Datasheet > SG1543

SG1543

更新时间： 2023-12-06 20:02:54

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
9页	535K
描述
This monolithic integrated circuit contains all the functions necessary to monitor and control the

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SG1543 数据手册

SG1543/SG2543/SG3543

Power Supply Output Supervisory Circuit

Features

Over-Voltage, Under-Voltage, and

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.

Current Sensing Circuits all included.

Reference Voltage Trimmed to 1%

Accuracy.

SCR "Crowbar" Drive of 300mA.

. Programmable Time Delays.

Both over and under-voltage sensing circuits can be externally

programmed for minimum 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.

Open-Collector Outputs and Remote

Activation Capability.

Total Standby Current less than 10mA.

High Reliability

Features

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.

Available to MIL-STD-883, ¶ 1.2.1

. MSC-AMS level “S” Processing

Available

. Available to DSCC

– Standard Microcircuit Drawing (SMD)

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

February 2015 Rev. 1.2

www.microsemi.com

12 3 4 5 6 7...9

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与SG1543相关器件

型号	品牌	获取价格	描述	数据表
SG1543_1	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J/883B	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543J/DESC	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L/883B	MICROSEMI	获取价格	POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT
SG1543L/DESC	MICROSEMI	获取价格	Power Supply Support Circuit
SG1544	MICROSEMI	获取价格	LOW-VOLTAGE SUPERVISORY CIRCUIT
SG1544	MICROCHIP	获取价格	This device was designed to provide all the operational features of the SG1543 device with
SG1544_1	MICROSEMI	获取价格	LOW-VOLTAGE SUPERVISORY CIRCUIT