NCS37010 Series

Ground Fault Circuit Interrupter (GFCI) with Self Test and Lockout

Catalog

Ground Fault Circuit Interrupter (GFCI) with Self Test and Lockout

Part	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply	Supplier Device Package	Mounting Type	Package / Case [y]	Package / Case	Package / Case [x]	Voltage - Supply [Max]	Voltage - Supply [Min]	Applications
ON Semiconductor NCS37010DBRG	85 °C	-40 °C	2 mA	20-TSSOP	Surface Mount	4.4 mm	20-TSSOP	0.173 in	12 V	6 V	Ground Fault Protection
ON Semiconductor NCS37010MNG	85 °C	-40 °C	2 mA	16-QFN (3x3)	Surface Mount		16-VFQFN Exposed Pad		12 V	6 V	Ground Fault Protection

Catalog

Ground Fault Circuit Interrupter (GFCI) with Self Test and Lockout

Key Features

• Full self test and electronic lockout

• Self syncing internal oscillator adjusts to AC mains frequency to guarantee full resolution on 50 and 60 Hz distribution systems

• Randomized testing sequence to noise sensitivity and potential interactions on the AC mains

• High SCR drive current (up to 5 mA)

Description

The NCS37010 is a fully UL943 compliant signal processor for GFCI applications with self test and lockout. The device integrates a flexible power supply (including both shunt and LDO regulators), differential fault, and grounded-neutral detection circuits. Proprietary impedance measurement and signal processing techniques are used to minimize the number of external components and improve performance. The device also includes a specialized DSP controller that offers best in class immunity to nuisance loads without the need for external analog filters. At power up the NCS37010 performs a self test at 60ms and removes the lockout if the test passes. This self test consists of a differential, ground-neutral and solenoid test.