LOW POWER TWO-WIRE GROUND FAULT INTERRUPTER - Unisonic Technologies
Description
UNISONIC TECHNOLOGIES CO.
, LTD
GF2140
LINEAR INTEGRATED CIRCUIT
LOW POWER TWO-WIRE GROUND FAULT INTERRUPTER
DESCRIPTION
As a low power controller for AC output appliance leakage current interrupters, the UTC GF2140 can detect hazardous current paths to ground, and trigger SCR to protect.
FEATURES
* Directly powered from the AC line * Build-in bridge rectifer * Interface to SCR * Adjustable trip current and time delay * Minimum external components * For two-wire system * Be used in 110V or 220V system
ORDERING INFORMATION
Ordering Number GF2140G-S08-R
Package SOP-8
SOP-8
Packing Tape Reel
MARKING
www.
unisonic.
com.
tw Copyright © 2015 Unisonic Technologies Co.
, Ltd
1 of 4
QW-R121-016.
C
GF2140
PIN CONNECTIONS
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN
PIN NAME
I/O
1
Rsct
O
2 VFB I
3
VREF
I
4 GND
5 Line I
6
Neutral
I
7 SCR Trigger
8
C Delay
O
PIN FUNCTION Output of Leakage current first Input of leakage current Reference voltage Ground Line input Neutral input SCR Trigger The Delay time
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO.
, LTD
www.
unisonic.
com.
tw
2 of 4
QW-R121-016.
C
GF2140
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (ILINE=1.
2mA, TA=25℃,RSET=290kΩ)
PARAMETER Shunt Regulator (PIN 5-4)
Regulator Voltage
Sense Amplifier (PIN 2-3) Offset Voltage Input Bias Current Gain Bandwidth SCR Trigger (PIN 7-6)
Output Voltage
Output Current Output Resistance Reference Voltage (PIN 3-4) Reference Voltage Delay Time (PIN 8-4) Delay Current Delay Time
SYMBOL
CONDITIONS
VREG
I2-3=11μA ILINE=700μA, I2-3=9μA
VI(OFF) II(BIAS)
fT
Design Value Design Value Design Value
VOUT
IOUT ZO
I2-3=9μA I2-3=11μA V7-6=0V, I2-3=11μA V5-6=open, I2-3=0
VREF ILINE=700μA
ID I2-3=11μA tD C8-4=20nF
MIN
6.
1 6.
1
-3.
0
0 1.
4 300 4.
0
2.
6
23
TYP MAX UNITS
6.
5 7.
5 6.
5 7.
5
V
0 15 3.
44
+3.
0 30
mV nA MHZ
0.
1 10 mV 2.
0 2.
6 V 420 600 μA 4.
7 5.
4 KΩ
2.
9 3.
4 V
30 43 μA 2.
0 ms
UNISONIC TECHNOLOGIES CO.
, LTD
www.
unisonic.
com.
tw
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