Fairchild Semiconductor KA2807 Datasheet
KA2807
Earth Leakage Detector
www.fairchildsemi.com
Features
• Full Advanta ge 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
Internal Block Diagram
VCC
8
Description
The KA2807 is a IC for ground fault circuit interrupters
which are intended to provide an electrical shock hazard protection from line to ground fault currents on grounded circuits of 120V supplies.
8-DIP
1
8-SOP
1
AMP OUT
56
TIMING
RESISTOR
V.REG.
+INPUT
-INPUT
©2002 Fairchild Semiconductor Corporation
3
2
4
GND
+
AMP
_
TIMING CONTROL
LATCH
1
TRIGGER OUT
TIMING
7
CAPACITOR
Rev. 1.0.0
KA2807
Absolute Maximum Ratings
Parameter Symbol Value Unit
Supply Current I
Power Dissipation
8-DIP
8-SOP
Operating Temperature Range T
Storage Temperature Range T
CC
P
D
OPR
STG
19 mA
1.25
0.41
-40 ~ +70 °C
-55 ~ +150 °C
W
Electrical Characteristics
(TA = 25°C, ICC = 5mA)
Parameter Symbol Conditions Min. Typ. Max. Unit
Shunt Regulator Voltage V
Amp Reference Voltage V
Amp High Output Voltage V
REG
REF
OH
Pin8, S1:2, S2:OFF 23 26 29 V
Pin3, S1:2, S2:OFF 9.5 10.5 11.5 V
Pin5, S1:3, S2:ON
Sig: 800Hz, 3.0V
P-P
17 19 21 V
Sinewave
Amp Low Output Voltage V
OL
Pin5, S1:3, S2:ON
Sig: 800Hz, 3.0V
P-P
1.5 2.5 3.5 V
Sinewave
Pin2, S1:3, S2:ON
Amp Sensitivity Current I
SEN
Sig: 800Hz, 1.0V
P-P
~ 2.5V
P-P
3.5 5 6.5 µArms
Sinewave
Pin7, S1:3, S2:ON
Latch On Voltage V
ON(LATCH)
Sig: 800Hz, 3.0V
P-P
16.5 17.5 19.5 V
Sinewave
Pin1, S1:3, S2:ON
SCR Trigger Current I
TR
Sig:800Hz, 3.0V
P-P
0.5 1 2.0 mA
Sinewave
Output Low Voltage V
Output Impedance Z
Output Sink Current I
1 Pin1, S1:2, S2:OFF - 100 240 mV
S
O
SINK
Pin1, S1:2, S2:OFF - 100 250 Ω
Pin1, S1:2, S2:OFF 2.0 6.0 - mA
2
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