VERIFIED CROSS-REFERENCE
LM2596 alternatives & equivalent parts
TI SIMPLE SWITCHER 降压转换器，4.5–40V 输入，3A 输出，150kHz 固定频率，TO-220-5/TO-263-5 封装。 — common packages: TO-220-5 / TO-263-5. Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.
4 verified alternatives for LM2596
| Alternative | Manufacturer | Relationship | Key differences | Source |
|---|---|---|---|---|
| XL2596 | XLSEMI | Pin-to-pinDrop-in: same footprint and pinout. | 国产兼容型号，引脚排列与 LM2596 相同（VIN/输出/GND/FB/EN），4.5–40V/3A/150kHz 规格对标；非 TI 原厂，电感选型与输出电容 ESR 要求需按其手册复核。 | 第三方镜像（hqewimg）的 XLSEMI XL2596 数据手册；建议到 xlsemi.com 核对原版 |
| LM2576 | Texas Instruments | FunctionalSame function: board or design change needed. | TI 上一代 3A 降压芯片，TO-220-5 引脚排列相同但开关频率仅 52kHz，原按 150kHz 设计的电感量需重新计算选型；效率与体积不如 LM2596。 | TI 官方数据手册 |
| LMR33630 | Texas Instruments | FunctionalSame function: board or design change needed. | TI 新一代同步降压，3A/36V，400kHz–2.1MHz，封装与引脚完全不同（SOT-23/VQFN），需重新设计 PCB；效率与体积显著更优。 | TI 官方数据手册 |
| TPS54360 | Texas Instruments | FunctionalSame function: board or design change needed. | TI 60V/3.5A 降压，4.5–60V 输入，100kHz–2.5MHz，HSOIC-8 PowerPAD 封装，需重新设计；输入电压上限更高，适合 24V/48V 工业场景。 | 第三方镜像（pccomponents）的 TI TPS54360 数据手册 SLVSBB4D |
Pre-replacement checklist
- 确认输入/输出电压与电流是否在替代料范围内
- 开关频率不同（52kHz/150kHz/MHz 级）时必须重算电感与输出电容
- 封装/引脚不同时需改板，核对散热设计
- 核对使能（EN/ON-OFF）逻辑电平是否兼容
Need the exact lot, date code or a second source quoted?
Send the original MPN and the approved alternative. Sourceics reconfirms source, stock, date code and commercial terms before any order — no substitution without your engineering approval.
Request a quote for LM2596Source part reference: TI 官方数据手册. Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.