SG3546
3.3V UNDERVOLTAGE SENSING CIRCUIT
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DESCRIPTION
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
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
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