NCP302

Features:

Quiescent Current of 0.5 A Typical
High Accuracy Undervoltage Threshold of 2.0%
Externally Programmable Time Delay Generator
Wide Operating Voltage Range of 0.8 V to 10 V
Complementary or Open Drain Output
Active Low or Active High Reset
Pb−Free Packages are Available


Application

Microprocessor Reset Controller
Low Battery Detection
Power Fail Indicator
Battery Backup Detection


Pinout




Specifications

Rating	Symbol
Input Power Supply Voltage (Pin 2)	Vin	Vin	V
Delay Capacitor Pin Voltage (Pin 5)	VCD	-0.3 to Vin + 0.	V
Output Voltage (Pin 1) Complementary, NCP302 N-Channel Open Drain, NCP303	VOUT	-0.3 to Vin + 0.3 -0.3 to 12	V
Output Current (Pin 1) (Note 2)	IOUT	70	mA
Thermal Resistance Junction-to-Air	R_JA	250	°C/W
Maximum Junction Temperature	TJ	+125	°C
Operating Ambient Temperature Range	TA	-40 to +85	°C
Storage Temperature Range	Tstg	-55 to +150	°C
Moisture Sensitivity Level (TA = 235°C)	MSL	1
Latchup Performance Positive Negative	ILATCHUP	200	mA

Description

The NCP302 and NCP303 series are second generation ultra−low current voltage detectors that contain a programmable time delay generator. These NCP302 and NCP303  devices are specifically designed for use as reset controllers in portable microprocessor based systems where extended battery life is paramount.

Each NCP302 and NCP303  series features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator. This combination of features prevents erratic system reset operation.The NCP302 series consists of complementary output devices that are available with either an active high or active low reset. The NCP303 series has an open drain N−Channel output with an active low reset output.