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NCS37020 - Self-Test Appliance Leakage Circuit Interrupter

Description

Pin # Name Pad Description 1 SCR Test SCR test input for SCR functionality 2 CTB Differential current transformer bias voltage 3 CTS Differential current signal input 4 CTO Differential current to voltage output 5 IDF Differential low pass filter/ADC input 6 REF 3.3 V Internal r

Features

  • 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.
  • Adjustable Sensitivity.
  • Minimum External Components.
  • Low Quiescent Current.
  • 14.

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Datasheet Details

Part number NCS37020
Manufacturer onsemi
File Size 343.30 KB
Description Self-Test Appliance Leakage Circuit Interrupter
Datasheet download datasheet NCS37020 Datasheet

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Full PDF Text Transcription

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Self-Test Appliance Leakage Circuit Interrupter (ALCI) NCS37020 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. Features • Meets UL943B Self−test ALCI Requirements • 12 V Shunt Regulator • Precision Bandgap • 3.
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