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TECHNICAL DATA
Low Power Ground Fault Interrupter
The KK4145AN is a low power controller for AC ou...
www.DataSheet4U.com
TECHNICAL DATA
Low Power Ground Fault Interrupter
The KK4145AN 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 KK4145AN 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.
No potentiomenter required
KK4145A
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 Ideal for 120 V or 220 V systems
ORDERING INFORMATION KK4145AN Plastic DIP KK4145AD SOIC TA = -35° to 85° C for all packages.
BLOCK DIAGRAM
VFB
PIN ASSIGNMENT
+
R1 10K R2 10K
VFB
Op Amp Output
1 2 3 4
8 7 6 5
NC Op Amp Output +VS SCR Trigger
+Input
+Input VREF
VREF (+13V)
6.5 V
6.5 V
6.5 V
6.5 V
+VS (+26V)
GND
+
Ground R3 4.7K
+
SCR Trigger
ABSOLUTE MAXIMUM RATINGS
Symbol ICC PD Tstg Topr TJ TL PD Parameter Supply Current Internal Power Dissipation Storage Temperature Range Ope...
