onsemi NCS37021
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.| Part No. | NCS37021 |
|---|---|
| Datasheet | NCS37021 Download |
| Manufacturer |  onsemi |
| Description | Self-Test Ground Fault Circuit Interrupter |
| Buy | Stock & Price |
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) DATA SHEET QFN16 CASE 485FQ MARKING DIAGRAM 37021 ALYW 37021 A L Y W = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week PIN CONNECTIONS SCR GFT LED DRF CTG SCM CTB CTS SUP AUX MLD PTT CTO IDF REF GND (Top View...
