GROUND FAULT INTERRUPTER

DESCRIPTION

The UTC GF4149 is a low-power controller for detecting

hazardous current paths to ground and ground-to-neutral faults.

The UTC GF4149 application circuit opens the load contacts

before a harmful shock occurs.

The UTC GF4149 contains a precision bandgap 14V shunt

regulator, precision low-V OS sense amplifier, time-delay noise

filter, window-detection comparators, and an SCR driver. The

SCR driver provides increased current and temperature

compensation to allow for a wider selection of external SCRs.

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FEATURES

* Precision Sense Amplifier and Bandgap Reference

* Low-V OS Offset

* Built-in Noise Filter

* High-Current SCR Gate Driver

* Adjustable Sensitivity

* Low Quiescent Current

* Minimum External Components

* Ideal for 120V or 220V Systems