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參數資料
| 型號： | SG1543L |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 118K |
| 代理商： | SG1543L |
SG1543/SG2543/SG3543
11/91 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
POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
FEATURES
Over-voltage, under-voltage, and
current sensing circuits all
included
Reference voltage trimmed to 1%
accuracy
SCR "Crowbar" drive of 300mA
Programmable time delays
Open-collector outputs and
remote activation capability
Total standby current less than
10mA
HIGH RELIABILITY FEATURES
- SG1543
Available to MIL-STD-883 and
DESC SMD
LMI level "S" processing avail-
able
DESCRIPTION
This monolithic integrated circuit contains all the functions necessary to monitor and
control the output of a sophisticated power supply system. Over-voltage (O.V.) sensing
with provision to trigger an external SCR “crowbar” shutdown; an under-voltage (U.V.)
circuit which can be used to monitor either the output or to sample the input line voltage;
and a third op amp/comparator usable for current sensing (C.L.) are all included in this
IC, together with an independent, accurate reference generator.
Both over and under-voltage sensing circuits can be externally programmed for mini-
mum time duration of fault before triggering. All functions contain open collector outputs
which can be used independently or wire-ORed together; and although the SCR trigger
is directly connected only to the over-voltage sensing circuit, it may be optionally
activated by any of the other outputs, or from an external signal. The O.V. circuit also
includes an optional latch and external reset capability.
The current sense circuit may be used with external compensation as a linear amplifier
or as a high gain comparator. Although nominally set for zero input offset, a fixed
threshold may be added with an external resistor. Instead of current limiting, this circuit
may also be used as an additional voltage monitor.
The reference generator circuit is internally trimmed to eliminate the need for external
potentiometers and the entire circuit may be powered directly from either the output being
monitored or from a separate bias voltage.
BLOCK DIAGRAM
相關PDF資料 |
PDF描述 |
|---|---|
| SG3543J | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG3543N | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG3543 | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG2543 | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG2543DW | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SG1543L/883B | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG1543L-883B | 制造商:Microsemi Corporation 功能描述:POWER SUPPLY - PRECISION OUTPUT SUPERVISORY CIRCUIT - Bulk |
| SG1544 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:LOW-VOLTAGE SUPERVISORY CIRCUIT |
| 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 |
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