R5220X NISSHINBO | Alldatasheet

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Technical content

PWM Step-down DC/DC Converter with switch function NO.EA-121-120113 OUTLINE The R5220x Series are CMOS-based PWM step-down DC /DC Converters with synchronous rectifier, low supply current and LDO mode. DC/DC converter of the R5220x consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, protection circuits, a protection against miss operation under low voltage (UVLO), PWM-DC to DC converter / LDO alternative circuit, a chip enable circuit, and a driver transistor. A high efficiency step-down DC/DC converter can be easily comp osed of this IC with only a few kinds of external components, or an inductor and capacitors. LDO of the R5220x consists of a vortage reference unit, an error amplifier, resistors for voltage setting, output current limit circuit, a driver transistor, and so on. The output voltage is fixed internally in the R5220x. The output voltage of the DC/DC converter and the LDO can be set independently. PWM step-down DC/DC converter / LDO alternative circuit is active with Mode Pin of the R5220x Series. Thus, when the load current is small, the operation can be sw itching into the LDO operation from PWM operation by the logic of MODE pin and the consumption current of the IC itself will be small at light load current. As protection circuits, the current limit circuit which limits peak curren t of Lx at each clock cycle, and the latch type protection circuit which works if the term of the over-current condition keeps on a certain time in PWM mode. Latch-type protection circuit works to latch an internal driver with keeping it disable. To release the protection, after disable this IC with a chip enable circuit, enable it again, or rest art this IC with power-on or make the supply voltage at UVLO detector threshold level or lower than UVLO.

FEATURES

(For other voltages, please refer to MARK INFORMATIONS.)

  • Built-in fold-back protection circuit (DC/DC, VR)
  • Ceramic Capacitor is recommended.

APPLICATIONS

  • Power source for portable equipment such as DSC, DVC, and communication equipment. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

MODE∗1 CE GND OSC Current Limit *1) R5220xxxxA: DC/DC mode: Mode pi n= "H", VR mode: Mode pin= "L" R5220xxxxB: DC/DC mode: Mode pin= "L", VR mode: Mode pin= "H" SELECTION GUIDE In the R5220x Series, the output voltage, the version and the pin polalities for the ICs can be selected at the user's request. Product Name package Quantity per Reel Pb Free Halogen Free R5220Kxx∗$-TR DFN(PL)2514-6 5,000 pcs ○ ○ R5220Dxx∗$-TR-FE SON-6 3,000 pcs ○ ○ xx： Output Voltage (V OUT) or serial number. The output voltage can be designed in the range from 1.0V(10) to 3.3V(33) in 0.1V steps. ( If selected the custum-made product)The output voltage can be designed by Serial numbers. Please refer to the attached Mark Informations. ∗ ：（1）Standard (DC/DC output voltage = LDO output voltage) （2）Custom-made (DC/DC output voltage ≠ LDO output voltage) $ ：Designation of chip enable and Mode pin polarities （A）Mode pin; "H"=DC/DC converter mode, "L"=LDO Mode （B）Mode pin; "L"=DC/DC converter mode, "H"=LDO Mode ÿ R5220D (SON-6) is the discontinued product as of March 2019.

SON-6 DFN(PL)2514-6 Top View Bottom View 6 5 4 4 5 6 1 2 3 3 2 1 ∗ ∗ T o p V i e w B o t t o m V i e w 6 54 123 4 5 6 3 2 1 PIN DESCRIPTIONS Pin No Symbol Description

1 Lx L X Pin Voltage Supply Pin

2 GND Ground Pin

3 MODE Mode changer Pin

(Refer to the Selection Guide)

4 CE Chip Enable Pin (active with "H")

5 VOUT Output Pin

6 VIN Voltage Supply Pin

∗1) Tab is GND level. (They are connected to the reverse side of this IC.) The tab is better to be connected to the GND, but leaving it open is also acce ptable. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

