Minimum Duty Cycle D MIN V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V - - 0 % ᶋ Efficiency (*2) EFFI When connected to external components, VEN2=VIN2ʹVDCOUT(T)+1.2V (*7) , IOUT2=100mA - 92 - % ᶉ Lx SW "H" ON Resistance 1 R LXH1 V IN2=VEN2=5.0V,VDCOUT=0V,ILX=100mA (*3) - 0.35 0.55 Ω ᶌ Lx SW "H" ON Resistance 2 R LXH2 V IN2=VEN2=3.6V,VDCOUT=0V,ILX=100mA (*3) - 0.42 0.67 Ω ᶌ Lx SW "L" ON Resistance 1 R LXL1 V IN2=VEN2=5.0V (*4) - 0.45 0.66 Ω ʵ Lx SW "L" ON Resistance 2 R LXL2 V IN2=VEN2=3.6V (*4) - 0.52 0.77 Ω ʵ Lx SW "H" Leak Current (*5) I LEAKH V IN2=VDCOUT=5.0V,VEN2=0V,LX=0V - 0.01 1.0 ЖA ᶍ Lx SW "L" Leak Current (*5) I LEAKL V IN2=VDCOUT=5.0V,VEN2=0V,LX=5.0V - 0.01 1.0 ЖA ᶍ Current Limit (*9) I LIM V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 900 1050 1350 mA ᶎ Output Voltage Temperature Characteristics ˚ VDCOUT/ (VDCOUTŋ˚T opr) IOUT2=30mA -40ˆʽToprʽ85ˆ - ±100 - ppm/ ˆ ᶉ EN "H" Voltage V ENH VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ᶋ EN "L" Voltage V ENL VDCOUT=0V, Applied voltage to VEN2 Voltage changes Lx to “L” level (*10) VSS - 0.25 V ᶋ EN "H" Current I ENH V IN2=VEN2=5.0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ EN "L" Current I ENL V IN2=5.0V,VEN2=0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ Soft Start Time t SS When connected to external components, VEN2=0V→VIN2,IOUT1=1mA 0.5 1.0 2.5 ms ᶉ Latch Time t LAT VIN2=VEN2=5.0V, VDCOUT=0.8×VDCOUT(T) Short Lx at 1Ω resistance (*6) 1.0 - 20.0 ms ᶏ Short Protection Threshold Voltage VSHORT Sweeping VDCOUT, VIN2=VEN2=5.0V, Short Lx at 1Ω resistance, DCOUT voltage which Lx becomes “ Lx=L ” within 1ms 0.675 0.900 1.125 V ᶏ
˙ELECTRICAL CHARACTERISTICS (Continued)
- XCM524xB 2ch (DC/DC BLOCK) V DCOUT=1.8V, fOSC=3.0MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN2=5.0V VDCOUT(T)= Setting voltage NOTE: *1: Including hysteresis width of operating voltage. *2: EFFI = { ( output voltageʷoutput current ) öç( input voltageʷinput current) }ʷ100 *3: ON resistance (Њ)= (VIN2 - Lx pin measurement voltage) öç100mA *4: Design value *5: When temperature is high, a current of approximately 10ЖA (maximum) may leak. *6: Time until it short-circuits DCOUT with GND via 1Њof resistor from an operational state and is set to Lx=0V from current limit pulse generating. *7: VDCOUT(T)+1.2V<2.7V, VIN2=2.7V. *8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes. If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance. *9: Current limit denotes the level of detection at peak of coil current. *10: "H"ʹVIN2ʙVIN2 - 1.2V, "L" ʹ+ 0.1V ʙ - 0.1V *11: XCM524A series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions. * The electrical characteristics above are when the other channel is in stop. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage V DCOUT When connected to external components, VIN2=VEN2=5.0V,IOUT2=30mA 1.764 1.800 1.836 V ᶉ Operating Voltage Range V IN2 2.7 - 6.0 V ᶉ Maximum Output Current I OUT2MAX When connected to external components, VIN2= VDCOUT(T)+2.0V,VEN1=1.0V (*8) 600 - - mA ᶉ UVLO Voltage V UVLO VEN2=VIN2ɼVDCOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ᶋ (XCM524AB) - 46 65 Supply Current I DD VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V (XCM524BB) - 21 35 ЖA ᶊ Stand-by Current I STB V IN2=5.0V,VEN2=0V,VDCOUT=VDCOUT(T)×1.1V - 0 1.0 ЖA ᶊ Oscillation Frequency f OSC When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V, IOUT2=100mA 2550 3000 3450 kHz ᶉ PFM Switching Current I PFM When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=VIN2, IOUT2=1mA (*11) 170 220 270 mA ᶉ PFM Duty Limit DTY LIMIT_PFM V EN2=VIN2=(C-1) IOUT2=1mA (*11) 200 300 % ᶉ Maximum Duty Cycle D MAX V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 100 - - % ᶊ Minimum Duty Cycle D MIN V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V - - 0 % ᶊ Efficiency (*2) EFFI When connected to external components, VEN2=VIN2ʹVDCOUT(T)+1.2V (*7) , IOUT2=100mA - 86 - % ᶉ Lx SW "H" ON Resistance 1 R LXH1 V IN2=VEN2=5.0V,VDCOUT=0V,ILX=100mA (*3) - 0.35 0.55 Ω ᶌ Lx SW "H" ON Resistance 2 R LXH2 V IN2=VEN2=3.6V,VDCOUT=0V,ILX=100mA (*3) - 0.42 0.67 Ω ᶌ Lx SW "L" ON Resistance 1 R LXL1 V IN2=VEN1=5.0V (*4) - 0.45 0.66 Ω ʵ Lx SW "L" ON Resistance 2 R LXL2 V IN2=VEN1=3.6V (*4) - 0.52 0.77 Ω ʵ Lx SW "H" Leak Current (*5) I LEAKH V IN2=VDCOUT=5.0V,VEN2=0V,LX=0V - 0.01 1.0 ЖA ᶍ Lx SW "L" Leak Current (*5) I LEAKL V IN2=VDCOUT=5.0V,VEN2=0V,LX=5.0V - 0.01 1.0 ЖA ᶍ Current Limit (*9) I LIM V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 900 1050 1350 mA ᶎ Output Voltage Temperature Characteristics ˚VDCOUT/ (VDCOUTɾ˚topr) IOUT2=30mA -40ˆʽToprʽ85ˆ - ±100 - ppm/ ˆ ᶉ EN "H" Voltage V ENH VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ᶋ EN "L" Voltage V ENL VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “L” level (*10) VSS - 0.25 V ᶋ EN "H" Current I ENH V IN2=VEN2=5.0V, VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ EN "L" Current I ENL V IN2=5.0V, VEN2=0V, VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ Soft Start Time t SS When connected to external components, VEN2=0V→VIN2,IOUT2=1mA 0.5 0.9 2.5 ms ᶉ Latch Time t LAT VIN2=VEN2=5.0V,VDCOUT=0.8×VDCOUT(T) Short Lx at 1Ω resistance (*6) 1.0 - 20.0 ms ᶏ Short Protection Threshold Voltage VSHORT Sweeping VDCOUT, VIN2=VEN2=5.0V, Short Lx at 1Ω resistance, DCOUT voltage which Lx becomes “ Lx=L ” within 1ms 0.675 0.900 1.125 V ᶏ
˙ELECTRICAL CHARACTERISTICS (Continued)
- XCM524xC 2ch (DC/DC BLOCK) V DCOUT=1.8V, fOSC=1.2MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN2=5.0V VDCOUT(T)= Setting voltage NOTE: *1: Including hysteresis width of operating voltage. *2: EFFI = { ( output voltageʷoutput current ) öç( input voltageʷinput current) }ʷ100 *3: ON resistance (Њ)= (V IN2 - Lx pin measurement voltage) öç100mA *4: Design value *5: When temperature is high, a current of approximately 10ЖA (maximum) may leak. *6: Time until it short-circuits DCOUT with GND via 1Њof resistor from an operational state and is set to Lx=0V from current limit pulse generating. *7: VDCOUT(T)+1.2V<2.7V, VIN2=2.7V. *8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes. If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance. *9: Current limit denotes the level of detection at peak of coil current. *10: "H"ʹVIN2ʙVIN2 - 1.2V, "L" ʹ+ 0.1V ʙ - 0.1V *11: XCM524A series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions. * The electrical characteristics above are when the other channel is in stop. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage V DCOUT When connected to external components, VIN2=VEN2=5.0V,IOUT1=30mA 1.764 1.800 1.836 V ᶉ Operating Voltage Range V IN2 2.7 - 6.0 V ᶉ Maximum Output Current I OUT2MAX When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V (*8) 600 - - mA ᶉ UVLO Voltage V UVLO VEN2=VIN2ɼVDCOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ᶋ (XCM524AC) - 22 50 Supply Current I DD VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V (XCM524BC) - 15 33 ЖA ᶊ Stand-by Current I STB V IN2=5.0V,VEN2=0V,VDCOUT=VDCOUT(T)×1.1V - 0 1.0 ЖA ᶊ Oscillation Frequency f OSC When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V, IOUT2=100mA 1020 1200 1380 kHz ᶉ PFM Switching Current I PFM When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=VIN2, IOUT2=1mA (*11) 120 160 200 mA ᶉ PFM Duty Limit DTY LIMIT_PFM V EN2=VIN2=(C-1)IOUT2=1mA (*11) - 200 % ᶉ Maximum Duty Cycle D MAX V IN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×0.9V 100 - - % ᶋ Minimum Duty Cycle D MIN V IN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×1.1V - - 0 % ᶋ Efficiency EFFI When connected to external components, VEN2=VIN2ʹVDCOUT(T)+1.2V (*7) , IOUT2=100mA - 92 - % ᶉ Lx SW "H" ON Resistance 1 R LXH1 V IN2=VEN2=5.0V,VDCOUT=0V,ILX=100mA (*3) - 0.35 0.55 Ω ᶌ Lx SW "H" ON Resistance 2 R LXH2 V IN2=VEN2=3.6V,VDCOUT=0V,ILX=100mA (*3) - 0.42 0.67 Ω ᶌ Lx SW "L" ON Resistance 1 R LXL1 V IN2=VEN2=5.0V (*4) - 0.45 0.66 Ω ʵ Lx SW "L" ON Resistance 2 R LXL2 V IN2=VEN2=3.6V (*4) - 0.52 0.77 Ω ʵ Lx SW "H" Leak Current (*5) I LEAKH V IN1=VDCOUT=5.0V,VEN1=0V,LX=0V - 0.01 1.0 ЖA ᶑ Current Limit (*9) I LIM V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 900 1050 1350 mA ᶎ Output Voltage Temperature Characteristics ˚ VDCOUT/ (VDCOUTɾ˚topr) IOUT2=30mA -40ˆʽToprʽ85ˆ - ±100 - ppm/ ˆ ᶉ EN "H" Voltage V ENH VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ᶋ EN "L" Voltage V ENL VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “L” level (*10) VSS - 0.25 V ᶋ EN "H" Current I ENH V IN2=VEN2=5.0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ EN "L" Current I ENL V IN2=5.0V,VEN2=0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ Soft Start Time t SS When connected to external components, VEN2=0V→VIN2, IOUT2=1mA - 0.25 0.40 ms ᶉ Latch Time t LAT VIN2=VEN2=5.0V,VDCOUT=0.8×VDCOUT(T) Short Lx at 1Ω resistance (*6) 1.0 - 20 ms ᶏ Short Protection Threshold Voltage VSHORT Sweeping VDCOUT, VIN2=VEN2=5.0V, Short Lx at 1Ω resistance, DCOUT voltage which Lx becomes “ Lx=L ” within 1ms 0.675 0.900 1.150 V ᶏ CL Discharge R DCHG V IN2=5.0V,LX=5.0V,VEN2=0V,VDCOUT=open 200 300 450 Ω ᶐ
