©2002 Fairchild Semiconductor Corporation

www.fairchildsemi.com

Rev. 1.0.0

Features

• Full Advantage of the UL943

• Built-In Voltage Regulator

• Sense Coil: 1000:1

• GND/Neutral Coil: 200:1

• Trip Time in Normal Fault and Ground Neutral Fault is

18ms Typ

• Wide Operating Temperature Range

• Excellent ESD Characteristic

• 1mA Output Current Pulse to Trigger SCR

Description

The KA2807 is a IC for ground fault circuit interrupters

which are intended to provide an electrical shock hazard pro-

tection from line to ground fault currents on grounded cir-

cuits of 120V supplies.

Internal Block Diagram

8

56

7

1

4

3

2

V.REG.

TIMING CONTROL

AMP

LATCH

VCC

AMP OUT

TIMING

RESISTOR

TIMING

CAPACITOR

TRIGGER OUT

GND

+INPUT

-INPUT

+

_

K A2 8 0 7

Ea r t h Le a k a ge De t e c t or

8-DIP

1

8-SOP

1