SG3546-2| Datasheet

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SG3546
3.3V UNDERVOLTAGE SENSING CIRCUIT
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N N O V A T I O N

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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 <10uA in the nonfault condition. The SG3546 is available in an 8-pin 150mil SOIC package or a 3-pin TO-92 package and is rated for an ambient temperature of 0 C to 70 C.

IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com

PRODUCT HIGHLIGHT

L OW -V OLTAGE M ICROPROCESSOR R ESET
2 1 POWER SUPPLY R RESET CDLY MICROPROCESSOR CIRCUIT

1.2 VREF

TA ( C)

PACKAGE ORDER INFO Plastic SOIC Plastic TO-92 DM 8-Pin LP 3-Pin
RoHS Compliant / Pb-free Transition DC: 0440 RoHS Compliant / Pb-free Transition DC: 0509

0 to 70

SG3546DM

SG3546LP

Note: Available in Tape & Reel. Append the letters "TR" to the part number. (i.e. LX3546DM-TR)

LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570