VERIFIED CROSS-REFERENCE

AMS1117 alternatives & equivalent parts

1A 低压差线性稳压器,SOT-223 封装,引脚 1=ADJ/GND、2=VOUT、3=VIN,常见 3.3V/5V/ADJ 版本。 — common packages: SOT-223. Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.

CANDIDATE COMPARISON

4 verified alternatives for AMS1117

AlternativeManufacturerRelationshipKey differencesSource
LM1117Texas InstrumentsPin-to-pinDrop-in: same footprint and pinout.TI 原厂 800mA LDO,SOT-223 引脚排列与 AMS1117 相同(GND/OUT/IN);输出电流 800mA(AMS1117 为 1A),压差 1.2V;固定电压版本必须电压一致(示例为 3.3V),大电流场景需降额评估。TI 官方在该页面另推荐 TLV1117 为更新的直接替代。TI 官方数据手册
LD1117STMicroelectronicsPin-to-pinDrop-in: same footprint and pinout.ST 版本 800mA LDO,SOT-223 引脚兼容;输出电流 800mA,压差约 1V;固定电压版本需电压一致,输出稳定电容按手册要求配置。ST 官方数据手册的第三方镜像(octopart)
NCP1117onsemiPin-to-pinDrop-in: same footprint and pinout.onsemi 版本,输出电流可达 1A(与 AMS1117 相当),SOT-223 引脚排列相同;固定电压版本需电压一致,压差最大 1.2V@800mA。onsemi 官方数据手册(NCP1117/D),经由 Mouser 托管
AP1117Diodes IncorporatedPin-to-pinDrop-in: same footprint and pinout.Diodes 版本 1A LDO,SOT-223 引脚兼容;压差最大 1.4V@满载,略高于 AMS1117;固定电压版本需电压一致。Diodes 官方数据手册 DS31009,经由 DigiKey 托管
BEFORE YOU SUBSTITUTE

Pre-replacement checklist

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 AMS1117

Source part reference: AMS1117 数据手册(UMW 镜像,购买前请核对原厂). Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.