VIN VIN Supply Voltage 6.5 V VLX LX Pin Voltage −0.3 to VIN+0.3 V VCE CE Pin Input Voltage −0.3 to 6.5 V VMODE MODE Pin Input Voltage −0.3 to 6.5 V VOUT VOUT Pin Voltage −0.3 to VIN+0.3 V ILX LX Pin Output Current 600 mA IOUT VOUT Pin Output Current 200 mA Power Dissipation (SON-6)* 500 PD Power Dissipation (DFN(PL)2514-6)* 730 mW Topt Operating Temperature Range −40 to 85 °C Tstg Storage Temperature Range −55 to 125 °C *) For Power Dissipation, please refer to PACKAGE INFORMATION. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

ELECTRICAL CHARACTERISTICS

  • R5220xxxxA Topt =25°C Symbol Item Conditions Min. Typ. Max. Unit VIN Input Voltage 2.8 5.5 V ISS1 Supply Current 1 (Standby mode) VIN=VOUT1+1.0V, VCE=GND, VMODE=GND or VIN VOUT1:DC/DC Set VOUT 0.1 1.0 μA ISS2 Supply Current 2 (Power Save mode) VIN=VCE=VOUT2+1.0V, VMODE=GND VOUT2:VR Set VOUT, IOUT=0mA 5 10 μA ISS3 Supply Current 3 VIN=VCE=VMODE=3.6V 350 450 μA DC/DC Part Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit VOUT1 > = 1.5 ×0.98 ×1.02VOUT1 Output Voltage VIN=3.6V IOUT=50mA VOUT1 < 1.5 −0.03 +0.03 V fosc Oscillator Frequency VIN=3.6V 0.96 1.20 1.44 MHz RONP ON Resistance of Pch Transistor VIN=3.6V, ILX=−100mA 0.5 Ω RONN ON Resistance of Nch Transistor VIN=3.6V, ILX=−100mA 0.5 Ω ILXLEAK Lx Leakage Current VIN=5.5V, VCE=0V, LX=5.5V/0V −1.0 1.0 μA ΔVOUT/ ΔTopt Output Voltage Temperature Coefficient −40°C < = Topt < = 85°C ±150 ppm/°C Maxduty Oscillator Maximum Duty Cycle VOUT=0V 100 % ILXlim Lx Current Limit VIN=3.6V 500 800 mA Tprot Protection Delay Circuit VIN=3.6V 1.0 3.0 7.0 ms VUVLO1 UVLO Threshold Voltage VIN=VCE=VMODE, VOUT=0V 2.00 2.35 2.75 V VUVLO2 UVLO Released Voltage VIN=VCE=VMODE, VOUT=0V 2.05 2.45 2.80 V VMODEH MODE "H" Input Voltage 1.0 V VMODEL MODE "L" Input Voltage 0 0.3 V VR Part Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit VOUT2 > = 1.5 ×0.98 ×1.02VOUT2 Output Voltage VIN=VOUT2+1.0V IOUT=10mA VOUT2 < 1.5 −0.03 +0.03 V IOUT Output Current VIN=VOUT2+1.0V 50 mA VOUT2 < 2.3 15 40 2.3 < = VOUT2 < 3.0 25 50 ΔVOUT2/ ΔIOUT Load Regulation VIN=VOUT2+1.0V 10μA < = IOUT < = 25mA VOUT2 > = 3.0 35 65 mV VOUT2 < 1.8 0.7 VDIF Dropout Voltage IOUT=50mA VOUT2 > = 1.8 0.3 V IOUT=25mA VOUT2 < 2.3 ΔVOUT2/ ΔVIN Line Regulation VOUT2+0.5V < = VIN < = 5.5V IOUT=25mA VOUT2 > = 2.3 0.2 %/V RR Ripple Rejection Refer to Typical Characteristics dB ΔVOUT/ ΔTopt Output Voltage Temperature Coefficient IOUT=30mA, −40°C < = Topt < = 85°C ±100 ppm/°C Ilim Short Current Limit VOUT=0V 60 mA IPDC CE pull-down current 0.12 0.40 0.70 μA VCEH CE "H" Input Voltage 1.0 V VCEL CE "L" Input Voltage 0 0.3 V ÿ R5220D (SON-6) is the discontinued product as of March 2019.