˙ELECTRICAL CHARACTERISTICS (Continued)
- XCM524xD 2ch (DC/DC BLOCK) V DCOUT=1.8V, fOSC=3.0MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN2=5.0V VDCOUT(T)= Setting voltage NOTE: *1: Including hysteresis width of operating voltage. *2: EFFI = { ( output voltageʷoutput current ) öç( input voltageʷinput current) }ʷ100 *3: ON resistance (Њ)= (VIN2 - Lx pin measurement voltage) öç100mA *4: Design value *5: When temperature is high, a current of approximately 10ЖA (maximum) may leak. *6: Time until it short-circuits DCOUT with GND via 1Њof resistor from an operational state and is set to Lx=0V from current limit pulse generating. *7: VDCOUT(T)+1.2V<2.7V, VIN2=2.7V. *8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes. If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance. *9: Current limit denotes the level of detection at peak of coil current. *10: "H"ʹVIN2ʙVIN2 - 1.2V, "L" ʹ+ 0.1V ʙ - 0.1V *11: XCM524A series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions. * The electrical characteristics above are when the other channel is in stop. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage V DCOUT When connected to external components, VIN2=VEN2=5.0V,IOUT2=30mA 1.764 1.800 1.836 V ᶉ Operating Voltage Range V IN2 2.7 - 6.0 V ᶉ Maximum Output Current I OUT2MAX When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V (*8) 600 - - mA ᶉ UVLO Voltage V UVLO VEN2=VIN2ɼVDCOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ᶋ (XCM524AD) - 46 65 Supply Current I DD VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V (XCM524BD) - 21 35 ЖA ᶊ Stand-by Current I STB V IN2=5.0V,VEN2=0V,VDCOUT=VDCOUT(T)×1.1V - 0 1.0 ЖA ᶊ Oscillation Frequency f OSC When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V, IOUT2=100mA 2550 3000 3450 kHz ᶉ PFM Switching Current I PFM When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=VIN2, IOUT2=1mA (*11) 170 220 270 mA ᶉ PFM Duty Limit DTY LIMIT_PFM V EN2=VIN2=(C-1)IOUT2=1mA (*11) - 200 300 % ᶉ Maximum Duty Cycle D MAX V IN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×0.9V 100 - - % ᶋ Minimum Duty Cycle D MIN V IN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×1.1V - - 0 % ᶋ Efficiency EFFI When connected to external components, VEN2=VIN2ʹVDCOUT(T)+1.2V (*7) , IOUT2=100mA - 86 - % ᶉ Lx SW "H" ON Resistance 1 R LXH1 V IN2=VEN2=5.0V,VDCOUT=0V,ILX=100mA (*3) - 0.35 0.55 Ω ᶌ Lx SW "H" ON Resistance 2 R LXH2 V IN2=VEN2=3.6V,VDCOUT=0V,ILX=100mA (*3) - 0.42 0.67 Ω ᶌ Lx SW "L" ON Resistance 1 R LXL1 V IN2=VEN2=5.0V (*4) - 0.45 0.66 Ω ʵ Lx SW "L" ON Resistance 2 R LXL2 V IN2=VEN2=3.6V (*4) - 0.52 0.77 Ω ʵ Lx SW "H" Leak Current (*5) ILeakH V IN2=VDCOUT=5.0V,VEN2=0V,LX=0V - 0.01 1.0 ЖA ᶑ Current Limit (*9) I LIM V IN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 900 1050 1350 mA ᶎ Output Voltage Temperature Characteristics ˚ VDCOUT/ (VDCOUT ɾ˚topr) IOUT2=30mA -40ˆʽToprʽ85ˆ - ±100 - ppm/ ˆ ᶉ EN "H" Voltage V ENH VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ᶋ EN "L" Voltage V ENL VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “L” level (*10) VSS - 0.25 V ᶋ EN "H" Current I ENH V IN2=VEN2=5.0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ EN "L" Current I ENL V IN2=5.0V,VEN2=0V,VDCOUT=0V - 0.1 - 0.1 ЖA ᶍ Soft Start Time t SS When connected to external components, VEN2=0V→VIN2, IOUT2=1mA - 0.32 0.50 ms ᶉ Latch Time t LAT VIN2=VEN2=5.0V,VDCOUT=0.8×VDCOUT(T) Short Lx at 1Ω resistance (*6) 1.0 - 20 ms ᶏ Short Protection Threshold Voltage VSHORT Sweeping VDCOUT, VIN2=VEN2=5.0V, Short Lx at 1Ω resistance, DCOUT voltage which Lx becomes “ Lx=L ” within 1ms 0.675 0.900 1.150 V ᶏ CL Discharge R DCHG V IN2=5.0V,LX=5.0V,VEN2=0V,VDCOUT=open 200 300 450 Ω ᶐ
˙ELECTRICAL CHARACTERISTICS (Continued) ˔PFM Switching Current (IPFM) by Oscillation Frequency and Output Voltage 1.2MHz (mA) SETTING VOLTAGE MIN. TYP. MAX. VDCOUT(T)≦1.2Ｖ 140 180 240 1.2V＜VDCOUT(T)≦1.75Ｖ 130 170 220 1.8V≦VDCOUT(T) 120 160 200 3.0MHz (mA) SETTING VOLTAGE MIN. TYP. MAX. VDCOUT(T)≦1.2Ｖ 190 260 350 1.2V＜VDCOUT(T)≦1.75Ｖ 180 240 300 1.8V≦VDCOUT(T) 170 220 270 ˔Measuring Maximum IPFM Limit, VIN2 Voltage fOSC 1.2MHz 3.0MHz (C-1) V DCOUT(T)+0.5V V DCOUT(T)+1.0V Minimum operating voltage is 2.7V ˔Soft-Start Time Chart (XCM524xC/ XCM524xD Series Only) ç PRODUCT SERIES fOSC OUTPUT VOLTAGE MIN. TYP. MAX. 1.2MHz 0.8VʽVDCOUT(T)<1.5V - 250Жs 400 Жsç 1.2MHz 1.5VʽVDCOUT(T)<1.8V - 320Жs 500 Жsç 1.2MHz 1.8VʽVDCOUT(T)<2.5V - 250Жs 400 Жsç XCM524AC 1.2MHz 2.5VʽVDCOUT(T)ʽ4.0V - 320Жs 500 Жsç 1.2MHz 0.8VʽVDCOUT(T)<2.5V - 250Жs 400 Жsç XCM524BC 1.2MHz 2.5VʽVDCOUT(T)ʽ4.0V - 320Жs 500 Жsç 3.0MHz 0.8VʽVDCOUT(T)<1.8V - 250Жs 400 Жsç XCM524xD 3.0MHz 1.8VʽVDCOUT(T)ʽ4.0V - 320Жs 500 Жsç ˙TYPICAL APPLICATION CIRCUIT ˔çDC/DC BLOCKç fOSC=3.0MHz CIN1 : 1 ЖF (Ceramic) CL1 : 1 ЖF (Ceramic) L : 1.5 ЖH (NR3015 TAIIYO YUDEN) CIN2 : 4 . 7 ЖF (Ceramic) CL2 : 1 0 ЖF (Ceramic) ˔çDC/DC BLOCKç fOSC =1.2MHz CIN1 : 1 ЖF (Ceramic) CL1 : 1 ЖF (Ceramic) L : 4.7 ЖH (NR4018 TAIIYO YUDEN) CIN2 : 4 . 7 ЖF (Ceramic) CL2 : 1 0 ЖF (Ceramic) L VIN CIN2 103 NC Lx VIN1 EN2 AGND DCOUT VSS Cd PGND VIN2 CIN1 CL2 CL1 VDCOUT EN2 VDOUT VROUT Rpull-up Cd VROUTVDOUT
Delay Time Rdelay standard : 300 ~ 700kЊ TYP : 500kЊ Cd DELAY TIME (TYP.) DELAY TIME (MIN.～MAX.) 0.01ЖF 3.5 ms 2.1 ~ 4.9 ms 0.022ЖF 7.7 ms 4.62 ~ 10.8 ms 0.047ЖF 16.5 ms 9.87 ~ 23.0 ms 0.1ЖF 35 ms 21.0 ~ 49.0 ms 0.22ЖF 77 ms 46.2 ~ 108.0 ms 0.47ЖF 165 ms 98.7 ~ 230.0 ms 1ЖF 350 ms 210.0 ~ 490.0 ms CL1 ≧4.7μF ≧2.2μF ≧1.0μF çççç ˙OPERATIONAL EXPLANATION ˔Voltage Regulator BLOCK The voltage divided by resistors R1 & R2 is compared with the internal reference voltage by the error amplifier. The P-channel MOSFET which is connected to the VROUT pin is then driven by the subsequent output signal. The output voltage at the VROUT pin is controlled & stabilized by a system of negative feedback. ˔Detector Function with the XC524 Series The series' detector function monitors the voltage divided by resistors R3 & R4, which are connected to the VROUT pin or the VIN1 pin or the VSEN pin, as well as monitoring the voltage of the internal reference voltage source via the comparator. The VDSEN pin has options. A 'High' or 'Low ' signal level can be output from the VDOUT pin when the VD pin voltage level goes below the detect voltage. The VD output logic has options. As VD OUT is an open-drain N-channel output, a pull-up resistor of about 220kЊis needed to achieve a voltage output. Because of hysteresis at the detector func tion, output at the VD OUT pin will invert when the detect voltage level increases above the release voltage (105% of the detect voltage). By connecting the Cd pin to a capacitor, the XCM524 series can apply a delay time to VDOUT voltage when releasing voltage. The delay time can be calculated from the internal resistance, Rdelay (500kЊ fixed) and the value of Cd as per the following equation. <Low ESR Capacitor> With the XCM524 series, a stable output voltage is achievable even if used with low ESR capacitors, as a phase compensation circuit is built-in. The output capacitor (C L1) should be connected as close to VROUT pin and VSS pin to obtain stable phase compensation. Also, please connect an input capacitor (C IN1) of 1.0ЖF between the VIN1 pin and the VSS pin. Delay Time = Cd x Rdelay x 0.7 ʜ(1) Output Capacitor Chart <Current Limit, Short-Circuit Protection> The XCM524 series’ fold-back circuit operates as an output current limiter and a short protection of the output pin. When the load current reaches the current limit level, the fixed current limiter circuit operates and out put voltage drops. When the output pin is shorted to the VSS level, current flows about 50mA. * The release delay time values above are calculated by using the formula (1). *1: The release delay time is influenced by the delay capacitance Cd.
