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APW38HC45AJC-TUL Datasheet(PDF) 2 Page - Anpec Electronics Coropration |
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APW38HC45AJC-TUL Datasheet(HTML) 2 Page - Anpec Electronics Coropration |
2 / 11 page Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 APW38HC42A/3A/4A/5A www.anpec.com.tw 2 Duty Cycle Startup 8.4V Minimum Operating 7.6V Startup 14.5V Minimum Operating 9V 0~96% APW38HC43A APW38HC42A 0~50% APW38HC45A APW38HC44A Block Diagram Functional Pin Description Pin Name Pin Number Function Description 1 COMP Compensation: Connect external compensation network to modify the error amplifier output. 2 FB Feedback (Input): Error amplifier input. Feedback is 2.5V at desired output voltage. 3ISNS Current Sense (Input): Current sense comparator input. Connect to current sensing resistor or current transformer. 4 RT/CT Timing Resistor/Timing Capacitor: Connect external RC network to select switching frequency. 5 GND Ground: Combined analog and power ground. 6 OUT Power Output: Totem-pole output. 7VDD Analog Supply (Input): Controller circuitry supply input. Return to analog ground (AGND). 8 VREF 5V Reference (Output): Connect external RC network. UVLO T Q Oscillator 5V Reference S Q R + - + - OUT ISNS GND COMP 2.5V FB RT/CT VREF VDD R 2R E. A. Selection Guide |
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