  • R5220xxxxB Topt =25°C Symbol Item Conditions Min. Typ. Max. Unit VIN Input Voltage 2.8 5.5 V ISS1 Supply Current 1 (Standby mode) VIN=VOUT1+1.0V, VCE=GND, VMODE=GND or VIN VOUT1:DC/DC Set VOUT 0.1 1.0 μA ISS2 Supply Current 2 (Power Save mode) VIN=VCE=VMODE=VOUT2+1.0V, VOUT2:VR Set VOUT, IOUT=0mA 5 10 μA ISS3 Supply Current 3 VIN=VCE=3.6V, VMODE=GND 350 450 μA DC/DC Part Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit VOUT1 > = 1.5 ×0.98 ×1.02VOUT1 Output Voltage VIN=3.6V IOUT=50mA VOUT1<1.5 −0.03 +0.03 V fosc Oscillator Frequency VIN=VSET1+1.5V 0.96 1.20 1.44 MHz RONP ON Resistance of Pch Transistor VIN=3.6V, ILX=−100mA 0.5 Ω RONN ON Resistance of Nch Transistor VIN=3.6V, ILX=−100mA 0.5 Ω ILXLEAK Lx Leakage Current VIN=5.5V, VCE=0V, LX=5.5V/0V −1.0 1.0 μA ΔVOUT/ ΔTopt Output Voltage Temperature Coefficient −40°C < = Topt < = 85°C ±150 ppm/°C Maxduty Oscillator Maximum Duty Cycle VOUT=0V 100 % ILXlim Lx Current Limit VIN=3.6V 500 800 mA Tprot Protection Delay Circuit VIN=3.6V 1.0 3.0 7.0 ms VUVLO1 UVLO Threshold Voltage VCE=VIN, VMODE=GND, VOUT=0V 2.00 2.35 2.75 V VUVLO2 UVLO Released Voltage VCE=VIN, VMODE=GND, VOUT=0V 2.05 2.45 2.80 V VMODEH MODE "H" Input Voltage 1.0 V VMODEL MODE "L" Input Voltage 0 0.3 V VR Part Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit VOUT2 > = 1.5 ×0.98 ×1.02VOUT2 Output Voltage VIN=VOUT2+1.0V IOUT=10mA VOUT2<1.5 −0.03 +0.03 V IOUT Output Current VIN=VOUT2+1.0V 50 mA VOUT2<2.3 15 40 2.3 < = VOUT2<3.0 25 50 ΔVOUT2/ ΔIOUT Load Regulation VIN=VOUT2+1.0V 10μA < = IOUT < = 25mA VOUT2 > = 3.0 35 65 mV VOUT2<1.8V 0.7VDIF Dropout Voltage IOUT=50mA VOUT2 > = 1.8V 0.3 V IOUT=25mA VOUT2<2.3V ΔVOUT2/ ΔVIN Line Regulation VOUT2+0.5V < = VIN < = 5.5V IOUT=25mA VOUT2 > = 2.3V 0.2 %/V RR Ripple Rejection Refer to Typical Characteristics dB ΔVOUT/ ΔTopt Output Voltage Temperature Coefficient IOUT=30mA, −40°C < = Topt < = 85°C ±100 ppm/°C Ilim Short Current Limit VOUT=0V 60 mA IPDC CE pull-down current 0.12 0.40 0.70 μA VCEH CE "H" Input Voltage 1.0 V VCEL CE "L" Input Voltage 0 0.3 V ÿ R5220D (SON-6) is the discontinued product as of March 2019.

