Self Test GFCI controller compliant with UL943

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Overview

The NCS37014 is a UL943 compliant signal processor for GFCIapplications with self test. The device integrates a flexible powersupply (including a 12 V shunt and two 3.3 V internal seriesregulators), differential fault, and grounded−neutral detection circuits.Self test is monitored at start up and then every 17 minutes.

  • UL943 compliant GFCI products with self test
  • GFCI receptacles
  • GFCI circuit breakers
  • Portable GFCI products
  • Auto monitoring test function required by UL943
  • Self syncing internal oscillator adjusts to AC mains frequency to guarantee full resolution
  • Typical 575 µA Quiescent Current @ 11 V
  • Tiered trip times by the level of ground fault
  • Under voltage detection

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Compliance

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VCC Min (V)

VCC Max (V)

IT Max (mA)

VI Typ (V)

TA Min (°C)

TA Max (°C)

Reference Price

NCS37014MNTWG

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Active

CAD Model

Pb

A

H

P

QFN-16

3

260

REEL

3000

Y

1

3

3.6

2.2

1.65

-40

95

$0.575

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