SG1549中文资料Current Sense Latch, Current Sensing with 100mVThreshold 55C to 125C数据手册Microchip规格书

描述 Description

This monolithic integrated circuit is an analog latch device with digital reset. It was specifically designed to provide pulse-by-pulse current limiting for switch-mode power supply systems, but many other applications are also feasible. Its function is to provide a latching switch action upon sensing an input threshold voltage, with reset accomplished by an external clock signal. This device can be interfaced directly with many kinds of pulse width modulating control IC's, including the SG1524, SG1525A, and SG1527A. The input threshold for the latch circuit is 100mV, which can be referenced either to ground or to a wide-ranging positive voltage. There are high and low-going output signals available, and both the supply voltage and clock signal can be taken directly from an associated PWM control chip. With delays in the range of 200 nanoseconds, this latch circuit is ideal for fast reaction sensing to provide overall current limiting, short circuit protection, or transformer saturation control.Microchip Ordering Part  Standard Microcircuit Drawing (SMD) SG1549Y-DESC Cross Reference 5962-8684901PASG1549Y-DESC Cross Reference 5962-8684901PX

特性 Features

Current Sensing with 100mV Threshold
Common-mode Input at Ground or to 40V
Complementary Outputs Automatic Reset from PWM Clock
180ns Delay
Interface Direct to SG1524, SG1525A, SG1527A

简介

SG1549属于集成电路（IC）的监控器。由制造生产的SG1549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。