COUT 10μF Lx GND MODE CE VIN VIN CIN 10μF L 4.7μH Load V OUT R5220x Series Parts Recommendation CIN 10μF Ceramic Capacitor C2012JB0J106K (TDK) COUT 10μF Ceramic Capacitor C2012JB0J106K (TDK) L 4.7μH VLP5610T-4R7MR90 (TDK) External Components

  • Set external components such as an inductor, C IN, C OUT as close as possible to the IC, in particular, minimize the wiring to VIN pin and GND pin. If VDD line or GND line’s impedance is high, the internal voltage level of the IC may fluctuate and the oper ation may be unstable. Make GND line and V DD line sufficient. Through the VDD line, the GND line, the inductor, Lx pin, and V OUT line, a large current caused by switching may flow, therefore, those lines should be sufficient and avoid the cross talk with other sensitive lines. Use the individual line from the VOUT pin of the IC for the inductor and the capacitor and load.
  • Us e a low ESR ceramic capacitor C OUT/CIN with a capacity of 10μF or more.
  • Select an in ductor with an inductance range from 4.7μ H to 10 μH. The internal phase compensation is secured with these inductance values and C OUT value. Choose the inductor with a low DC resistance and enough permissible current and hard to reach magnetic saturation. In terms of inductance value, choose the appropriate value with considering the conditions of the input voltage range and the output voltage, and load current. If the inductance value is too small and t he load current is large, t he peak current of Lx may reach the Lx current limit, and the protection against over-current may work.
  • The protectio n circuit against over-current is affected by the self-heating and the heat radiation environment. Therefore evaluate under the considerable environment of the application. The performance of power source circuits using these ICs extrem ely depends upon the peripheral circuits. Pay attention in the selection of the peripheral circuits. In particular, design the peripheral circuits in a way that the values such as voltage, current, and power of each component, PCB patterns and the IC do not exceed their respected rated values. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

OPERATION of step-down DC/DC converter and Output Current The step-down DC/DC converter charges energy in the inductor when LX transistor is ON, and discharges the energy from the inductor when L X transistor is OFF and controls with less energy loss, so that a lower output voltage than the input voltage is obtained. The operation will be explained with reference to the following diagrams: <Basic Circuits> <Current through L> Pch Tr L Nch Tr VIN VOUT CL GND IOUT T=1/fosc ton toff topen ILmin ILmax IL t Step 1: P-channel Tr. turns on and current IL ( =i1) flows, and energy is charged into CL. At this moment, IL increases from ILmin (=0) to reach ILmax in proportion to the on-time period (ton) of P-channel Tr. Step 2: When P-channel Tr. turns off, Synchronous rectifier N-channel Tr. turns on in order that L maintains IL at ILmax, and current IL (=i2) flows. Step 3: IL ( =i2) decreases gradually and reaches IL =ILmin=0 after a time period of topen, and N-channel Tr. Turns off. Provided that in the continuous mode, next cycle starts before IL becomes to 0 because toff time is not enough. In this case, IL value increases from this ILmin (>0). In the case of PWM control system, the output voltage is maintained by controlling the on-time period (ton), with the oscillator frequency (fosc) being maintained constant. The maximum value (ILmax) and the minimum value (ILmin) of the current flowing through the inductor are the same as those when P-channel Tr. turns on and off. The difference between ILmax and ILmin, which is represented by ΔI; wherein, T = 1 / fosc = ton + toff duty (%) = ton / T × 100 = ton × fosc × 100 topen < = toff In Equation 1, VOUT × topen / L and (VIN − VOUT) × ton / L respectively show the change of the current at "ON", and the change of the current at "OFF". ÿ R5220D (SON-6) is the discontinued product as of March 2019.

