降压式 DC-DC
功能特点
产品名称:降压式 DC-DC
产品型号:LM2576
产品描述:
The LM2576 series of regulators are monolithic integratedcircuits that provide all the active functions for a step-down(buck) switching regulator, capable of driving 3A load withexcellent line and load regulation. These devices are availableinfixedoutputvoltagesof3.3V,5V,12V,andanadjustable output version.Requiring a minimum number of external components, theseregulators are simple to use and include internal frequencycompensation and a fixed-frequency oscillator.The LM2576 series offers a high-efficiency replacement forpopular three-terminal linear regulators. It substantially reducesthe size of the heat sink, and in some cases no heatsink is required.A standard series of inductors optimized for use with theLM2576 are available from several different manufacturers.This feature greatly simplifies the design of switch-modepower supplies.Other features include a guaranteed ±4% tolerance on outputvoltage within specified input voltages and output loadconditions, and ±10% on the oscillator frequency. Externalshutdown is included, featuring 50μA (typical) standby current.The output switch includes cycle-by-cycle current limiting,as well as thermal shutdown for full protection underfault conditions
参数:
Maximum Supply Voltage 45V
ON /OFF Pin Input Voltage ?0.3 £ V £ +25V
Feedback Pin Voltage ?0.3 £ V £+25V
Output Voltage to Ground(Steady State) ?1V
Power Dissipation Internally limited
StorageTemperatureRange ?65°Cto+150°C
ESD Susceptibility HumanBodyModel 2Kv
Lead Temperature
S Package
Vapor Phase (60 sec.) +215°C
Infrared (10 sec.) +245°C
T Package (Soldering, 10 sec.) +260°C
Maximum Junction Temperature +150°C
封装: TO-220 TO-263
热搜元器件
电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved