WMSIC Electronic Components

HGSEMI LM2576HVS-12/TR LM2576HVS

ModelLM2576HVS-12/TR
PackageTO-263-5
BrandHGSEMI
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
HGSEMI LM2576HVS-12 / TR
Type
HGSEMI
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LM2576HVS-12/TR
Electronic Component
1
Package
TO-263-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
1.72g
Electronic Component
1
Type
Electronic Component
Electronic Component
BM0227677188
Operating Temperature
40℃~+125℃
Operating Voltage
60V
Switching Frequency
52kHz
Electronic Component
Electronic Component
Output Voltage
12V
Output Current
3A

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

LM2576HVS-12/TR 产品概述

一、产品简介

LM2576HVS-12/TR 为一款降压(Buck)型开关稳压器,内置功率开关,适用于从高压直流输入降压到固定 12V 输出、最大输出电流 3A 的电源设计。该器件工作频率约 52kHz,静态工作电流仅 约 5mA,适合需要高效率与低静态损耗的工业与通信电源场合。器件支持宽输入电压(最高 60V),工作温度范围 -40°C 至 +125°C,单通道输出,封装为 TO-263-5(D2PAK)便于散热与 PCB 组装。品牌标示:HGSEMI(华冠)。

二、主要性能参数

  • 拓扑结构:降压型(Buck)
  • 输入电压:最高 60V(建议按实际系统余量选型)
  • 输出电压:固定 12V
  • 输出电流:最大 3A
  • 开关频率:约 52kHz
  • 静态电流(Iq):约 5mA
  • 开关管:内置功率开关(简化外围电路)
  • 输出通道:1 路
  • 工作温度:-40℃ ~ +125℃
  • 封装:TO-263-5(利于散热)
  • 适用场景:汽车电子、工业控制、通信设备、电源模块等

三、功能特点

  • 内置高电流开关,减少外部功率器件数量,简化电路设计与装配;
  • 支持高达 60V 的输入,适合高电压输入环境或大输入波动场合;
  • 低静态电流,系统空载或待机时功耗小;
  • 固定 12V 输出,适合为 12V 负载供电,外部仅需按照参考电路配置电感、电容与续流二极管;
  • 具备过流限制与热关断等保护特性(提高系统可靠性);
  • 工作频率适中(~52kHz),在效率和外设元件体积间取得平衡。

四、典型应用

  • 工业控制电源与驱动模块;
  • 通信基站和网络设备的辅助电源;
  • 汽车电子(在允许的电磁兼容设计下);
  • 仪器仪表、工控机箱内的 12V 供电;
  • 各类板载降压模块与电源转换器。

五、封装与热管理

TO-263-5 封装具备较好的导热路径,建议在 PCB 设计时:

  • 在器件底部及散热引脚处布置足够的散热铜箔和过孔,形成良好的热通道;
  • 评估器件在最大负载与高环境温度下的功耗,并考虑外加散热片或增强散热措施;
  • 保证散热面积与通风条件,以避免热关断影响稳定输出。

六、设计与布局建议

  • 输入端放置低 ESR 的去耦电容,尽量靠近器件 VIN 与 GND 引脚;
  • 续流二极管(推荐 Schottky)应靠近开关节点与输出放置,减小开关回路面积;
  • 输出电容选择耐压与低 ESR 类型(电解+固态/钽或固态电容混合),保证瞬态响应与低纹波;
  • 开关节点走线尽量短且宽,减小寄生电感,避免辐射干扰;
  • 对于汽车或高噪声环境,增加输入侧滤波与适当的抑制网络(共模电感、RC 滤波等)。

七、可靠性与环境指标

  • 额定工作温度 -40℃ 至 +125℃,适配多数工业级环境;
  • 内置保护(限流、热关断)提高系统鲁棒性;
  • 在高温或高输入电压工况下,应做热仿真与可靠性评估,保证长期稳定运行。

八、结论

LM2576HVS-12/TR 提供了一种简洁、可靠的高压降压解决方案,适合需要从高电压源向 12V/3A 负载供电的场合。其内置开关与保护机制减少了外部元件的复杂性,TO-263-5 封装利于散热,但在实际设计中需重视版图布局、外部被动件的选型与热管理,以确保在各类工况下保持高效率与长期可靠性。

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