˙OPERATIONAL EXPLANATION (Continued)ç ˔DC/DC BLOCK The DC/DC block of the XCM524 series consis ts of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, outpu t voltage adjustment resistors, P-channel MOSFET driver transistor, N-channel MOSFET switch transistor for the synchronous switch, current limiter circuit, UVLO circuit and others. (See the block diagram above.)ç The series ICs compare, using the error amplifier, the voltage of the internal voltage reference source with the feedback voltage from the DCOUT pin through split resist ors, R1 and R2. Phase compensation is performed on the resulting error amplifier output, to input a signal to the PWM com parator to determine the turn-on time during PWM operation. The PWM comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting output to the buffer dr iver circuit to cause the Lx pin to output a switching duty cycle. This process is continuously performed to ensure stable output voltage. The current feedback circuit monitors the P-channel MOS driver transistor current for each switching operation, and modulates the error amplifier output signal to prov ide multiple feedback signals. This enables a stable feedback loop even when a low ESR capacitor such as a ceramic capacitor is used ensuring stable output voltage. <Reference Voltage Source> The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter. <Ramp Wave Circuit> The ramp wave circuit determines switching frequency. The frequenc y is fixed internally and can be selected from 1.2MHz or 3.0MHz. Clock pulses generated in this circuit are used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits. <Error Amplifier> The error amplifier is designed to monitor output voltage. T he amplifier compares the refer ence voltage with the feedback voltage divided by the internal split resistors, R1 and R2. W hen a voltage is lower than the re ference voltage is fed back, the output voltage of the error amp lifier increases. The gain and frequency characte ristics of the error amplifier output are fixe d internally to deliver an optimized signal to the mixer. <Current Limit> The current limiter circuit of the XCM524series monitors the current flowing through the P-channel MOS driver transistor connected to the Lx pin, and features a combination of the current limit mode and the operation suspension mode. ᶃçWhen the driver current is greater than a specific level, the current limit function operates to turn off the pulses from the Lx pin at any given timing. ᶄçWhen the driver transistor is turned off, the limiter circuit is then released from the current limit detection state. ᶅçAt the next pulse, the driver transistor is turned on. However, the transistor is immediately turned off in the case of an over current state. ᶆçWhen the over current state is eliminated, the IC resumes its normal operation. The IC waits for the over current st ate to end by repeating the steps ᶃçthrough ᶅ. If an over current state continues for a few ms and the above three steps are repeatedly performed, t he IC performs the function of latching the OFF state of the P-channel driver transistor, and goes into operation suspension mode. Once the IC is in suspension mode, operations can be resumed by either turning the IC off via the CE/MODE pin, or by restoring power to the V IN2 pin. The suspension mode does not mean a complete shutdown, but a state in which pulse output is suspended; theref ore, the internal circuitry remains in operation. The current limit of the XCM524 series can be set at 1050mA at typical. Besides, care must be taken when laying out the PC Board, in order to prevent miss-operation of the current limit mode. Depe nding on the state of the PC Board, latch time may become longer and latch operation may not work. In order to avoid the effect of noise, the board should be laid out so that input capacitors are placed as close to the IC as possible.ç ç VIN2 VEN2 Lx VDCOUT ILx Current Limit LEVEL Limit<数ms Restart VSS 0mA Limit>数msLimitʻ#ms Limitʼ#ms
˙OPERATIONAL EXPLANATION (Continued) ç <Short-Circuit Protection>ç The short-circuit protection circuit monitors the internal R1 and R2 divider voltage from the DCOUT pin. In case where output is accidentally shorted to the Ground and when the FB point voltage decreases less than half of the reference voltage (Vref) and a current more than the I LIM flows to the driver transistor, the s hort-circuit protection quickly operates to turn off and to latch the P-channel MOS driver transistor. In latch state, the operation can be resumed by either turning the IC off and on via the EN2 pin, or by restoring power supply to the VIN2 pin. When sharp load transient happens, a voltage drop at the DCOUT pin is propagated to FB point through CFB, as a result, short circuit protection may operate in the voltage higher than 1/2 VOUT voltage. ç <UVLO Circuit> When the VIN2 pin voltage becomes 1.4V or lower, the P-channel output driver transistor is forced OFF to prevent false pulse output caused by unstable operation of the internal circuitry. When the V IN2 pin voltage becomes 1.8V or higher, switching operation takes place. By releasing the UVLO function, the IC performs the soft start function to initiate output startup operation. The soft start func tion operates even when the VIN pin voltage falls momentarily below the UVLO operating voltage. The UVLO circuit does not cause a complete shutdown of the IC, but causes puls e output to be suspended; therefore, the internal circuitry remains in operation. <PFM Switch Current> In the PFM control operation, until coil cu rrent reaches to a specified level (I PFM) , the IC keeps the P-ch MOSFET on. In this case, on-time (tON) that the P-ch MOSFET is kept on can be given by the following formula. tON = L×IPFM/(VIN2-VDCOUT) ˠIPFMᶃ <PFM duty Limit> In the PFM control operation, the PFM duty limit (DTY LIMIT_PFM) is set to 200% (TYP.). Therefor e, under the condition that the duty increases (e.g. the condition that the step-down ratio is small), it’s possible for P-ch MOSFET to be turned off even when coil current doesn’t reach to IPFM. çˠ IPFMᶄç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç ç PFM Duty Limit IPFMᶄ IPFMᶃ
˙OPERATIONAL EXPLANATION (Continued) <CL High Speed Discharge> XCM524 series can quickly discharge the electric charge at the output capacitor (CL2) when a low signal to the CE pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel MOS switch located between the LX pin and the VSS pin. When the IC is disabled, electric charge at the output capacitor (CL) is quickly discharged so that it may avoid application malfunction. Discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance (R) and the output capacitor (CL). By setting time constant of a CL auto-discharge resistance value [R] and an output capacitor value (CL2) as Н(Н=C x R), discharge time of the output voltage after discharge via the N channel transistor is calculated by the following formula. V = VDCOUT(T)×e -t /Нor t = НLn ( VDCOUT(T)/V) V : Output voltage after discharge, VDCOUT(T) : Output voltage after discharge t: Discharge time Н: C×R C = Capacitance of Output capacitorʢCL2ʣ R = CL auto-discharge resistance Output Voltage Relative Value 100 = Setting Voltage Value 100 0 1 02 03 04 05 06 07 08 09 0 1 0 0 CL=10uF CL=20uF CL=50uF ˙NOTE ON USE When the DC/DC converter and the VR are connected as VDCOUT=VIN1, the following points should be noted. 1. When larger value is used in DC/DC output capacitor C L2, the larger value is also used in CL1 as in proportional. Please be noted that when CL2 capacitance of the VR is getting large, an inrush current increases at VR start-up, DC/DC short circuit protection starts to operate, as a result, the IC may happen to stop. 50us/div EN2(5V/div) DCOUT(1V/div) VROUT(1V/div) IIN2(500mA/div) 短絡保護動作 * VR inrush current I IN1 makes DC/DC short-circuit protection to start, as a result, the IC may happen to stop. The left waver forms are taken at C L1=10Ж, C L2=10ЖF(in contrast to the recommended 1.0ЖF). short-circuit protection to start