OUTPUT CURRENT AND SELECTION OF EXTERNAL COMPONENTS When P-channel Tr. of LX is ON: (Wherein, Ripple Current P-P value is described as IRP, ON resistance of P-channel Tr. and N-channel Tr. of L X are respectively described as RONP and RONN, and the DC resistor of the inductor is described as RL.) When P-channel Tr. of LX is "OFF" (N-channel Tr. is "ON"): Put Equation 3 to Equation 2 and solve for ON duty of P-channel transistor, ton / (toff + ton) = DON, Ripple Current is as follows; wherein, peak current that flows through L, and LX Tr. is as follows; Consider ILmax, condition of input and output and select external components. œ The above explanation is directed to the calculation in an ideal case in continuous mode. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

1) IC start-up The timing chart as shown in the next describes the operation starting the IC is enabled with CE. When the CE pin voltage becomes higher than the threshold voltage, t he IC’s operations starts. At first, only the voltage regulator (VR) starts. The threshold level of the CE pin is between CE “H” input voltage and CE “L” input voltage. After starting the operation, the output capacitor (C OUT) is charged with the output current of the VR, and the output level becomes the set VR output voltage. At this moment, the output of Lx is “off”, (“Hi-Z”), the pin voltage, VLX=VOUT through the external inductor L. Secondly, the Mode pin voltage is higher than the threshold voltage, internal operation of DC/DC starts. The threshold level is between Mode “H” input voltage and Mode “L” input voltage. The soft-start circuit inside the DC/DC converter’s operation is as follows: (Case 1) DC/DC output voltage < VR output voltage After the soft-start time, while the output voltage level is down from the VR output voltage to DC/DC output voltage, the circuit is waiting for the start of DC/DC op eration. When the output voltage reaches so set DC/DC output voltage level, the actual DC/DC operation starts. (Case 2) DC/DC output voltage> VR output voltage The soft-start circuit of DC/DC converter makes the voltage reference unit of the IC rise gradually and be constant. After the voltage reference unit reaches the constant level which the output voltage of DC/DC converter can balance becomes the output voltage of VR, the set output voltage of DC/DC converter may be realized. Therefore, the soft-start time means the time range of starting to the time when the voltage reference unit reaches the constant level, and the soft-start time is different from turning on speed in some cases. The operation starting time depends on the ability of the power supply, the load current, the inductance value, the capacitance value, and the voltage difference between the set VR output and the set DC/DC output. If CE and Mode are on at once, the same operation as above is happened except the VR start-up and Soft-start operation start at the same time. If Mode signal is forced earlier than CE signal, this IC is stand-by until CE signal comes. Therefore when the CE signal is set, the IC operation starts as above.

  • VOUT voltage rising speed at start-up with power supply is affected by the next conditions: 1.The turning on speed of VIN voltage limited by the power supply to the IC and the input capacitor CIN. 2.The output capacitor, COUT value and load current.
  • DC/DC operation starting time 1.If the VR output > = DC/DC output, the operation starting time of the DC/DC converter is approximately equal to the next formula. TDC/DC_ACT = TSS + (VOUT_VR − VOUT_DC/DC + 15mV) × COUT / (load current at mode change + 1μA) TSS: Soft-start time VOUT_VR: VR output voltage VOUT_DC/DC: DC/DC Output Voltage *1μA is the supply current of the IC itself for the output. 2.If the VR output < DC/DC output, the operati on starting time is the soft-start time + starting operation time which depends on the power supply, the load current, and the external components. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

IC DC/DC Voltage Reference Unit Soft start time A.VR Output=DC/DC Output voltage Effect from Power Supply, Load Current, Extemal Components B.VR voltage > DC/DC Output C. VR voltage < DC/DC voltage VOUT Lx voltage VOUT VOUT Lx voltage Lx voltage MODE pin input signal VMODEH VMODEL DC/DC does not operate if VR output is larger than DC/DC DC/DC Operating DC/DC Operation DC/DC Operation If CE pin input signal is forced earlier than the supply voltage, the voltage difference between the input and the output which is according to the input voltage to VIN, is maintained and the VOUT is rising up. ÿ R5220D (SON-6) is the discontinued product as of March 2019.

