GFCI Controllers | NCS37020

Self-Test Appliance Leakage Circuit Interrupter (ALCI)

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Overview

The NCS37020 is an UL943B compliant signal processor for ALCI applications with self-test. The device integrates a 12 V shunt power supply, tiered differential fault detection and self-test per the UL943B standard. Self-test is monitored at start up and every 12 minutes.

  • Personal Care Products
  • Non Grounded Neutral Electrical Outlets, Circuit Breakers and Power Cords Requiring Ground Fault Safety Features
  • ALCI and RCCB Circuits

  • Hair dryers
  • Hair curlers
  • Electronic appliances with water proximity

  • Meets UL943B Self−test ALCI Requirements
  • 12 V Shunt Regulator
  • Precision Bandgap
  • 3.3 V LDO Linear Regulator
  • CT Sense Amplifier Vos Dynamic Cancellation
  • Oscillator Frequency Trimmed to AC Input
  • Tiered GF Trip Times
  • Built−In Noise Filter
  • LED EOL Indicator
  • SCR Gate Driver
  • Minimum External Components
  • Adjustable Sensitivity
  • Low Quiescent Current
  • 14 Pin TSSOP Package

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NCS37020DTBR2G

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CAD Model

Pb

A

H

P

TSSOP-14 WB

948G

3

260

REEL

2500

Y

~NA~

~NA~

13

10

~NA~

0

70

$0.3825

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Die Related Summary Data

Device: NCS37020DTBR2G

Equivalent to wafer fab process: ONC18

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FITS

ONC18

2

6465777234

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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