SG1544J MICROSEMI, SG1544J Datasheet

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SG1544J

Manufacturer Part Number
SG1544J
Description
Volt Supervisor Monitor 40V 18-Pin CDIP
Manufacturer
MICROSEMI
Type
Voltage Monitorr
Datasheet

Specifications of SG1544J

Package
18CDIP
Monitored Voltage
40 V
Operating Temperature
-55 to 125 °C
Minimum Reset Threshold Voltage
Adj
Maximum Supply Current
10000 uA
Number Of Supervisors
1
Watchdog Timer
No

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Rev 1.1a 3.19.2005
Copyright
DESCRIPTION
This device was designed to provide all the operational features of the SG1543/
2543/3543 devices but with the added advantage of uncommitted inputs to the
voltage sensing comparators. This allows monitoring of voltage levels less than
2.5 volts by dividing down the internal reference supply.
In all other respects, the SG1544 series is identical to the SG1543 series. These
monolithic devices contain all the functions necessary to monitor and control the
output of a sophisticated power supply system. Over-voltage sensing with
provision to trigger an external SCR “crowbar” shutdown; an under-voltage circuit
which can be used to monitor either the output or sample the input line voltage;
and a third op amp/comparator usable for current sensing are all included in this
IC, together with an independent, accurate reference generator.
The voltage-sensing input comparators are identical and can be used with
threshold levels from zero volts to (V
hysteresis which is offset so the switching differential threshold is zero on the non-
inverting input for rising levels and zero on the inverting input for falling signals.
All other operating characteristics are as described in the SG1543 data sheet and
application note.
BLOCK DIAGRAM
1994
IN
- 3V). Each has approximately 25mv of
LOW-VOLTAGE SUPERVISORY CIRCUIT
1
SG1544/SG2544/SG3544
FEATURES
HIGH RELIABILITY FEATURES
Uncommitted comparator inputs for
wide input flexibility
Common-Mode range from zero to near
supply voltage
Reference voltage trimmed to 1%
accuracy
Over-voltage, under-voltage, and current
sensing circuits all included
SCR "Crowbar" drive of 300mA
Programmable time delays
Open-collector outputs and remote
activation capability
Total standby current less than 10mA
- SG1544
Available to MIL-STD-883 and DESC
SMD
LMI level "S" processing available
11861 Western Avenue
(714) 898-8121
Garden Grove, CA 92841
FAX: (714) 893-2570
Microsemi Inc.

Related parts for SG1544J

SG1544J Summary of contents

Page 1

... Programmable time delays Open-collector outputs and remote activation capability Total standby current less than 10mA HIGH RELIABILITY FEATURES - SG1544 Available to MIL-STD-883 and DESC SMD LMI level "S" processing available Microsemi Inc. 11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570 ...

Page 2

ABSOLUTE MAXIMUM RATINGS Input Supply Voltage (+V ) ................................................ IN Sense Inputs ...................................................................... SCR Trigger Current ......................................... (Note 2) Indicator Output Voltage ..................................................... Note 1. Values beyond which damage may occur. Note 2. At higher input voltages, a dissipation limiting ...

Page 3

ELECTRICAL CHARACTERISTICS Parameter Comparator Section Input Threshold (Note 5) Input Hysteresis Input Bias Current Delay Saturation Delay High Level Delay Charging Current Indicate Saturation Indicate Leakage Propagation Delay SCR Trigger Section Peak Output Current Peak Output Voltage Output Off Voltage ...

Page 4

... CONNECTION DIAGRAMS & ORDERING INFORMATION Package Part No. 18-PIN CERAMIC DIP SG1544J/883B J - PACKAGE SG1544JDESC SG1544J SG2544J SG3544J SG2544N 18-PIN PLASTIC DIP N - PACKAGE SG3544N N Package: RoHS / Pb-free 100% Matte Tin lead Finish 18-PIN WIDE BODY SG2544DW PLASTIC S.O.I.C. SG3544DW DW - PACKAGE DW Package: RoHS / Pb-free 100% Matte Tin lead Finish Note 1 ...

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