IL4145A Datasheet, PDF (1/7 Pages) Integral Corp. – Low Power Ground Fault Interrupter

TECHNICAL DATA
Low Power Ground Fault Interrupter
IL4145A
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.
ƒ No potentiomenter required
ƒ Direct interface to SCR
ƒ Supply voltage derived from AC line – 26V shunt
ƒ Adjustable sensitivity
ƒ Grounded neutral fault detection
ƒ Meets U.L. 943 standards
ƒ 450 µA quiescent current
ƒ Ideal for 120 V or 220 V systems
ORDERING INFORMATION
IL4145AN Plastic DIP
IL4145AD SOIC
T_A = -35° to 85° C for all packages.
BLOCK DIAGRAM
V_FB
+Input
V_REF
(+13V)
+
R1
10K
R2
10K
6.5 V 6.5 V
+
6.5 V 6.5 V
+
PIN ASSIGNMENT
Op Amp Output
+V_S
(+26V)
V_FB 1
+Input 2
V_REF 3
GND 4
8 NC
7 Op Amp Output
6 +V_S
5 SCR Trigger
Ground
R3
4.7K
SCR Trigger
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
I_CC
Supply Current
P_D
Internal Power Dissipation
Tstg Storage Temperature Range
Topr Operating Temperature Range
T_J
Junction Temperature
T_L
Lead Temperature
P_D
T_A< 50°C
For T_A> 50°C Derate at
Value
18
500
-65 to +150
-35 to +85
125
125
450
6
Unit
mA
mW
°C
°C
°C
°C
mW
mW/°C