A Lx GND MODE V V Lx GND MODE VIN VOUT CE OSCILLOSCOPE Lx GND MODE V V Lx GND MODE VIN VOUT CE Supply Current 1,2,3 Output Voltage(DC/DC) OSCILLOSCOPE Lx GND MODE V V Lx GND MODE VIN VOUT CE OSCILLOSCOPE Lx GND MODE V V Lx GND MODE VIN VOUT CE Oscillator Frequency Soft-start Time A Lx GND MODE V V Lx GND MODE VIN VOUT CE OSCILLOSCOPE Lx GND MODE V V Lx GND MODE VIN VOUT CE Lx Leakage Current Lx Current Limit, Output Delay for Protection Lx Pch transistor ON resistance Nch transistor ON resistance ÿ R5220D (SON-6) is the discontinued product as of March 2019.

V V Lx GND MODE VIN VOUT CE OSCILLOSCOPE A Lx GND MODE V V Lx GND MODE VIN VOUT CE UVLO Detector Threshold UVLO Release Voltage MODEInput Voltage ”H”,”L” Input Current V Lx GND MODE V V Lx GND MODE VIN VOUT CE Network Analyzer Lx GND MODE V V Lx GND MODE VIN VOUT CE Output Voltage (VR), Load Regulation (J) RippleRejection Line Regulation, Dropout Voltage A Lx GND MODE V V Lx GND MODE VIN VOUT CE A V Lx GND MODE V V Lx GND MODE VIN VOUT CE Short Current Limit CE =”H”/”L” Input Voltage/ Input Current ÿ R5220D (SON-6) is the discontinued product as of March 2019.

1) DC/DC Converter 1-1) DC/DC Output Voltage vs. Output Current 1-2) DC/DC Output Voltage vs. Input Voltage R5220x181A R5220x181A 2.8V 3.6V 5.5V 1.76 1.77 1.84 1.82 1.83 1.79 1.80 1.78 1.81 0 100 300 200 400 Output Current(mA) Output Voltage(V) 1mA 50mA 250mA Input Voltage(V) Output Voltage(V) 1.76 1.77 1.78 1.79 1.80 1.82 1.81 1.83 1.84 1-3) DC/DC Efficiency vs. Output Current 1-4) DC/DC Supply Current vs. Temperature R5220x181A 2.8V 3.6V 5.5V 100 Output Current(mA) Efficiency(%) 0.1 1 10010 1000 200 240 220 400 360 280 380 320 260 300 340 Temperature Topt(°C) Supply Current ISS(μA) DC/DC_VSET : 1.0V DC/DC_VSET : 1.8V VIN=VCE=VMODE=3.6V -50 75 25-25 50 0 100 1-5) DC/DC Supply Current vs. Input Voltage 1-6) DC/DC Output Waveform R5220x121A Input Voltage(V) Supply Current ISS(μA) 200 220 240 260 280 320 300 360 340 380 400 V IN=VCE=VMODE -50 7525-25 500 100 1.14 1.26 1.24 1.16 1.20 1.18 1.22 03 14 25 Time(μs) Output Ripple Voltage(V) CIN=COUT=Ceramic 10μF,L=4.7μH VIN=3.6V,IOUT=300mA ÿ R5220D (SON-6) is the discontinued product as of March 2019.

1-7) DC/DC Output Voltage vs. Temperature R5220x181A R5220x181A 1.74 1.86 1.84 1.76 1.80 1.78 1.82 03 14 25 Time(μs) Output Ripple Voltage(V) 1.70 1.72 1.90 1.84 1.80 1.88 1.76 1.82 1.78 1.86 1.74 Temperature Topt(°C) Output Voltage VOUT(V) IOUT=50mA -50 75 25-25 50 0 100 1-8) DC/DC Oscillator Frequency vs. Temperature 1-9) DC/DC Oscillator Frequency vs. Input Voltage R5220x181A 1000 1050 1400 1250 1350 1150 1200 1300 1100 Temperature Topt(°C) Frequency fosc(kHz) VIN=3.6V -50 75 25-25 50 0 100 1050 1350 1250 1150 1200 1300 1100 Input Voltage(V) Frequency fosc(kHz) 1-10) Soft-start time vs. Temperature 1-11) UVLO Detector Threshold/ Released Voltage vs. Temperature DC/DC_VSET : 1.0V DC/DC_VSET : 1.8V 250 100 200 150 Temperature Topt(°C) Soft-Start Time (μs) -50 7525-25 500 100 UVLO Detector Threshold UVLO Released Voltage 2.0 2.8 2.3 2.7 2.1 2.5 2.2 2.6 2.4 Temperature Topt(°C) VDD Voltage Level(V) -50 7525-25 500 100 ÿ R5220D (SON-6) is the discontinued product as of March 2019.

