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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
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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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Test Circuit
KA2807
VCC=31V
A1
0.3V
1K
ICC=5mA
0.002uF
8
7
1.45MΩ
6
5
KA2807
21
S1
1
3
2
A2
1K
A3
100K
S2
0.047uF
SIG
43
3
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KA2807
Mechanical Dimensions
Package
6.40 ±0.20
±0.008
0.252
8-DIP
Dimensions in millimeters
0.79
0.031
()
±0.10
#1
#4 #5
7.62
0.300
#8
MAX
9.20 ±0.20
9.60
0.378
5.08
MAX
0.200
3.40 ±0.20
0.134 ±0.008
0.362 ±0.008
0.33
0.013
3.30 ±0.30
0.130 ±0.012
MIN
0.46
2.54
0.018 ±0.004
0.100
1.524 ±0.10
0.060 ±0.004
+0.10
0.25
–0.05
+0.004
0.010
–0.002
0~15°
4
Page 5
KA2807
Mechanical Dimensions
Package
(Continued)
Dimensions in millimeters
8-SOP
5
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KA2807
Ordering Information
Product Number Package Operating Temperature
KA2807 8-DIP
KA2807D 8-SOP
-40 ~ +70°C
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.
LIFE SUPPORT POL I CY
FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein :
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
2. A critical component in any component of a life support
device or sy stem whose fai lure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec t iv ene ss .
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
www.fairchildsemi.com
10/2/02 0.0m 001
2002 Fairchild Semiconductor Corporation
Stock#DSxxxxxxxx
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