ç ˙NOTE ON USE (Continued) <VDR BLOCK> 1. Please use this IC within the stated absolute maximum ra tings. The IC is liable to malfunction should the ratings be exceeded. 2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Especially, V IN1 and VSS wiring should be taken into consideration for reinforcement. 3. Please wire the input capacitor (CIN1) and the output capacitor (CL1) as close to the IC as possible. Care shall be taken for capacitor selection to ensure stability of phase compensation from the point of ESR influence. <DC/DC BLOCK> 1. The XCM524 series is designed for use with ceramic output capacitors. If, however, the potential difference is too large between the input voltage and the output vo ltage, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur on the output. If the input-out put potential difference is large, connect an electrolytic capacitor in parallel to compensate for insufficient capacitance. 2. Spike noise and ripple voltage arise in a switching regulato r as with a DC/DC converter. These are greatly influenced by external component selection, such as the coil inductance, capacitance values, and board layout of external components. Once the design has been completed, verification with actual components should be done. 3. As a result of input-output voltage and load conditions, oscillation frequency goes to 1/2, 1/3, and continues, then a ripple may increase. 4. When input-output voltage differential is large and light load conditions, a small duty cycle comes out. After that, 0%duty cycle may continue in several periods. 5. When input-output voltage different ial is small and heavy load conditions, a large duty cycle comes out and may continues100% duty cycle in several periods. 6. With the IC, the peak current of the co il is controlled by the current limit circ uit. Since the peak current increases when dropout voltage or load current is high, cu rrent limit starts operation, and this can lead to instability. When peak current becomes high, please adjust the coil inductance value and full y check the circuit operation. In addition, please calculate the peak current according to the following formula: Ipk =(VIN2-VDCOUT)×OnDuty/(2×L×fOSC) + IOUT2 LɿCoil Inductance Value fOSCɿOscillation Frequency 7. When the peak current which exceeds limit current flows wi thin the specified time, the built-in P-channel MOS driver transistor turns off. During the time until it detects limit current and before the P- channel built-in transistor can be turned off, the current for limit current flows; t herefore, care must be taken when selecting the rating for the external components such as a coil. 8. Depending on the state of the PC Board, latch time may become longer and latch operation may not work. In order to avoid the effect of noise, the board should be laid out so that input capacitors are placed as close to the IC as possible. 9. Use of the IC at voltages below the reco mmended voltage range may lead to instability. 10. This IC should be used within the stated absolute maxi mum ratings in order to prevent damage to the device. 11. When the IC is used in high temperature, output voltage may increase up to inpu t voltage level at no load because of the leak current of the P-channel MOS driver transistor.
˙NOTE ON USE (Continued) 12. The current limit is set to 1350mA (MAX.) at typical. However, the current of 1350mA or more may flow. In case that the current limit functions while the DCOUT pi n is shorted to the GND pin, when P-channel MOSFET is ON, the potential difference for input voltage will occur at both ends of a coil. For this, the time rate of coil current becomes large. By contrast, when N- channel MOSFET switch is ON, t here is almost no potential difference at both ends of the coil since the DCOUT pin is shorted to the GND pin. Consequently, the time rate of coil current becomes quite small. According to the repetition of this operation, and the delay time of the circuit, coil current will be converged on a certain current value, exceeding the amount of current, which is suppos ed to be limited originally. Even in this case, however, after the over current state continues for several ms, the circuit will be latched. A coil should be used within the stated absolute maximum rating in order to prevent damage to the device. ᶃCurrent flows into P-channel MOS driver transistor to reach the current limit (I LIM). ᶄThe current of ILIM or more flows since the delay time of the circuit occurs during from the detection of the current limit to OFF of P-channel MOS driver transistor. ᶅBecause of no potential difference at both ends of the coil, the time rate of coil current becomes quite small. ᶆLx oscillates very narrow pulses by the current limit for several ms. ᶇThe circuit is latched, stopping its operation. ç 13. In order to stabilize V IN1’s voltage level and oscillation frequency, we recommend that a by-pass capacitor (C IN2) be connected as close as possible to the VIN2 & VSS pins. 14. High step-down ratio and very light lo ad may lead an intermittent oscillation. 15. During PWM / PFM automatic switching mode, operating ma y become unstable at transition to continuous mode. Please verify with actual parts. ç ç ç # ms <External Components>
˙NOTE ON USE (Continued) 16.ç Please note the L value of the coil. The IC may enter unstable operation if the combination of ambient temperature, setting voltage, oscillation frequency, and L value are not adequate. ç ç 17. Under input-output voltage differential is large, operating may become unstable at transition to continuous mode. Please verify with actual parts. ˔Instructions of pattern layoutsç 1.ç Please use this IC within the stated absolute maximum rati ngs. The IC is liable to malfunction should the ratings be exceeded. 2.ç In order to stabilize V IN1ɾVIN2ɾDCOUTŋVROUT voltage level, we recommend that a by-pass capacitor (C IN1ɾCIN2ɾCL1ɾ CL2) be connected as close as possible to the VIN1ɾVIN2ɾDCOUTŋVROUT and GNDŋVSS pins. 3. Please mount each external component as close to the IC as possible. 4.ç Wire external components as close to the IC as possible an d use thick, short connecting traces to reduce the circuit impedance. 5. V SSʢAGNDɾPGNDɾVSSʣground wiring is recommended to get large area. The IC may goes into unstable operation as a result of VSS voltage level fluctuation during the switching. 6.ç This series’ internal driver transistors br ing on heat because of the output current (I OUT) and ON resistance of driver transistors. ˔Recommended Pattern Layout ˔The Range of L Valueç fOSC VDCOUT L Value VDCOUTʽ2.5V 3.3 ЖHʙ6.8ЖHç1.2MHz 2.5VʻVDCOUT 4.7 ЖHʙ6.8ЖHç *When a coil less value of 4.7 μH is used at when a coil less value of 1.5 μH is used at f OSC=3.0MHz, peak coil current more easily reach the current limit ILMI. In this case, it may happen that the IC can not provide 600mA output current.ç <External Components> <External Components> Front Back
CL ʾ4.7ЖF ʾ2.2ЖF ʾ1.0ЖF ˙TEST CIRCUITS Outpur Capacitor
