【产品】只需4个外部器件支持的3A开关型降压稳压器LM2576,可提供降压开关稳压器的各种功能
华冠半导体推出的开关型降压稳压器LM2576系列,是单片集成电路,能提供降压开关稳压器(buck)的各种功能,能驱动3A的负载,优异的线性和负载调整能力。这些器件的固定输出电压有3.3V,5V,12V,15V,还有可调整输出的型号。这些稳压器内部含有频率补偿器和一个固定频率振荡器,将外部元件的数目减到最少,使用简便。
LM2576的效率比流行的三段线性稳压器要高的多,是理想的替代。一般情况下不需要或只要很小尺寸的外加散热片。已经优化可和LM2576一起使用的标准系列电感由好几个不同的电感生成商提供。此特征大大简化了开关电源的设计。
其它特征包括:在指定输入电压和输出负载条件下保证输出电压的±4%误差,以及振荡器频率的±10%误差。还包括外部的关断电路,特征有50μA(典型值)待机电流。
输出开关包括逐周限流,以及在故障状态下提供完全保护的热关断功能。
图 1 典型应用
特点
●3.3V,5V,12V,15V和可调节输出电压型号
●可调节输出型号输出电压范围在线性和负载条件下1.23~37V(HV型号57V)最大±4%
●保证3A输出电流
●输入电压范围广,40V至HV型号的60V
●只需4个外部器件支持
●52kHz固定频率内部振荡器
●TTL关断能力,低功耗待机模式
●高效率
●使用现成可用的标准电感
●热关断及电流限制保护
应用
●简单高效的降压稳压器(Buck稳压器)
●卡上开关稳压器
●正到负的变换器(Buck-Boost)
●负升压变换器
●为电池充电器做电源
●与National Semi.、On Semi.的LM2576完全互换
电气特性
表 1
封装外形图
订购信息
表
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本文由三年不鸣转载自华冠半导体,原文标题为:LM2576/LM2576HV 系列3A开关型降压稳压器,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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开关型降压稳压器LM2575,具有高效节能、稳定输出、小巧便捷和灵活可调等优点
在现代电子设备中,电源的性能对于产品的稳定性和用户体验至关重要。LM2575开关型降压稳压器凭借其高效节能、稳定输出、小巧便捷和灵活可调等优点,成为了提升电源性能的理想选择。
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【选型】ROHM(罗姆)DC/DC转换器选型指南(中文)
目录- 开关稳压器 BD9x降压转换器产品阵容&应用 降压转换器 降压控制器 绝缘型反击式转换器 单输出降压转换器 双输出降压转换器&降压控制器 升压转换器&升压控制器 绝缘型DC/DC电源
型号- BD9152MUV,BD9778HFP,BU90006GWZ,BD8961NV,BD95830MUV,BD9BXXX,BD9701CP-V5,BD9106FVM,BD9137MUV,BD91364BMUU,BD9A301MUV-LB,BD8312HFN,BD8311NUV,BD8967FVM,BD9E301EFJ-LB,RSD221N06,BU90003GWZ,BD9123MUV,BD9615MUV,BD9GXXX,BD9109FVM-LB,BU90009GWZ,BD9B301MUV-LB,BD9859EFJ,BD9161FVM,BD9109FVM,BD8963EFJ,BD9134MUV,BU90104GWZ,BD91501MUV,BA9741F,BD9F500QUZ,BD9326EFJ,BD83070GUL,BD7F200EFJ-LB,BD93291EFJ,BD9851EFV,BD9702CP-V5,BD9A600MUV,BD9B100MUV,BD8964FVM,BD9G102G-LB,BD9C301FJ,BD9106FVM-LB,BU90023NUX,BD9X,BD9E100FJ-LB,BD9141MUV,BD7F200HFN-LB,BD9D321EFJ,BD9110NV,BU33DV5G,BD8960NV,BU34DV7NUX,BD9A400MUV,BD9104FVM,BD9C501EFJ,BD9120HFN,BD9F800MUX,BD95841MUV,BD9B300MUV,BU33DV7NUX,BU90007GWZ,BD9EXXX,BD9306AFVM,BD95821MUV,BD9C301FJ-LB,BD9122GUL,BD9G201,BD9870FPS,BD8158FVM,BD9E101FJ-LB,BD8314NUV,BD9132MUV,BD9107FVM,BD9G401EFJ-M,BD91361MUV,BD9E104FJ,BD7F100HFN-LB,BD9227F,BD9703FP,BD9G341AEFJ,BU90004GWZ,BD9325FJ,BD8317GWL,BD9V101MUF-LB,BD95602MUV-LB,BD9FXXX,BD9111NV,BD9B500MUV,BU90054GWZ,BD9130EFJ,BD9A100MUV,BA9744FV,BD9E300EFJ-LB,BD9327EFJ,BD8152FVM,BD9325FJ-LB,BD9F800NUX,BA9743AFV,BD9B304QWZ,BD9C401EFJ,BD9A101MUV-LB,BD7J200HFN-LA,BD9B600MUV,BD95602MUV,BD9D300MUV,BU90005GWZ,BD9CXXX,BD9611MUV,BD9VXXX,BD8962MUV,BD9D323QWZ,BD9615MUV-LB,BU9006GUZ,BD9151MUV,BD9102FVM,BD95513MUV,BD95861MUV,BD9A302QWZ,BD0G401EFJ-M,BD9A300MUV,BD9E302EFJ,BD8313HFN,BD9G341AEFJ-LB,BD9B305QUZ,BD9B400MUV,BU90002GWZ,BD8303MUV,BD83854MUV,BD9874CP-V5,BU90008GWZ,BA9741FS,BD9DXXX,BD7J200EFJ-LA,BD9D322QWZ,BD9150MUV,BD9B200MUV,BD9139MUV,RSD221N06×3,BD95514MUV,BD9DXX,BD9326EFJ-LB,BD70522GUL,BD9G201EFJ-LB,BD9V101MUF,BU90028NUX,BD8306MUV,BD8316GWL,BD9E151NUX,BD9D320EFJ,BD9E303EFJ-LB,BD9703CP-V5,BD95500MUV,RB161VA-20,BD9AXXX,BD95831MUV,BD9B333GWZ,BD9873CP-V5,BD9G401,BU33UV7NUX,BD83854GWL,BD9327EFJ-LB,BD9A300,BD8966FVM,BD63536FJ,BD9305AFVM,BD89630EFJ,BD9E102FJ,BD9161FVM-LB,BD9C601EFJ,BD9G101G,BD7F100EFJ-LB,BD9130NV,BD9701FP
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