LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER

AP3710

Preliminary Datasheet

2

BCD Semiconductor Manufacturing Limited

Nov. 2007 Rev. 1. 2

Pin Configuration

Figure 2. Pin Configuration of AP3710 (Top View)

GND

NC

VCC

OUT

NC

VA

NC

VSEN

8

7

6

5

1

2

3

4

Pin Description

Pin Number

Pin Name

Function

1

GND

Power supply ground

2

VCC

The power supply of the IC and this terminal is also used for the feedback control

3, 6, 8

NC

Not connected

4

OUT

The PWM output is directly connected to the emitter of NPN transistor or the source

of MOSFET

5VSEN

It is used for line voltage compensation, and PWM uses this to terminate the output

switch conduction

7VA

It is used for short circuit protection, and this terminal will be pulled down to low

level when short circuit happens at the load side

M/P Package

(SOIC-8/DIP-8)