˙TEST CIRCUITS (Continued)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 0.5 1.0 1.5 2.0 2.5 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUT ïVð 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUT ïVð 0.0 0.5 1.0 1.5 2.0 2.5 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð VIN=3.8V, CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 25ˆ Topr= - 40ˆ Topr= 85ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) VIN= 3.8V VIN= 2.1V VIN= 6.0V Topr= 25ˆ Topr= - 40ˆ Topr= 85ˆ VIN=5.0V, CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) VI N = 4.5V VI N = 2.8V VI N = 6.0V Topr= 25ˆ Topr= - 40ˆ Topr= 85ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) VIN= 5.0V VIN= 6.0V VIN=4.5V, CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) XC6405 Series (VR:1.8V) XC6405 Series (VR:1.8V) XC6405 Series (VR:2.5V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:3.0V) ˔1ch:VDR Block ʢ1ʣVR Output Voltage vs. VR Output Current ˙TYPICAL PERFORMANCE CHARACTERISTICS Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=1.8V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=1.8V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=2.5V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=2.5V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=3.0V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=3.0V VIN1=5.0V VIN1=3.8V VIN1=4.5V
0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 0.3 0.6 0.9 1.2 1.5 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 0.3 0.6 0.9 1.2 1.5 0 100 200 300 400 500 600 700 Output Current IROUT(mA) Output Voltage VROUTïVð 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 100 200 300 400 500 600 700 Output Current IROUT (m A) Output Voltage VROUT ïVð VIN=6.0V, CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 25ˆ Topr= - 40ˆ Topr= 85ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) VIN= 6.0V VIN=2.9V, CIN=1.0ЖF (ceram ic), CL=4.7ЖF (ceramic) Topr= 25ˆ Topr= - 40ˆ Topr= 85ˆ CIN=1.0ЖF (ceram ic), CL=4.7ЖF (ceramic) VI N = 2.0V VI N = 2.9V VI N = 6.0V XC6405 Series (VR:5.0V) XC6405 Series (VR:5.0V) XC6405 Series (VR:0.9V) XC6405 Series (VR:0.9V) ʢ1ʣVR Output Voltage vs. VR Output Current (Continued) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=5.0V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=5.0V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) VROUT=0.9V Output Current: IROUT (mA) Output Voltage: VROUT (V) CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) VROUT=0.9V VIN1=6.0V VIN1=2.9V
0.5 0.7 0.9 1.1 1.3 1.5 Input Voltage VIN (V) Output Voltage VROUTçïVð 0.60 0.80 1.00 Input Voltage VIN (V) Output Voltage VROUT ïVð 2.40 2.45 2.50 2.55 2.60 Input Voltage VIN (V) Output Voltage VROUT ïVð 1.7 1.9 2.1 2.3 2.5 2.7 2.0 2.5 3.0 Input Voltage VIN (V) Output Voltage VROUTçïVð 1.65 1.70 1.75 1.80 1.85 1.90 Input Voltage VIN (V) Output Voltage VROUT ïVð 1.0 1.2 1.4 1.6 1.8 2.0 1.3 1.8 2.3 Input Voltage VIN (V) Output Voltage VROUT ïVð Topr=25ˆ CIN=1.0ЖF (ceramic), CL=4.7ЖF (ceramic) IOUT=0mA 1mA 30mA 100mA Topr=25ˆ CIN=1.0ЖF (ceramic), CL=4.7ЖF (ceramic) IOUT=0mA 1mA 30mA 100mA Topr=25ˆ CIN=1.0ЖF (ceramic), CL=1.0ЖF (ceramic) Topr=25ˆ CIN=1.0ЖF (ceramic), CL=1.0ЖF (ceramic) IOUT=0mA 1mA 30mA 100mA IOUT=0mA 1mA 30mA 100mA IOUT=0mA 1mA 30mA 100mA IOUT=0mA 1mA 30mA 100mA Topr=25ˆ CIN=1.0ЖF (ceramic), CL=1.0ЖF (ceramic) Topr=25ˆ CIN=1.0ЖF (ceramic), CL=1.0ЖF (ceramic) XC6405 Series (VR:0.9V) XC6405 Series (VR:0.9V) XC6405 Series (VR:1.8V) XC6405 Series (VR:1.8V) XC6405 Series (VR:2.5V) XC6405 Series (VR:2.5V) ʢ2ʣVR Output Voltage vs. Input Voltage ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) VROUT=0.9V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) VROUT=0.9V VROUT=1.8V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=1.8V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) VROUT=2.5V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) VROUT=2.5V Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic)
4.85 4.90 4.95 5.00 5.05 5.10 Input Voltage VIN (V) Output Voltage VROUT ïVð 2.85 2.90 2.95 3.00 3.05 3.10 Input Voltage VIN (V) Output Voltage VROUTçïVð 4.2 4.4 4.6 4.8 5.0 5.2 4.5 5.0 5.5 Input Voltage VIN (V) Output Voltage VROUT (V) 2.2 2.4 2.6 2.8 3.0 3.2 2.5 3.0 3.5 Input Voltage VIN (V) Output Voltage VROUT (V) Topr=25ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr=25ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA 1mA 30mA 100mA IOUT=0mA 1mA 30mA 100mA Topr=25ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr=25ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA 1mA 30mA 100mA IOUT=0mA 1mA 30mA 100mA XC6405 Series (VR:3.0V) XC6405 Series (VR:3.0V) XC6405 Series (VR:5.0V)XC6405 Series (VR:5.0V) ʢ2ʣVR Output Voltage vs. Input Voltage (Continued) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VROUT=3.0V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=3.0V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) VROUT=5.0V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=5.0V Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Ta=25ˆ CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic)
ʢ3ʣDropout Voltage vs. VR Output Current 0.6 0.8 1.2 1.4 1.6 0 50 100 150 200 VR Output Current IROUT (m A) Dropout Voltage Vdif (V) 0.2 0.4 0.6 0.8 0 50 100 150 200 VR Output Current IROUT (m A) Dropout Voltage Vdif (V) 0.2 0.4 0.6 0.8 0 50 100 150 200 VR Output Current IROUT (m A) Dropout Voltage Vdif (V) 0.2 0.4 0.6 0.8 0 50 100 150 200 VR Output Current IROUT (m A) Dropout Voltage Vdif ïVð 0.2 0.4 0.6 0.8 0 50 100 150 200 VR Output Current IROUT (m A) Dropout Voltage Vdif (V) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=4.7ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) XC6405 Series (VR:0.9V) XC6405 Series (VR:1.8V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:5.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) -40ˆ CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) VROUT=0.9V Output Current: IROUT (mA) Dropout voltage: Vdif (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=1.8V Output Current: IROUT (mA) Dropout voltage: Vdif (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=2.5V Output Current: IROUT (mA) Dropout voltage: Vdif (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=3.0V Output Current: IROUT (mA) Dropout voltage: Vdif (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=5.0V Output Current: IROUT (mA) Dropout voltage: Vdif (V)
ʢ4ʣSupply Current vs. Input Voltage 100 120 Input Voltage VIN (V) Supply Current ISS ïЖAð 100 120 Input Voltage VIN (V) Supply Current ISS (ЖA) 100 120 Input Voltage VIN (V) Supply Current ISS (ЖA) 100 120 Input Voltage VIN (V) Supply Current ISS ïЖAð 100 120 Input Voltage VIN (V) Supply Current ISS ïЖAð Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=4.7ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) Topr= 85ˆ 25ˆ - 40ˆ CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) XC6405 Series (VR:0.9) XC6403 Series (VR:1.8V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:5.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=2.5V Input Voltage: VIN1 (V) ফඅిྲྀç Iss (ЖA) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=1.8V Input Voltage: VIN1 (V) Supply Current: IDD (μA) Input Voltage: VIN1 (V) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=5.0V Supply Current: IDD (μA) CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) VROUT=0.9V Input Voltage: VIN1 (V) Supply Current: IDD (μA) Supply Current: IDD (μA) CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) VROUT=3.0V Input Voltage: VIN1 (V) Supply Current: IDD (μA)
ʢ5ʣVR Output Voltage vs. Ambient Temperature 0.60 0.70 0.80 0.90 1.00 1.10 - 5 0 - 2 50 2 55 07 5 1 0 0 Operating Temperature Topr (ˆ) Output Voltage VROUT ïVð 4.80 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 - 5 0- 2 5 0 2 5 5 0 7 51 0 0 Output Voltage VROUT ïVð 2.80 2.85 2.90 2.95 3.00 3.05 3.10 3.15 3.20 -50 -25 0 25 50 75 100 Output Voltage VROUT ïVð 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 -50 -25 0 25 50 75 100 Output Voltage VROUT ïVð 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 -50 -25 0 25 50 75 100 Operating Temperature Topr (ˆ) Output Voltage VROUT ïVð VI N =2.0V CIN=1.0ЖF (ceram ic), CL=4.7ЖF (ceramic) IOUT=0mA =30mA =100mA VI N =2.8V CIN=1.0ЖF(ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA =30mA =100mA Operating Temperature Topr (ˆ) VI N =3.5V CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA =30mA =100mA Operating Temperature Topr (ˆ) VI N =4.0V CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA =30mA =100mA VIN=6.0V CIN=1.0ЖF (ceram ic), CL=1.0ЖF (ceramic) IOUT=0mA =30mA =100mA Operating Temperature Topr (ˆ) XC6405 Series (VR:0.9) XC6403 Series (VR:1.8V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:5.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VROUT=0.9V Output Voltage: VROUT (V) VIN1=2.0V CIN1=1.0ЖF(ceramic), CL1=4.7ЖF(ceramic) Ambient Temperature: Ta (℃) VROUT=1.8V Output Voltage: VROUT (V) VIN1=2.8V CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ambient Temperature: Ta (℃) VROUT=2.5V Output Voltage: VROUT (V) VIN1=3.5V CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ambient Temperature: Ta (℃) VROUT=3.0V Output Voltage: VROUT (V) VIN1=4.0V CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ambient Temperature: Ta (℃) VROUT=5.0V Output Voltage: VROUT (V) VIN1=6.0V CIN1=1.0ЖF(ceramic), CL1=1.0ЖF(ceramic) Ambient Temperature: Ta (℃)
