HT2801S

2/6

High Accuracy CV/ CC Primary Sensing Regulation Controller IC

www.hotchip.com.cn

Ver1.0

Pin Configuration

Pin Configuration

Pin #

Pin Name

Description

1

VCC

Power Supply Pin of IC. An external filter capacitor of Low ESR electrolytic

capacitor is suggested to gain stable supply voltage

.

2

FB

Output Feedback Pin to detect output condition through the auxiliary winding

voltage of the transformer

3

CPC

Connected with a 100+nf capacitor, CPC Pin becomes output cable drop- out

compensation Pin.

4

CS

current via external sensing resistor. When voltage on the resistor surpasses

maximum value, internal Power BJT will be turned off immediately

5- 6

HV

The Collector of internal Power Transistor

7

GND

Ground Pin

Internal Function Block Diagram