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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 protection from line to ground fault currents on grounded circuits 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
(c)2002 Fairchild Semiconductor Corporation
KA2807
Absolute Maximum Ratings
Parameter Supply Current Power Dissipation 8-DIP 8-SOP Operating Temperature Range Storage Temperature Range Symbol ICC PD TOPR TSTG Value 19 1.25 0.41 -40 ~ +70 -55 ~ +150 Unit mA W C C
Electrical Characteristics
(TA = 25C, ICC = 5mA) Parameter Shunt Regulator Voltage Amp Reference Voltage Amp High Output Voltage Symbol VREG VREF VOH Conditions Pin8, S1:2, S2:OFF Pin3, S1:2, S2:OFF Pin5, S1:3, S2:ON Sig: 800Hz, 3.0VP-P Sinewave Pin5, S1:3, S2:ON Sig: 800Hz, 3.0VP-P Sinewave Pin2, S1:3, S2:ON Sig: 800Hz, 1.0VP-P ~ 2.5VP-P Sinewave Min. 23 9.5 17 Typ. 26 10.5 19 Max. 29 11.5 21 Unit V V V
Amp Low Output Voltage
VOL
1.5
2.5
3.5
V
Amp Sensitivity Current
ISEN
3.5
5
6.5
Arms
Latch On Voltage
Pin7, S1:3, S2:ON VON(LATCH) Sig: 800Hz, 3.0VP-P Sinewave ITR VS 1 ZO ISINK Pin1, S1:3, S2:ON Sig:800Hz, 3.0VP-P Sinewave Pin1, S1:2, S2:OFF Pin1, S1:2, S2:OFF Pin1, S1:2, S2:OFF
16.5
17.5
19.5
V
SCR Trigger Current Output Low Voltage Output Impedance Output Sink Current
0.5 2.0
1 100 100 6.0
2.0 240 250 -
mA mV mA
2
KA2807
Test Circuit
VCC=31V
1K
ICC=5mA
0.002uF
1.45M
8
7 KA2807
6
5
1
S1
2
3
4
A3 1 A1 2 3 A2 1K 100K S2
0.3V
0.047uF SIG
3
KA2807
Mechanical Dimensions
Package Dimensions in millimeters
8-DIP
1.524 0.10 0.018 0.004 0.060 0.004 0.46 0.10 6.40 0.20 0.252 0.008 ( #1 #8 9.20 0.20 0.362 0.008 9.60 MAX 0.378 #4 #5 2.54 0.100 5.08 MAX 0.200 7.62 0.300 3.40 0.20 0.134 0.008 3.30 0.30 0.130 0.012 0.33 0.013 MIN 0.79 ) 0.031
0.25 -0.05
0~15
+0.10
0.010 -0.002
+0.004
4
KA2807
Mechanical Dimensions (Continued)
Package Dimensions in millimeters
8-SOP
5
KA2807
Ordering Information
Product Number KA2807 KA2807D Package 8-DIP 8-SOP Operating Temperature -40 ~ +70C
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD 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 ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES 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 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 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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