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參數資料
| 型號： | SG1544 |
| 廠商： | Microsemi Corporation |
| 英文描述： | LOW-VOLTAGE SUPERVISORY CIRCUIT |
| 中文描述： | 低電壓監控電路 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 41K |
| 代理商： | SG1544 |
SG1544/SG2544/SG3544
4/90 Rev 1.1 2/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
∞
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
1
LOW-VOLTAGE SUPERVISORY CIRCUIT
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
HIGH RELIABILITY FEATURES
- SG1544
Available to MIL-STD-883 and DESC
SMD
LMI level "S" processing available
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
- 3V). Each has approximately 25mv of
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
相關PDF資料 |
PDF描述 |
|---|---|
| SG1544J | LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG3544DW | LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG3544 | LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG2548 | QUAD POWER FAULT MONITOR |
| SG2548DW | QUAD POWER FAULT MONITOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SG1544_1 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG1544J | 制造商:Microsemi Corporation 功能描述:PWR SUPPLY-PREC. OUTPUT SPVSRY. CIRCUIT - Bulk |
| SG1544J/883B | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG1544J-883B | 制造商:Microsemi Corporation 功能描述:VOLT SUPERVISOR MONITOR 18CDIP - Rail/Tube 制造商:Microsemi Corporation 功能描述:IC SUPERVISOR 2.5V 25MA 18-JDIP |
| SG1544JDESC | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:LOW-VOLTAGE SUPERVISORY CIRCUIT |
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