AP3842GP-E1 查看數據表（PDF） - BCD Semiconductor

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AP3842GP-E1

GREEN MODE PWM CONTROLLER

BCD Semiconductor 

GREEN MODE PWM CONTROLLER

Pin Configuration

P/M Package

(DIP-8/SOIC-8)

COMP

FB

CS

RT/CT

1

8

2

7

3

6

4

5

REF

VCC

OUTPUT

GND

Figure 2. Pin Configuration of AP384XG

Data Sheet

AP384XG

Pin Description

Pin Number

1

2

3

4

5

6

7

8

Pin Name

COMP

FB

CS

RT/CT

GND

OUTPUT

VCC

REF

Function

This pin is the Error Amplifier output and is made available for loop compensation.

The inverting input of the Error Amplifier. It is normally connected to the switching power

supply output through an external resistor divider.

It is used either for current sense (normal mode) or skip cycle level selection (standby mode).

The oscillator frequency and maximum output duty cycle are programmed by connecting

resistor RT to REF and capacitor CT to ground.

The ground pin.

This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are

sourced and sunk by this pin.

The power supply pin.

This is the reference output. It provides charging current for capacitor CT through resistor RT.

Aug. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

2

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