APE1702

APE1702_08 A-POWER | Alldatasheet

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Electronics Corp. FEATURES DESCRIPTION Output Voltage : 3.3V, 5V, 12V and Adjustable Output Voltage Adjustable Version Output Voltage Range, 1.23V to 19.5V+4% 150KHz +15% Fixed Switching Frequency. Voltage Mode Non-synchronous PWM Control. Thermal-shutdown and Current-limit Protection. ON/OFF Shutdown Control Input. Short Circuit Protect(SCP) Operating Voltage can be up to 22V Output Load Current 3A 5-Lead TO-263/TO-220 Low Power Standby Mode. Built-in Switching Transistor on Chip RoHS Compliant 1. ADJUSTABLE OUTPUT VOLTAGE VERSION 2. ADJUSTABLE OUTPUT VOLTAGE VERSION WITH DELAYED STARTUP Data and specifications subject to change without notice 200803105 APE1702 TYPICAL APPLICATION 150KHz, 3A PWM BUCK DC/DC CONVERTER The APE1702 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor. It saves board space. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compen- sation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. if current limit function occurs and VFB is down below 0.5V the switching frequency will be reduced. The APE1702 series operates at a switching frequency of 150KHz thus allow smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load con- ditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V and an adjustable type. The chips are available in a 5-Lead TO-263 and 5-Lead TO-220 package.

Electronics Corp. 3. FIXED OUTPUT VOLTAGE VERSION APE1702X-XX TYPICAL APPLICATION APE1702

ORDERING INFORMATION

S : TO-263-5L P : TO-220-5L 33 : 3.3V 50 : 5.0V 12 : 12V Blank : ADJ

Electronics Corp. APE1702 ABSOLUTE MAXIMUM RATINGS (at TA=25°C) Maximum Supply Voltage(VCC) +24V ON/OFF PIN Input Voltage(VEN) -0.3V to VCC Feedback PIN Voltage(VFB) -0.3V to 16V Output Voltage to Ground(VOUT) -0.7 to 24V Power Dissipation(PD) (TJ-TA)/RthJA Storage Temperature Range(TST) -65°C To 150°C Operating Temperature Range(TOP) -40°C To 125°C Operating Supply Voltage(VOP) +4.5V to +22V Thermal Resistance from Junction to Case(RthJC) 3.5°C/W 20°C/W Note. Rth JA is measured with the PCB copper area(need connect to Metal tab) of approx. 3 in2 (multi-layers)

PACKAGE INFORMATION

(VIN=12V, TA=25℃, unless otherwise specified) Parameter SYM TEST CONDITION MIN TYP MAX UNITS Quiescent Current ICCQ VFB=12V force driver off mA VFB=1.3V -10 -50.0 (ADJ Version Only) -10 -100.0 VEN=5V 100 uA VCC=22V 100 uA Pear Current, No outside circuit VFB=0V force driver on Max. Duty Cycle (ON) VFB=0V force driver on 100 Min. Duty Cycle (OFF) VFB=12V force driver off 127 150 173 KHz 110 173 KHz Oscillation Frequency of Short (Adjustable) When VFB < 0.5V KHz Circuit Protect (Fixed) When < VOUT x 40% KHz IOUT=2A, No outside circuit 1.5 VFB=0V force driver on 1.6 Thermal Resistance from Junction to Ambient(RthJA) Feedback Bias Current IFB nA Shutdown Supply Current ISD A DC FOSC Oscillation Frequency Current Limit 3.3 ICL FSCP V Saturation Voltage VSAT 1.3 TO-263-5L TO-220-5L

Electronics Corp. APE1702 ELECTRICAL SPECIFICATIONS(Cont.) Parameter SYM TEST CONDITION MIN TYP MAX UNITS VIH High (regulator ON) V VIL Low (regulator OFF) 0.6 V ISH VEN=2.5V(OFF) -0.1 -0.5 uA ISL VEN=0.5V(ON) -0.01 uA No outside circuit VFB=12V force driver on SW PIN=-0.8V VCC=22V force driver off mA Thermal Shutdown Temp. TSD 135 Version Characteristics Symbol Conditions MIN TYP MAX UNITS 4.5V < VCC < 22V 0.2A < ILOAD <3A VOUT programmed for 3.3V η VCC=12V, ILOAD=3A 4.75V < VCC < 22V 0.2A < ILOAD <3A η VCC=12V, ILOAD=3A 7V < VCC < 22V 0.2A < ILOAD <3A η VCC=12V, ILOAD=3A 15V < VCC < 22V 0.2A < ILOAD <3A η VCC=15V, ILOAD=3A PIN DESCRIPTIONS PIN SYMBOL PIN DESCRIPTION VSS GND Pin FB Control Voltage Feedback Control for ADJ Version EN ON/OFF Shutdown OUT Output Voltage Feedback Control for Fixed Version SW Switching Output VCC IC Power Supply Pin EN PIN Logic Input Threshold Voltag EN PIN Input Current 1.3 APE1702-3.3V VOUT 3.168/ 3.135 APE1702-12V uA VFB APE1702-ADJ 1.193/ 1.180 1.23 1.267/ 1.280 V SW PIN=0V -200 ISWL 3.3 3.432/ 3.465 V APE1702-5.0V VOUT 4.80/ 4.75 5.0 5.20/ 5.25 V V VOUT 11.52/ 11.4 12.48/ 12.6 SW PIN Leakage Current Output Feedback Voltage Efficiency Efficiency Output Voltage Efficiency Output Voltage Efficiency Output Voltage

Electronics Corp. APE1702 BLOCK DIAGRAM FUNCTION DESCRIPTION PIN FUNCTION VCC VSS SW FEEDBACK This is positive input supply for the IC switching regulator. A suitable input bypass capacitor must be presented at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. Circuit ground. Internal Switch. The voltage at this pin switches between (+VCC - VSAT) and approximately - 0.5V, with a duty cycle of approximately VOUT / VCC. To minimize coupling to sensitive circuitry, the PC board copper area connected to this pin should be minimized. Senses in the regulated output voltage to complete the feedback loop.

