AP3101M-E1

Preliminary Datasheet GREEN MODE PWM CONTROLLER General Description The AP3101 is a green PWM controller operating in current mode. It is specially designed for off-line ACDC adapter and battery charger applications where the needs for low standby power and better protection function are increasing. The AP3101 features adjustable oscillator frequency in normal operation, which is done by an external resistor. It automatically switches to skip cycle mode when output power drops below a given level. The IC also features low start-up and operation current for its BiCMOS process. The AP3101 provides comprehensive protection features including leading edge blanking, synchronized slope compensation, over-current, over-temperature and short circuit protection. The AP3101 is available in 2 packages: SOIC-8 and DIP-8. AP3101 Features · · · · · · · · · · · Green Current Mode PWM Controller Adjustable Skip Level Leading Edge Blanking (LEB) Cycle by Cycle Current Limit Built-in Short Circuit Protection Built-in Synchronized Slope Compensation Low Start-up/Operating Current: 30µA/3mA Adjustable Oscillator Frequency Totem Pole Output Including Soft Driving Under-Voltage Lockout (UVLO) Accurate Over-Temperature Protection with Hysteresis Applications · · Off-line AC-DC Adapter Battery Charger Applications SOIC-8 DIP-8 Figure 1. Package Types of AP3101 Apr. 2007 Rev. 1. 3 1 BCD Semiconductor Manufacturing Limited Preliminary Datasheet GREEN MODE PWM CONTROLLER Pin Configuration AP3101 M/P Package (SOIC-8/DIP-8) GND FB VIN RI 1 2 3 4 8 7 6 5 GATE VCC SENSE ADJ Figure 2. Pin Configuration of AP3101 (Top View) Pin Description Pin Number 1 2 3 4 5 6 7 8 Pin Name GND FB VIN RI ADJ SENSE VCC GATE Power ground Feedback Start-up current in Reference setting Adjust the level of skip cycle Current sense The positive supply of the control IC Driver output Function Apr. 2007 Rev. 1. 3 2 BCD Semiconductor Manufacturing Limited Preliminary Datasheet GREEN MODE PWM CONTROLLER Functional Block Diagram AP3101 VCC GND 1 Q D CLK RB OSC Short circuit Protection 6V OTP Skip Cycle 4R R 6V PWM ON/OFF Driver 8 GATE RI 4 5 ADJ VIN 3 Internal Bias 2R 2 FB VCC 7 UVLO 16V/10V 0.85V Slope Current Limit Compensation R LEB 6 SENSE Figure 3. Functional Block Diagram of AP3101 Apr. 2007 Rev. 1. 3 3 BCD Semiconductor Manufacturing Limited Preliminary Datasheet GREEN MODE PWM CONTROLLER Ordering Information AP3101 AP3101 Circuit Type Package P: DIP-8 M: SOIC-8 E1: Lead Free TR: Tape and Reel Blank: Tube Package DIP-8 SOIC-8 Temperature Range -40 to 85oC -40 to 85oC Part Number AP3101P-E1 AP3101M-E1 AP3101MTR-E1 Marking ID AP3101P-E1 3101M-E1 3101M-E1 Packing Type Tube Tube Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Apr. 2007 Rev. 1. 3 4 BCD Semiconductor Manufacturing Limited Preliminary Datasheet GREEN MODE PWM CONTROLLER Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Gate Output Current Input Voltage to FB Input Voltage to SENSE Input Voltage to RI Input Voltage to ADJ Operating Junction Temperature Storage Temperature Range ESD (Human Body Model) ESD (Machine Model) Power Dissipation at TA