Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
HGSEMI LM2576T-5.0 LM2576T
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM2576T-5.0
- Type
- TO-220-5
- Minimum package
- 1000 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- LM2576T-5.0
- Electronic Component
- 1
- Package
- TO-220-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 3g
- Electronic Component
- 1
- Type
- Electronic Component
- Electronic Component
- BM0227687398
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 40V
- Switching Frequency
- 52kHz
- Electronic Component
- Electronic Component
- Output Voltage
- 5V
- Output Current
- 3A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM2576T-5.0 产品概述
一、产品简介
LM2576T-5.0 是一款集成开关管的降压型（Buck）开关稳压器，提供固定 5.0V 输出，最大输出电流 3A，最大输入电压可达 40V，典型开关频率约 52kHz。器件静态工作电流低（约 5mA），工作结温范围宽（-40℃ 到 +125℃），单通道输出，封装为 TO-220-5，适用于对效率、散热和电流能力有一定要求的中等功率点应用。
二、主要特性
- 输入电压范围最高 40V，适配多种直流电源场景。
- 固定 5V 输出，最大连续输出电流 3A。
- 内置开关管，简化外部设计与布局。
- 开关频率约 52kHz，兼顾效率与外部元件体积。
- 低静态电流（Iq ≈ 5mA），在轻载条件下功耗较低。
- 内置限流与热关断保护，提高系统可靠性。
- 封装：TO-220-5，便于散热片安装与散热管理。
三、典型应用场景
- 工业控制、嵌入式系统的 5V 电源模块。
- 通讯设备、仪器仪表的点位供电。
- 消费类电子的中等功率降压电源。
- 电源板、电源模块和参考设计中的前端稳压模块。
四、设计要点与建议
- 外围元件：需搭配合适电感、肖特基二极管与输入/输出电容。外部电感须满足≥3A 电流额定且尽量低 DCR，肖特基二极管要快速且低压降。
- 电容选择：输入端建议大容量电解或固态电容以抑制输入纹波，并在靠近器件处并联 0.1µF 陶瓷旁路电容以滤高频噪声；输出侧选用低 ESR 电容以降低输出纹波。
- 布局与走线：开关回路（开关管、二极管、电感、输入/输出电容）应尽量靠近，走短粗铜线以降低寄生电感和热耗。把敏感反馈线远离开关节点，以免干扰。
- 散热考虑：TO-220-5 封装便于外接散热片，典型在高负载或高差压条件下需良好散热，保证结温低于额定上限。
- 保护与可靠性：利用器件内置限流与热关断保护；在设计中预留过流、短路保护与热管理余量。
五、性能与效率
效率受输入电压、输出电流与外部元件选型影响显著。典型效率在中等输入电压差时可达 80% 以上，但在高 Vin 或接近最大输出电流时需关注发热与散热措施。设计时优先选择低损耗肖特基二极管、低 DCR 电感与低 ESR 输出电容，可显著提升整体效率并降低纹波。
六、选型与资料
在实际工程应用中，建议参考完整器件数据手册与参考设计（典型应用电路、外部元件数值与布线建议），并在样机阶段通过实际测量验证热性能、效率与电磁兼容（EMC）表现。若采用国产品牌替代（如华冠等），需对比引脚定义、热参数与测试数据，确保兼容性与可靠性。
结语：LM2576T-5.0 提供简单、可靠的 5V/3A 降压解决方案，适合多种工业与消费类中等功率应用。合理的外部器件选型与良好的布局、散热设计是发挥其性能的关键。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
