SG1543数据手册集成电路（IC）的监控器规格书PDF

描述 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 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. 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.Microchip Ordering Part Standard Microcircuit Drawing (SMD) SG1543J-DESC Cross Reference 5962-8774001EASG1543J-DESC Cross Reference 5962-8774001EX

特性 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

简介

SG1543属于集成电路（IC）的监控器。由制造生产的SG1543监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。