AP3101 Datasheet | BCD Semiconductor

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 Bi CMOS process. The AP3101 provides prehensive protection features including leading edge blanking, synchronized slope pensation, 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 pensation Low Start-up/Operating Current: 30µA/3m A 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 Q D CLK RB OSC Short...