ʢ6ʣSupply Current vs. Ambient Temperature ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VROUT=0.9V Supply Current: IDD (μA) Ambient Temperature: Ta (℃) VROUT=1.8V VROUT=2.5V VROUT=3.0V VROUT=5.0V Supply Current: IDD (μA) Ambient Temperature: Ta (℃) Supply Current: IDD (μA) Ambient Temperature: Ta (℃) Supply Current: IDD (μA) Ambient Temperature: Ta (℃) Supply Current: IDD (μA) Ambient Temperature: Ta (℃) VIN1=2.0V VIN1=2.8V VIN1=3.5V VIN1=4.0V VIN1=6.0V
ʢ7ʣRdelay vs. Ambient Temperature ʢ8ʣOutput Noise Density 4.90 5.00 5.10 5.20 5.30 5.40 - 5 0- 2 5 0 2 5 5 0 7 51 0 0 Detect Voltage, Release Voltage VDF,VDR ïVð 3.50 3.55 3.60 3.65 3.70 3.75 3.80 -50 -25 0 25 50 75 100 Detect Voltage, Release Voltage VDF,VDR ïVð 2.60 2.65 2.70 2.75 2.80 2.85 2.90 -50 -25 0 25 50 75 100 Detect Voltage, Release Voltage VDF,VDR ïVð Operating Temperature Topr (OC) Operating Temperature Topr (ˆ) Operating Temperature Topr (ˆ)Operating Temperature Topr (ˆ) 1.90 1.95 2.00 2.05 2.10 2.15 2.20 -50 -25 0 25 50 75 100 Detect Voltage, Release Voltage VDF,VDR (V) VD R VD F VD R VD F Operating Temperature Topr (ˆ) VD R VD F VD R VD F XC6405 Series (VD:2.0V) XC6405 Series (VD:2.7V) XC6405 Series (VD:5.0V)XC6405 Series (VD:3.6V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VDF=2.0V Detect Voltage, Release Voltage: VDF,VDR (V) Ambient Temperature: Ta (℃) VDF=2.7V Detect Voltage, Release Voltage: VDF,VDR (V) Ambient Temperature: Ta (℃) VDF=3.6V Detect Voltage, Release Voltage: VDF,VDR (V) Ambient Temperature: Ta (℃) VDF=5.0V Detect Voltage, Release Voltage: VDF,VDR (V) Ambient Temperature: Ta (℃) 100 200 300 400 500 600 700 800 -50 -25 0 25 50 75 100 Ambient Temperature: Ta(℃) Rdelay (kΩ) 0.01 0.1 0.1 1 10 100 Frequency: (kHz) Output Noise Density (μV/RootHz) VIN=4.0V IOUT=10mA CL=10uF(ｾﾗﾐｯｸ) ʢ9ʣDetect Voltage, Release Voltage vs. Ambient Temperature VIN1=4.0V CIN1=1.0ЖF(ŤŽŶŕŞ), CL1=1.0ЖF(ceramic)
ʢ10ʣVD N-channel Driver Transistor Output Current vs. VDS 01234 VD S (V) Output Current IOUT ïmAð 01234 VD S (V) Output Current IOUT ïmAð 00 . 511 . 522 . 53 VD S (V) Output Current IOUT ïmAð 00 . 511 . 522 . 5 VD S (V) Output Current IOUT ïmAð Topr=25ˆ Topr=25ˆTopr=25ˆ VI N =2.0V VIN=2.0V VIN=2.5V VIN=2.0V VIN=1.5V VIN=1.0V VI N =2.5V VIN=2.0V VIN=1.5V VI N =3.0V VIN=1.5V VI N =2.5V VIN=3.5V VIN=4.5V XC6405 Series (VD:2.0V) XC6405 Series (VD:2.7V) XC6405 Series (VD:5.0V)XC6405 Series (VD:3.6V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VDF=3.6V Output Current: IDOUT (mA) VDS (V) VDF=5.0V Output Current: IDOUT (mA) VDS (V) VDF=2.7V Output Current: IDOUT (mA) VDS (V) VDF=2.0V Output Current: IDOUT (mA) VDS (V) Ta=25ˆ Ta=25ˆ Ta=25ˆ Ta=25ˆ
ʢ11ʣVD N-channel Driver Transistor Output Current vs. Input Voltage 0123456 Input Voltage VIN (V) Output Current IOUT ïmAð 01234 Input Voltage VIN (V) Output Current IOUT ïmAð 01234 Input Voltage VIN (V) Output Voltage IOUTçïmAð 00 . 511 . 522 . 5 Input Voltage VIN (V) Output Current IOUT ïmAð VDS=0.5V 25ˆ -40ˆ 85ˆ 25ˆ VD S=0.5V -40ˆ 85ˆ VD S=0.5V 25ˆ -40ˆ 85ˆ VDS=0.5V 25ˆ -40ˆ 85ˆ XC6405 Series (VD:2.0V) XC6405 Series (VD:2.7V) XC6405 Series (VD:5.0V)XC6405 Series (VD:3.6V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) VDF=3.6V VDF=5.0V VDF=2.7V VDF=2.0V Output Current: IDOUT (mA) Input Voltage: VIN1 (V) Output Current: IDOUT (mA) Input Voltage: VIN1 (V) Output Current: IDOUT (mA) Input Voltage: VIN1 (V) Output Current: IDOUT (mA) Input Voltage: VIN1 (V)
çççççççç ʢ12ʣInput Transient Response ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Input Voltage: VIN1 (V) Input Voltage Input Voltage Input Voltage Input Voltage Time (40Жs /div) Time (40Жs /div) Time (40Жs /div) Time (40Жs /div) Input Voltage: VIN1 (V) Input Voltage: VIN1 (V) Input Voltage: VIN1 (V) Input Voltage: VIN1 (V) Input Voltage: VIN1 (V) Time (40Жs/div) Time (40Жs /div) Output Voltage: VROUT (V) Output Voltage: VROUT (V) Output Voltage: VROUT (V) Output Voltage: VROUT (V) ग़ྗిѹVOUT(V) Output Voltage: VROUT (V) Output Voltage: VROUT (V) Output Voltage Output Voltage Output Voltage ग़ྗిѹ Output Voltage Output Voltage ೖྗిѹ Input Voltage Output Voltage IROUT=1mA, tr=tf=5.0Жs CL1=4.7ЖF(ceramic), Ta=25ˆ VROUT=0.9V IROUT=30mA, tr=tf=5.0Жs CL1=4.7ЖF(ceramic), Ta=25ˆ VROUT=0.9V IROUT=100mA, tr=tf=5.0Жs CL1=4.7ЖF(ceramic), Ta=25ˆ VROUT=0.9V IROUT=1mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V IROUT=100mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V IROUT=30mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V
ʢ12ʣInput Transient Response (Continued) Time (40Жsec/div) Input Voltage VIN ïVð 2.96 2.98 3.00 3.02 3.04 3.06 3.08 Output Voltage VOUT ïVð Time (40Жsec/div) Input Voltage VIN ïVð 2.96 2.98 3.00 3.02 3.04 3.06 3.08 Output Voltage VOUT ïVð Time (40Жsec/div) Input Voltage VIN ïVð 2.96 2.98 3.00 3.02 3.04 3.06 3.08 Output Voltage VOUT ïVð Time (40Жsec/div) Input Voltage VIN ïVð 2.46 2.48 2.50 2.52 2.54 2.56 2.58 Output Voltage VOUT ïVð Time (40 μsec/div) Input Voltage VIN (V) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 Output Voltage VOUT (V) Time (40μsec/div) Input Voltage VIN (V) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 Output Voltage VOUT (V) IOUT=1mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=30mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=100mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=1mA , tr =tf =5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=30mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=100mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage XC6405 Series (VR:2.5V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V)XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:3.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) ೖྗిѹ ग़ྗిѹVOUT(V) ग़ྗిѹVOUT(V) ؒ࣌40Жsec/div) Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=1mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=30mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=100mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=1mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=100mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V IROUT=30mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage
ʢ12ʣInput Transient Response (Continued) Time (40Жsec/div) Input Voltage VIN (V) 4.96 4.98 5.00 5.02 5.04 5.06 5.08 Output Voltage VOUT ïVð Time (40Жsec/div) Input Voltage VIN ïVð 4.96 4.98 5.00 5.02 5.04 5.06 5.08 Output Voltage VOUT ïVð Time (40Жsec/div) Input Voltage VIN ïVð 4.96 4.98 5.00 5.02 5.04 5.06 5.08 Output Voltage VOUT ïVð IOUT=1mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input V oltage Output Voltage IOUT=30mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage IOUT=100mA, tr=tf=5.0Жsec, CL=1.0ЖF (ceramic), Topr=25ˆ Input Voltage Output Voltage XC6405 Series (VR:5.0V) XC6405 Series (VR:5.0V) XC6405 Series (VR:5.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) ೖྗిѹVIN(V) ग़ྗిѹVOUT(V) ग़ྗిѹVOUT(V) ग़ྗిѹVOUT(V) ؒ࣌40Жsec/div) ؒ࣌40Жsec/div) Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=1mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V Time (40Жs /div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=30mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V Time (40Жs/ d i v) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Input Voltage Output Voltage IROUT=100mA, tr=tf=5.0Жs CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V