1-12) MODE Input Voltage vs. temperature 1-13) Pc h Transistor On Resistance vs. Temperature 0.0 0.8 0.3 0.7 0.1 0.5 0.2 0.6 0.4 Temperature Topt(°C) MODE Input Voltage VMODE(V) -50 7525-25 500 100 0.0 0.8 0.3 0.7 0.1 0.5 0.2 0.6 0.4 Temperature Topt(°C) PchTr. On Resistance (Ω) VIN=3.6V -50 75 25-25 50 0 100 1-14) Nch Transistor On Resistance vs. 1-15) DC/DC Lx Current Limit vs. Temperature Temperature R5220x131A 0.0 0.8 0.3 0.7 0.1 0.5 0.2 0.6 0.4 Temperature Topt(°C) NchTr. ON Resistance (Ω) VIN=3.6V -50 75 25-25 50 0 100 400 1200 1000 600 800 Temperature Topt(°C) Lx Limit Current(mA) -50 7525-25 500 100 2) VR 2-1) VR Output Voltage vs. Output Current R5220x121A R5220x181A VIN=2.8V VIN=3.6V VIN=5.5V 0.0 1.4 0.4 1.2 0.8 0.2 1.0 0.6 0 50 150100 200 Output Current IOUT(mA) Output Voltage VOUT(V) VIN=2.8V VIN=3.6V VIN=5.5V 0.0 0.6 1.4 0.2 1.6 1.8 2.0 1.0 0.8 0.4 1.2 0 50 150100 200 Output Current I OUT(mA) Output Voltage VOUT(V) ÿ R5220D (SON-6) is the discontinued product as of March 2019.

2-2) VR Output Voltage vs. Input Voltage R5220x121A R5220x181A IOUT=1mA IOUT=25mA IOUT=50mA 0.0 1.4 1.2 0.8 1.0 0.4 0.2 0.6 04 5312 6 Input Voltage VIN(V) Output Voltage VOUT(V) IOUT=1mA IOUT=25mA IOUT=50mA 2.0 1.8 1.4 1.6 0.6 0.2 1.0 0.8 0.4 1.2 04 5312 6 Input Voltage VIN(V) Output Voltage VOUT(V) 2-3) VR Supply Current vs. Input Voltage R5220x121A R5220x181A 0.0 8.0 7.0 5.0 6.0 1.0 3.0 2.0 4.0 04 5312 6 Input Voltage VIN(V) Supply Current ISS2(μA) 0.0 8.0 7.0 5.0 6.0 1.0 3.0 2.0 4.0 04 5312 6 Input Voltage VIN(V) Supply Current ISS2(μA) 2-4) VR Output Voltage vs. Temperature R5220x121A R5220x181A 1.16 1.24 1.19 1.23 1.17 1.21 1.18 1.22 1.20 Temperature Topt(°C) Output Voltage VOUT(V) -50 7525-25 500 100 1.76 1.84 1.79 1.83 1.77 1.81 1.78 1.82 1.80 Temperature Topt(°C) Output Voltage VOUT(V) -50 7525-25 500 100 ÿ R5220D (SON-6) is the discontinued product as of March 2019.

