LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

AP3768

Preliminary Datasheet

2

BCD Semiconductor Manufacturing Limited

Aug. 2010 Rev. 1. 0

Pin Configuration

M Package

(SOIC-8)

Pin Description

Pin Number

Pin Name

Function

1

CS

The primary current sense

2

VCC

Supply voltage

3

OUT

This pin drives the base of external power NPN switch

4

GND

Ground

5

CPC

This pin connects a capacitor for output cable compensation

6

FB

The voltage feedback from the auxiliary winding

7

CPR

Connects a resistor to FB pin for adjustable output cable compensation

8

BIAS

This pin sets the bias current inside AP3768 with an external resistor to GND

Figure 2. Pin Configuration of AP3768 (Top View)

1

2

3

4

8

7

6

5

CS

VCC

OUT

GND

CPC

FB

CPR

BIAS