ʢ13ʣLoad Transient Response ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output Current: IROUT (mA) ೖྗిѹVIN(V) Time (20Жs /div) Output Voltage ೖྗిѹVIN(V) ؒ࣌20Жsec/div) ؒ࣌(40Жsec/div) Output Voltage: VROUT (V) ग़ྗిѹç VOUT (V) ೖྗిѹ Output Current VIN1=2.0V, tr=tf=5.0Жs, Ta=25ˆ CIN1=1.0ЖF(ceramic), C L1=4.7ЖF(ceramic) VROUT=0.9V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=2.0V, tr=tf=5.0Жs, Ta=25ˆ CIN1=1.0ЖF(ceramic), C L1=4.7ЖF(ceramic) VROUT=0.9V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=2.0V, tr=tf=5.0Жsec, Ta=25ˆ CIN1=1.0ЖF(ceramic), C L1=4.7ЖF(ceramic) VROUT=0.9V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=2.8V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=2.8V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=2.8V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=1.8V
ʢ13ʣLoad Transient Response (Continued) 2.30 2.35 2.40 2.45 2.50 2.55 Time (20Жsec/div) Output Voltage VOUT ïVð 100 150 200 250 Output Current IOUT ïmAð 2.30 2.35 2.40 2.45 2.50 2.55 Time (20Жsec/div) Output Voltage VOUT ïVð 100 150 200 250 Output Current IOUT ïmAð 2.80 2.85 2.90 2.95 3.00 3.05 Time (20Жsec/div) Output Voltage VOUT ïVð 100 150 200 250 Output Current IOUT ïmAð 2.80 2.85 2.90 2.95 3.00 3.05 Time (20Жsec/div) Output Voltage VOUT ïVð 100 150 200 250 Output Current IOUT ïmAð 2.80 2.85 2.90 2.95 3.00 3.05 Time (20μsec/div) Output Voltage VOUT (V) 100 150 200 250 Output Current IOUT (mA) 2.30 2.35 2.40 2.45 2.50 2.55 Time (20μsec/div) Output Voltage VOUT (V) 100 150 200 250 Output Current IOUT (mA) VIN=2.5V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage VIN=2.5V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage VIN=2.5V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage VIN=4.0V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage VIN=4.0V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage VIN=4.0V, tr=tf=5.0Жsec CIN=CL=1.0ЖF (ceramic), Topr=25ˆ Output Current Output Voltage XC6405 Series (VR:2.5V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V)XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:3.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=3.5V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=3.5V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=3.5V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=2.5V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=4.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=4.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=4.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=3.0V
ʢ13ʣLoad Transient Response (Continued) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=6.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=6.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V Output Current: IROUT (mA) Time (20Жs /div) Output Voltage Output Voltage: VROUT (V) Output Current VIN1=6.0V, tr=tf=5.0Жs CIN1=CL1=1.0ЖF(ceramic), Ta=25ˆ VROUT=5.0V
ʢ14ʣRipple Rejection Rate ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Ϧοϓϧपç f (kHz) VROUT=0.9V Ϧοϓϧपç f (kHz) VROUT=1.8V Ϧοϓϧपç f (kHz) VROUT=3.0V Ϧοϓϧपç f (kHz) VROUT=2.5V Ϧοϓϧपç f (kHz) VROUT=5.0V 0.01 0.1 1 10 100 リップル周波数 f (kHz) リップル除去率 RR ( VIN=2.5V DC+0.5Vp-PAC IOUT=50mA CL=4.7μF（ｾﾗﾐｯｸ） 0.01 0.1 1 10 100 リップル周波数 f (kHz) リップル除去率 RR ( VIN=2.8V DC+0.5Vp-PAC IOUT=50mA CL=1.0μF（ｾﾗﾐｯｸ） 0.01 0.1 1 10 100 リップル周波数 f (kHz) リップル除去率 RR ( VIN=3.5V DC+0.5Vp-PAC IOUT=50mA CL=1.0μF（ｾﾗﾐｯｸ） 0.01 0.1 1 10 100 リップル周波数 f (kHz) リップル除去率 RR ( VIN=4.0V DC+0.5Vp-PAC IOUT=50mA CL=1.0μF（ｾﾗﾐｯｸ） 0.01 0.1 1 10 100 リップル周波数 f (kHz) リップル除去率 RR ( VIN=5.75V DC+0.5Vp-PAC IOUT=50mA CL=1.0μF（ｾﾗﾐｯｸ） ripple rejection ratio: RR (dB) VIN1=2.25VDC+0.5Vp-pAC IROUT=50mA, C L1=1.0ЖF(ceramic) ripple rejection ratio: RR (dB) VIN1=2.8VDC+1.0Vp-pAC IROUT=50mA, C L1=1.0ЖF(ceramic) VIN1=3.5VDC+1.0Vp-pAC IROUT=50mA, C L1=1.0ЖF(ceramic) VIN1=4.0VDC+1.0Vp-pAC IROUT=50mA, C L1=1.0ЖF(ceramic) ripple rejection ratio: RR (dB) ripple rejection ratio: RR (dB) ripple rejection ratio: RR (dB) VIN1=5.75VDC+0.5Vp-pAC IROUT=50mA, C L1=1.0ЖF(ceramic) Ripple Frequency: f (kHz) Ripple Frequency: f (kHz) Ripple Frequency: f (kHz) Ripple Frequency: f (kHz) Ripple Frequency: f (kHz)
ʢ15ʣInput Voltage Rising Response Time ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=1mA, tr= 5.0Жs VIN1=0ˠ2.0V, CL1=4.7ЖF(ceramic) VROUT=0.9V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=30mA, tr= 5.0Жs VIN1=0ˠ2.0V, CL1=4.7ЖF(ceramic) VROUT=0.9V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=100mA, tr= 5.0Жs VIN1=0ˠ2.0V, CL1=4.7ЖF(ceramic) VROUT=0.9V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=1mA, tr= 5.0Жs VIN1=0ˠ2.8V, CL1=1.0ЖF(ceramic) VROUT=1.8V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=100mA, tr= 5.0Жs VIN1=0ˠ2.8V, CL1=1.0ЖF(ceramic) VROUT=1.8V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=30mA, tr= 5.0Жs VIN1=0ˠ2.8V, CL1=1.0ЖF(ceramic) VROUT=1.8V
ʢ15ʣInput Voltage Rising Response Time (Continued) Time (20Жsec/div) Input Voltage VIN (V) Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN (V) Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN (V) Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN ïVð Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN ïVð Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN (V) Output Voltage VOUT ïVð IOUT=1mA, tr=5.0Жsec VI N =0ˠ3.5V, CL=4.7ЖF (ceramic) Output Voltage Input Voltage IOUT=30mA, tr=5.0Жsec VI N =0ˠ3.5V, CL=4.7ЖF (ceramic) Output Voltage Input V oltage IOUT=100mA, tr=5.0Жsec VI N =0ˠ3.5V, CL=4.7ЖF (ceramic) Output Voltage Input Voltage IOUT=1mA, tr=5.0Жsec VI N =0ˠ4.0V, CL=1.0ЖF (ceramic) Output Voltage Input V oltage IOUT=30mA, tr=5.0Жsec VI N =0ˠ4.0V, CL=1.0ЖF (ceramic) Output Voltage Input Voltage IOUT=100mA, tr=5.0Жsec VI N =0ˠ4.0V, CL=1.0ЖF (ceramic) Output Voltage Input Voltage XC6405 Series (VR:2.5V) XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V)XC6405 Series (VR:2.5V) XC6405 Series (VR:3.0V) XC6405 Series (VR:3.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=1mA, tr= 5.0Жs VIN1=0ˠ3.5V, CL1=1.0ЖF(ceramic) VROUT=2.5V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=30mA, tr= 5.0Жs VIN1=0ˠ3.5V, CL1=1.0ЖF(ceramic) VROUT=2.5V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=100mA, tr= 5.0Жs VIN1=0ˠ3.5V, CL1=1.0ЖF(ceramic) VROUT=2.5V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=1mA, tr= 5.0Жs VIN1=0ˠ4.0V, CL1=1.0ЖF(ceramic) VROUT=3.0V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=100mA, tr= 5.0Жs VIN1=0ˠ4.0V, CL1=1.0ЖF(ceramic) VROUT=3.0V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=30mA, tr= 5.0Жs VIN1=0ˠ4.0V, CL1=1.0ЖF(ceramic) VROUT=3.0V
ʢ15ʣInput Voltage Rising Response Time (Continued) Time (20Жsec/div) Input Voltage VIN ïVð Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN ïVð Output Voltage VOUT ïVð Time (20Жsec/div) Input Voltage VIN ïVð Output Voltage VOUT ïVð IOUT=1mA, tr=5.0Жsec VI N =0ˠ6.0V, CL=1.0ЖF (ceramic) Output Voltage Input Voltage IOUT=30mA, tr=5.0Жsec VI N =0ˠ6.0V, CL=1.0ЖF (ceramic) Output Voltage Input Voltage IOUT=100mA, tr=5.0Жsec VI N =0ˠ6.0V, CL=1.0ЖF (ceramic) Output Voltage Input Voltage XC6405 Series (VR:5.0V) XC6405 Series (VR:5.0V) XC6405 Series (VR:5.0V) ˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=1mA, tr= 5.0Жs VIN1=0ˠ6.0V, CL1=1.0ЖF(ceramic) VROUT=5.0V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage VROUT=5.0V Time (20Жs/div) Input Voltage: VIN1 (V) Output Voltage: VROUT (V) Inpit Voltage Output Voltage IROUT=100mA, tr= 5.0Жs VIN1=0ˠ6.0V, CL1=1.0ЖF(ceramic) VROUT=5.0V IROUT=30mA, tr= 5.0Жs VIN1=0ˠ6.0V, CL1=1.0ЖF(ceramic)
