2013/01/30

2

REV.A.4

EM8672

Pin Configuration

Pin Assignment

Pin Name

Pin Number

Pin Function

SOP-8

SOP-7

GND

4

4

Ground.

COMP

2

2

Voltage feedback pin. By connecting a photo-coupler to close the control loop and

achieve the regulation.

LATCH

1

1

This pin provides an Internal sourcing current of 100uA, used for external latch

circuit. When this pin < 1.05V and after 160uS, IC is latch off. By connecting a NTC

resistor to GND, it can achieve the OTP protection function. Keep this pin floating

to disable the latch protection.

CS

3

3

Senses the primary current.

VCC

6

6

IC Power Supply Pin.

GATE

5

5

Gate drive output to drive the external MOSFET.

NC

7

--

No Internal Connection.

HV

8

7

For start-up, this pin is pulled high to the line input or the bulk capacitor via

resistors.