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KA2807
Earth Leakage Detector
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.
8-DIP
1
8-SOP
1
Internal Block Diagram
VCC
8
AMP OUT
5
TIMING
RESISTOR
6
V.REG.
TIMING CONTROL
+INPUT
3
+
AMP
7
TIMING
CAPACITOR
-INPUT
2
_
LATCH
4
GND
1
TRIGGER OUT
Rev. 1.0.0
©2002 Fairchild Semiconductor Corporation
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