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) ˔2ch:DC/DC Convertor Block (1) Efficiency vs. Output Current çççç (2) Output Voltage vs. Output Current (3) Ripple Voltage vs. Output Current VDCOUT=1.8V, fOSC=1.2MHz 100 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Efficency:EFFI (%) PWM/PFM A utomatic Sw itc hing Contr ol PWM Control VIN2= 4.2V 3.6V VIN2= 4.2V 3.6V L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz 100 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Efficency: EFFI (%) PWM/PFM A utomatic Sw itc hing Contr ol PWM Control VIN2= 4.2V 3.6V VIN2= 4.2V 3.6V L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=1.2MHz 1.5 1.6 1.7 1.8 1.9 2.0 2.1 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Output Voltage: VDCOUT (V) PWM/PFM A utomatic Sw itc hing Contr ol VIN2＝4.2V,3.6V PWM Control L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz 1.5 1.6 1.7 1.8 1.9 2.0 2.1 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Output Voltage: VDCOUT (V) PWM/PFM A utomatic Sw itc hing Contr ol VIN2＝4.2V,3.6V PWM Control L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz 100 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Ripple Voltage: Vr (mV) PWM/PFM A utomatic Sw itching Control VIN2＝4.2V 3.6V PWM Control VIN2＝4.2V,3.6V L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=1.2MHz 100 0.1 1 10 100 1000 Output Current: I OUT 2 (m A) Ripple Voltage: Vr (mV) PWM Control VIN2＝4.2V,3.6V PWM/PFM A utomatic Sw itching Control VIN2＝4.2V 3.6V L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (4) Oscillation Frequency vs. Ambient Temperature (5) Supply Current vs. Ambient Temperature (6) Output Voltage vs. Ambient Temperatureçççççççççççççççç (7) UVLO Voltage vs. Ambient Temperature VDCOUT=1.8V, fOSC=1.2MHz 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) VIN2=3.6V Oscillation Frequency: fOSC (MHz) L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) VIN2=3.6V Oscillation Frequency: fOSC (MHz) L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=1.2MHz -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Supply Current: IDD (μA) VIN2=6.0V VIN2=4.0V VDCOUT=1.8V, fOSC=3.0MHz -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Supply Current: IDD (μA) VIN2=6.0VVIN2=4.0V VDCOUT=1.8V, fOSC=3.0MHz 1.5 1.6 1.7 1.8 1.9 2.0 2.1 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Output Voltage: VDCOUT (V) VIN2=3.6V VDCOUT=1.8V, fOSC=3.0MHz 0.0 0.3 0.6 0.9 1.2 1.5 1.8 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) UVLO Voltage: UVLO (V) EN2=VIN2
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (8) EN "H" Voltage vs. Ambient Temperatureççççççççç ç (9) EN" L" Voltage vs. Ambient Temperature (10) Soft Start Time vs. Ambient Temperature (11) "P-channel/N-channel" Driver on Resistance vs. Input Voltage VDCOUT=1.8V, fOSC=3.0MHz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) EN "H" Voltage: VENH (V) VIN2=5.0V VIN2=3.6V VDCOUT=1.8V, fOSC=3.0MHz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) EN "L" Voltage: VENL (V) VIN2=5.0V VIN2=3.6V VDCOUT=1.8V, fOSC=1.2MHz -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Soft Start Time: tSS (ms) VIN2=3.6V L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Soft Start Time: tSS (ms) VIN2=3.6V L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF VDCOUT=1.8V, fOSC=3.0MHz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0123456 Input Voltage: VIN2 (V) Pch on Resistance Nch on Resistance Lx SW ON Resistance: RLxH,RLxL (Ω)
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (12) XCM524xC/ XCM524xD Series Rise Wave Form (13) XCM524xC/ XCM524xD Series Soft-Start Time vs. Ambient Temperature (14) XCM524xC/ XCM524xD Series CL Discharge Resistance vs. Ambient Temperature VDCOUT=3.3V, fOSC=3.0MHz 100 200 300 400 500 600 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) CL Discharge Resistance: Rdischg( Ω) VI N 2=6.0V VI N 2=4.0V VDCOUT=1.2V, fOSC=1.2MHz 100 200 300 400 500 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Soft Start Time: tSS (μs) VIN2=5.0V IOUT 2=1.0mA L=4.7μH(NR4018) CIN 2=4.7μF CL2=10μF VDCOUT=3.3V, fOSC=3.0MHz 100 200 300 400 500 -50 -25 0 25 50 75 100 Ambient Temperature: Ta (℃) Soft Start Time: tSS (μs) VIN2=5.0V IOUT 2=1.0mA L=1.5μH(NR3015) CIN 2=4.7μF CL2=10μF 100μs/div VDCOUT=1.2V, fOSC=1.2MHz L=4.7μH(NR4018) CIN2=4.7μF CL2=10μF EN2:0.0V˰1.0V VDCOUT:0.5V/div VIN2=5.0V IOUT2=1.0mA VDCOUT=3.3V, fOSC=3.0MHz L=1.5μH(NR3015) CIN2=4.7μF CL2=10μF 100μs/div EN2:0.0V˰1.0V VDCOUT:1.0V/div VIN2=5.0V IOUT2=1.0mA
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (15) Load Transient Response VDCOUT=1.2V, fOSC=1.2MHz(PWM/PFM Automatic Switching Control) L=4.7ЖH(NR4018), CIN2=4.7ЖF(ceramic), CL2=10ЖF(ceramic), Ta=25ˆ VIN2=3.6V, EN2=VIN2 IOUT2=1mA ˠ 100mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=1mA ˠ 300mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=100mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div IOUT2=300mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (15) Load Transient Response (Continued) VDCOUT=1.2V, fOSC=1.2MHz (PWM Control) L=4.7ЖH(NR4018), CIN2=4.7ЖF(ceramic), CL2=10ЖF(ceramic), Ta=25ˆ VIN2=3.6V, EN2=VIN2 IOUT2=1mA ˠ 100mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=1mA ˠ 300mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=100mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div IOUT2=300mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (15) Load Transient Response (Continued) VDCOUT=1.8V, fOSC=3.0MHz (PWM/PFM Automatic Switching Control) L=1.5ЖH(NR3015), CIN2=4.7ЖF(ceramic), CL2=10ЖF(ceramic),Ta=25ˆ VIN2=3.6V, EN=VIN2 IOUT2=1mA ˠ 100mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=1mA ˠ 300mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=100mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div IOUT2=300mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (15) Load Transient Response (Continued) VDCOUT=1.8V, fOSC=3.0MHz (PWM Control) L=1.5ЖH(NR3015), CIN2=4.7ЖF(ceramic), CL2=10ЖF(ceramic), Ta=25ˆ VIN2=3.6V, EN2=VIN2 IOUT2=100mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div IOUT2=300mA ˠ 1mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 200μs/div IOUT2=1mA ˠ 300mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div IOUT2=1mA ˠ 100mA 1ch : IOUT2 2ch: VDCOUT (50mV/div) 50μs/div
˔USP-12B01 ˔USP-12B01 Reference Pattern Layoutçççççççççççççç ˔USP-12B01 Reference Metal Mask Design ˙PACKAGING INFORMATION 0. 2 50. 2 5 0. 6 50. 6 5 0. 9 0 1. 3 5 0. 9 0 1. 3 5 0. 4 5 0. 4 5 1. 3 0 1. 6 0 0. 1 0 0. 1 0 1. 3 0 1. 6 0 0. 3 0 0 .0250. 0 2 5 0. 2 5 0 .025 0. 0 2 5 0. 5 5 0. 9 5 0. 2 5 0. 1 5 0. 6 5 1. 0 5 0. 2 0 0. 2 00. 5 0 0. 6 0 1. 1 0 1. 5 5 0. 6 0 1. 1 0 1. 5 5 0. 5 5 0. 9 5 1. 3 0 0. 5 5 0. 9 5 1. 3 0 0. 2 50. 2 5 0. 3 5 0. 3 5 0. 5 5 0. 9 5 0. 2 5 0. 1 5 0. 6 5 1. 0 5 0. 1 50. 1 5 0. 4 0 1.2±0.1 1.2±0.1 0.7±0.050.7±0.05 0.4±0.1 123456 78912 11 10 2.3±0.08 2.8±0.08 MAX0.6 (0.15) (0.25) 0.25± 0.05 0.2± 0.05 0.2± 0.05 0.2± 0.05 0.2± 0.05 0.2± 0.05
˙PACKAGING INFORMATION (Continued) ˔ç USP-12B01 Power Dissipation Power dissipation data for the USP-12B01 is shown in this page. The value of power dissipation varies with the mount board conditions. Please use this data as one of reference data taken in the described condition. 1. Measurement Condit ion (Reference data) Condition: Mount on a board Ambient: Natural convection Soldering: Lead (Pb) free Board: Dimensions 40 x 40 mm (1600 mm in one side) st Layer: Land and a wiring pattern nd Layer: Connecting to approximate 50% of the 1 st heat sink rd Layer: Connecting to approximate 50% of the 2 nd heat sink th Layer: Noting Material: Glass Epoxy (FR-4) Thickness: 1.6 mm Through-hole: 2 x 0.8 Diameter (each TAB needs one through-hole) 2. Power Dissipation vs. Ambient Temperature ˔Only 1ch heating, Board Mount (Tj max = 125ˆ) ˔Both 2ch heating same time, Board Mount (Tj max = 125ˆ) Ambient Temperature（℃） Power Dissipation Pd（mW） Thermal Resistance (℃/W) 25 800 85 320 125.00 Ambient Temperature（℃） Power Dissipation Pd（mW） Thermal Resistance (℃/W) 25 600 85 240 166.67 Evaluation Board (Unit: mm) Pd-Ta特性グラフ 200 400 600 800 1000 25 45 65 85 105 125 周囲温度Ta（℃） 許容損失Pd（mW） Pd vs. Ta Ambient Temperature: Ta (ˆ) Power Dissipation: Pd (mW) Pd-Ta特性グラフ 200 400 600 800 1000 25 45 65 85 105 125 周囲温度Ta（℃） 許容損失Pd（mW） Pd vs. Ta Ambient Temperature: Ta (ˆ) Power Dissipation: Pd (mW)
- The products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. Consult us, or our representatives before use, to confirm that the information in this datasheet is up to date. 2. We assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. The products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. Please use the products listed in this datasheet within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this dat asheet may be copied or reproduced without the prior permission of TOREX SEMICONDUCTOR LTD.