2-5) VR Supply Current vs. Temperature R5220x121A R5220x181A VIN=3.6V VIN=5.5V Temperature Topt(°C) Supply Current ISS2(μA) -50 7525-25 500 100 VIN=3.6V VIN=5.5V Temperature Topt(°C) Supply Current ISS2(μA) -50 7525-25 500 100 2-6) Dropout Voltage vs. Output Current R5220x121A R5220x181A -40°C 25°C 85°C 800 300 700 100 500 200 600 400 01 0 4 030 20 50 Output Current IOUT(mA) Dropout Voltage VDIF(V) 1.74 1.86 1.84 1.76 1.80 1.78 1.82 03 14 25 Time(μs) Output Ripple Voltage(V) 2-7) Ripple Rejection vs. Input Voltage R5220x121A R5220x181A f=400Hz f=1kHz f=10kHz f=100kHz Input Voltage VIN(V) Ripple Rejection RR(dB) Ripple 0.2Vp-p,IOUT=25mA, CIN=none,COUT=Ceramic10μF f=400Hz f=1kHz f=10kHz f=100kHz Input Voltage V IN(V) Ripple Rejection RR(dB) Ripple 0.2Vp-p,IOUT=25mA, CIN=none,COUT=Ceramic10μF ÿ R5220D (SON-6) is the discontinued product as of March 2019.

2-8) VR Ripple Rejection vs. Frequency R5220x121A R5220x181A IOUT=50mA IOUT=25mA IOUT=1mA 100 0.1 10 1 100 Frequency f (kHz) Ripple Rejection(dB) VIN=2.2V+0.2Vp-p CIN=none COUT=Ceramic10μF IOUT=50mA IOUT=25mA IOUT=1mA 100 0.1 10 1 100 Frequency f (kHz) Ripple Rejection(dB) VIN=2.8V+0.2Vp-p CIN=none COUT=Ceramic10μF 2-9) Input Transient Response R5220x121A R5220x181A 1.16 1.28 1.20 1.24 1.22 1.26 1.18 Time T(ms) Output Voltage(V) IOUT=10mA CIN=none, COUT=Ceramic10μF Input Voltage(V) 1.76 1.88 1.80 1.84 1.82 1.86 1.78 Time T(ms) Output Voltage(V) IOUT=10mA CIN=none, COUT=Ceramic10μF Input Voltage(V) 2-10) Load Transient Response R5220x121A R5220x121A 0mA 10mA 0mA 1.10 1.40 1.20 1.30 1.25 1.35 1.15 Time T(μs) Output Voltage(V) VIN=3.6V,CIN=COUT=Ceramic10μF Load Current(mA) 1mA 25mA 1mA 1.10 1.40 1.20 1.30 1.25 1.35 1.15 Time (μs) Output Voltage(V) VIN=3.6V,CIN=COUT=Ceramic10μF Load Current(mA) ÿ R5220D (SON-6) is the discontinued product as of March 2019.

1.70 2.00 1.80 1.90 1.85 1.95 1.75 Time T(μs) Output Voltage(V) VIN=3.6V,CIN=COUT=Ceramic10μF Load Current(mA) 1mA 25mA 1mA Time T(μs) Output Voltage(V) VIN=3.6V,CIN=COUT=Ceramic10μF Load Current(mA) 1.70 2.00 1.80 1.90 1.85 1.95 1.75 3) Mode Transient Response between VR and DC/DC 3-1) VR to DC/DC Mode Transient Response 3-2) DC/DC to VR Mode Transient Response R5220x151A R5220x151A VMODE VOUT 1.30 1.60 1.40 1.50 1.45 1.55 1.35 0 200 600 800400 1000 Time (μs) Output Voltage(V) VIN=3.6V,IOUT=0.5mA CIN=COUT=Ceramic10μF MODE(V) VMODE VOUT 1.30 1.60 1.40 1.50 1.45 1.55 1.35 0 200 600 800400 1000 Time (μs) Output Voltage(V) VIN=3.6V,IOUT=0.5mA CIN=COUT=Ceramic10μF MODE(V) ÿ R5220D (SON-6) is the discontinued product as of March 2019.

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