SG3546_1 Datasheet, PDF (1/7 Pages) Microsemi Corporation – 3.3V UNDERVOLTAGE SENSING CIRCUIT

THE INFINITE POWER OF INNOVATION
SG3546
3.3V UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
DESCRIPTION
The SG3546 is an undervoltage sensing hysteresis and a high-current open collector
circuit specifically designed for use as a output. This device operates from 1 to 10V
reset controller in 3.3V microprocessor- input supply and drains <10µA in the non-
based applications. Its micropower fault condition. The SG3546 is available in
operation makes this device ideal for an 8-pin 150mil SOIC package or a 3-pin
portable applications where extended TO-92 package and is rated for an ambient
battery life is required. The device offers a temperature of 0°C to 70°C.
1.2V temperature compensated bandgap
reference, a precision comparator with
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
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
PRODUCT HIGHLIGHT
LOW-VOLTAGE MICROPROCESSOR RESET
2
POWER
SUPPLY
R
1
RESET MICROPROCESSOR
CIRCUIT
C_DLY
1.2 V_REF
3
T_A (°C)
PACKAGE ORDER INFO
Plastic SOIC
DM _8-Pin
Plastic TO-92
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)
Copyright © 1994
Rev. 1.3a,2005-03-09
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: [phone]
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