DESCRIPTION

The SG3546 is an undervoltage sensing circuit specifically designed for use as a reset controller in 3.3V microprocessorbased applications. Its micropower operation makes this device ideal for portable applications where extended battery life is required. The device offers a 1.2V temperature compensated bandgap reference, a precision comparator with hysteresis and a high-current open collector output. This device operates from 1 to 10V input supply and drains

KEY FEATURES

■ LOW STANDBY CURRENT

■ INTERNAL VOLTAGE

THRESHOLD AT 2.95V

■ TEMPERATURE

COMPENSATED BANDGAP

REFERENCE

■ PRECISION COMPARATOR

WITH 40MV OF HYSTERESIS

■ CLAMP DIODE FOR

DISCHARGING DELAY

CAPACITOR

■ OUTPUT CURRENT SINK

CAPABILITY (typ 5mA)

■ 1-10V INPUT SUPPLY RANGE

■ AVAILABLE IN 150MIL, 8-PIN

SOIC AND 3-PIN TO-92

PACKAGES