WMSIC Electronic Components

TECH PUBLIC LM2596HVS-ADJ LM2596HVS

ModelLM2596HVS-ADJ
PackageTO-263-5
BrandTECH PUBLIC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC LM2596HVS-ADJ
Type
TECH PUBLIC
Minimum package
800 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
LM2596HVS-ADJ
Electronic Component
1
Package
TO-263-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
1.971g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0230027721
Operating Temperature
40℃~+125℃@(TJ)
Operating Voltage
4.5V~60V
Switching Frequency
120kHz~180kHz
Electronic Component
Electronic Component
Output Voltage
1.23V~57V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

LM2596HVS-ADJ 产品概述

LM2596HVS-ADJ 是 TECH PUBLIC(台舟电子)推出的一款降压型开关稳压器,采用降压(Buck)拓扑、内置开关管、可调输出,适用于宽输入电压范围的高效电源设计。器件封装为 TO-263-5,单通道输出,专为需要较高输入电压兼容性与中等电流输出(最高 3A)的场合设计。

一、主要功能与特点

  • 功能类型:降压型开关稳压器(可调输出)。
  • 输入电压范围:4.5V ~ 60V,适合汽车、工业及其它高电压工况。
  • 输出电压范围:1.23V ~ 57V(通过外部分压电阻设定)。
  • 输出电流:最大 3A(在适当散热条件下)。
  • 开关频率:约 120kHz ~ 180kHz,典型值约 150kHz,有利于在效率与外设体积间取得平衡。
  • 同步整流:否(需配外接肖特基二极管作为续流二极管)。
  • 静态电流 (Iq):约 8mA(待机损耗低,但非超低功耗器件)。
  • 内置开关管:是(简化外部元件,便于设计)。
  • 工作温度:-40℃ ~ +125℃(结温 TJ 范围)。
  • 封装:TO-263-5(有利于散热与功率处理)。

二、典型电气说明

LM2596HVS-ADJ 内部参考电压为 1.23V,输出电压通过外部分压电阻 R1、R2 按 Vout = Vref × (1 + R2/R1) 调整。由于器件非同步整流,外接肖特基二极管的选择直接影响效率与散热。开关频率在 120–180kHz 范围内,可在组件尺寸与电磁干扰之间权衡。

三、应用场景

  • 汽车电子与车载电源(宽输入电压适配)。
  • 工业控制与测控设备。
  • 通信设备、网通基础设施电源。
  • 单板电源模块、实验与小批量定制电源。

四、设计要点与注意事项

  • 必须外接低损耗肖特基二极管(快速恢复或超快肖特基)以承受开关峰值电流与热应力。
  • 输入电容与输出电容需选用低 ESR 的电解或固态铝电解/钽电容以降低纹波并稳定环路。
  • 为保证稳定性与瞬态响应,按参考设计选择合适电感(根据输出电流与开关频率计算)与输出电容。
  • 布局要点:输入侧电容尽量靠近器件 VIN 与 GND 引脚,开关节点走线短且宽,避免环路面积过大以减少 EMI。
  • 散热:在高输入电压或大电流工况下需足够散热,建议配合大面积 PCB 散热铜箔或外加散热片。

五、典型外围元件建议

  • 续流二极管:肖特基,峰值反向耐压高于最大输入电压余量。
  • 电感:按峰值电流与电流纹波需求选择,需考虑饱和电流裕量。
  • 输出电容:低 ESR,耐温等级高,容量按输出纹波与稳定性需求选取。
  • 反馈电阻:高精度电阻以保证输出精度,注意功耗与热漂移。

六、可靠性与测试

该器件工作温度覆盖工业级范围(-40℃~+125℃),在实际应用中建议通过热仿真与样机测试验证结温与长期可靠性,特别是在连续 3A 输出与高输入电压下的热耗散与封装温升。

总结:LM2596HVS-ADJ 在宽输入电压、可调输出和较高输出电流场景下具有良好的适用性。合理选择外部肖特基二极管、电感与电容并做好 PCB 布局与散热设计,可获得高效稳定的电源解决方案。

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