Electronics Corp. APE1702 FUNCTION DESCRIPTION EN THERMAL CONSIDERATIONS Allows the switching regulator circuit to be shutdown using logic level signals thus dropping the total input supple current to approximately 100uA. Pulling this pin below a threshold voltage of approximately 1.3V turns the regulator on, and pulling this pin above 1.3V (up to a maximum of VCC) shuts the regulator down. if this shutdown feature is not needed, the EN pin can be wired to the ground pin. The TO-263-5L package needs a heat sink under most conditions. The size of the heat sink depends on the input voltage, the output voltage, the load current and the ambient temperature. The APE1702 junction temperature rises above ambient temperature for a 2A load and different input and output voltages. The data for these curves was taken with the APE1702 (TO-263-5L package) operating as a buck-switching regulator in an ambient temperature of 25°C (still air). These temperature increments are all approximate and are affected by many factors. Higher ambient temperatures required more heat sinker. For the best thermal performance, wide copper traces and generous amounts of printed circuit board copper (need connect to the VSS pins) should be used in the board layout, (One exception is the SW pin, which should not have large areas of copper.) to the surrounding air, and moving air lowers the thermal resistance even further. Package thermal resistance and junction temperature increments are all approximate. The increments are affected by a lot of factors. Some of these factors include board size, shape, thickness, position, location, and even board temperature. Other factors are, trace width, total printed circuit copper area, copper thickness, single or double-sided, multi-layer board and the amount of solder on the board. The effectiveness of the PC board to dissipate heat also depends on the size, quantity and spacing of other components on the board, as well as whether the surrounding air is still or moving. Furthermore, some of these components such as the catch diode will add heat to the PC board and the heat can vary as the input voltage changes. For the inductor, depending on the physical size, type of core material and the DC resistance, it could either act as a heat sink taking heat away from the board, or it could add heat to the board.

1.18 1.20 1.22 1.24 1.26 1.28 10 12 14 16 18 20 22 24 Vin(V) VFB(V) ICCQ VS VIN 0.00 1.00 2.00 3.00 4.00 5.00 6.00 10 12 14 16 18 20 22 24 Vin(V) Iccq(mA) FOSC VS VIN FOSC VS TEMPERATURE Fosc VS VIN 140 145 150 155 160 165 170 10 12 14 16 18 20 22 24 Vin(V) Fosc(KHz) FOSC VS TEMP 120 130 140 150 160 170 180 -20 100 120 temp (℃) Vout(V) VFB VS TEMPERATURE ICCQ VS TEMPERATURE VFB VS TEMP 1.18 1.20 1.22 1.24 1.26 1.28 -20 100 120 temp (℃) Vout(V) ICCQ VS TEMP 0.00 1.00 2.00 3.00 4.00 5.00 6.00 -20 100 120 temp (℃) Vout(V) Advanced Power Electronics Corp.

(VIN=12V, VOUT=5V, IOUT=3A) Power on test wave (VIN=12V, VOUT=5V, IOUT=3A ) Load Transient Response (VIN=12V, VOUT=5V, IOUT=0.2~3A) EN on test wave (VIN=12V, VOUT=5V, IOUT=3A ) Efficiency (VIN=12V, VOUT=5.0V) Efficiency (VIN=12V, VOUT=3.3V) 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Iout(A) Efficiency(%) 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Iout(A) Efficiency(%) SW ISW SW ISW VOUT VIN VOUT (AC) SW ISW VOUT (AC) SW ISW VOUT VIN Advanced Power Electronics Corp.

Package Outline : TO-263-5L Millimeters MIN NOM MAX A 4.40 4.60 4.80 b 0.66 0.79 0.91 0.00 0.15 0.30 c 0.36 0.43 0.50 2.29 2.54 2.79 E 9.80 10.10 10.40 1.25 1.35 1.45 D 8.60 8.80 9.00 e L 14.60 15.20 15.80 1.All Dimensions Are in Millimeters. 2.Dimension Does Not Include Mold Protrusions. Part Marking Information & Packing : TO-263-5L θ 7.60 1.27 5.90 1.70 SYMBOLS ADVANCED POWER ELECTRONICS CORP. Output voltage Part Number 1702S-XX YWWSSS LOGO Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Part Number YWWSSS LOGO Y：Last Digit Of The Year WW：Week SSS：Sequence Package Code

Package Outline : TO-220-5L Millimeters MIN NOM MAX A 4.07 4.45 4.82 b 0.76 0.89 1.02 C 0.36 0.50 0.64 D 14.22 14.86 15.50 E 9.78 10.16 10.54 e 1.57 1.71 1.85 6.68 6.81 6.93 F 1.14 1.27 1.40 5.46 6.16 6.86 2.29 2.74 3.18 L 13.21 13.97 14.73 3.68 3.81 3.94 2.54 2.73 2.92 1.All Dimensions Are in Millimeters. 2.Dimension Does Not Include Mold Protrusions. Part Marking Information & Packing : TO-220-5L Q SYMBOLS ADVANCED POWER ELECTRONICS CORP. φp YWWSSS Package Code Part Number LOGO Output voltage 1702P-XX Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence