NCS37021MNTWG中文資料安森美半導體數(shù)據(jù)手冊PDF規(guī)格書

The NCS37021 is a UL943 compliant signal processor for GFCI

applications with self?test. The device integrates a flexible power

supply (including a 12 V shunt, two 3.3 V internal series

regulators and a 1.8 V internal regulator), differential fault,

and grounded?neutral detection circuits. Self?test is monitored at start

up and then every minute.

Features

? Meets UL943 Self?test GFCI Requirements

? 4.0 – 12 V Operation

(120?480 V AC Mains with the Appropriate Series Impedance)

? Wide Operating Temperature Range from 40°C to 95°C

? Low Quiescent Current

? Optimized Solenoid Deployment

(Coil is not Energized Near the AC Mains Zero Crossings)

? Power Supply Monitor that Verifies Full Diode Bridge Operation

? Tiered GF Trip Times that Increase Immunity to Noise

? Under?voltage Detection that Allows for Increased Operation at

Lower AC Input Voltages

? Intelligent Sensing Differentiating Ground Fault versus Ground

Neutral Fault (Prevent Nuisance Tripping)

? 16 Pin QFN Package

? This is a Pb?Free Device

Typical Applications

? GFCI Receptacles

? Load Panel GFCI Breakers

? In?line GFCI Circuits (Power Cords)