TECHNICAL DATA
IL4145A
Low Power Ground Fault Interrupter
The IL4145AN is a low power controller for AC outlet ground fault
interrupters. These devices detect hazardous grounding conditions, such as
equipment (connected to opposite phases of the AC line) in contact with a
pool of water and open circuits the line before a harmful or lethal shock
occurs.
Contained internally are a 26V zener shunt regulator, an op amp, and an
SCR driver. With the addition of two sense transformers, a bridge rectifier,
an SCR, a relay, and a few additional components, the IL4145AN will
detect and protect against both hot wire to ground and neutral wire to
ground faults. The simple layout and conventional design ensure ease of
application and long-term reliability.
ORDERING INFORMATION
No potentiomenter required
Direct interface to SCR
Supply voltage derived from AC line – 26V shunt
Adjustable sensitivity
Grounded neutral fault detection
Meets U.L. 943 standards
450 µA quiescent current
IL4145AN Plastic DIP
IL4145AD
SOIC
TA = -35° to 85° C for all packages.
Ideal for 120 V or 220 V systems
BLOCK DIAGRAM
VFB
PIN ASSIGNMENT
+
R1
VFB
+Input
VREF
1
2
3
4
NC
8
7
6
5
10K
+Input
Op Amp Output
Op Amp Output
+VS
R2
10K
SCR Trigger
+VS
GND
VREF
(+26V)
6.5 V 6.5 V
6.5 V 6.5 V
(+13V)
+
+
Ground
SCR Trigger
R3
4.7K
ABSOLUTE MAXIMUM RATINGS
Symbol
ICC
Parameter
Value
18
500
Unit
mA
mW
°C
°C
°C
°C
mW
mW/°C
Supply Current
PD
Internal Power Dissipation
Storage Temperature Range
Operating Temperature Range
Junction Temperature
Lead Temperature
Tstg
Topr
TJ
-65 to +150
-35 to +85
125
125
450
6
TL
TA< 50°C
For TA> 50°C Derate at
PD
INTEGRAL [ INTEGRAL CORP. ]
