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Best Alternatives to LM1117GS-5.0

Package: SOT-223-3LTak Cheong Electronics (Holdings) Co., LimitedPower Management (PMIC)Power Supply Rejection Ratio (PSRR): 75dB@(120Hz)MAX Output Current: 1ADropout Voltage: 1.2V@(1A)Output Type: 固定Output Voltage: 5V

Find the best replacements for the LM1117GS-5.0, a common 5V 1A LDO in a SOT-223 package. This guide covers verified pin-compatible upgrades and functional alternatives to fit your design needs.

AI replacement insight

Package riskmedium

The 1117 family comes in many packages (SOT-223, DPAK, etc.). Verify the package code.

Electrical risklow

The 1117 series is highly standardized, but always check dropout and max input voltage.

Sourcing risklow

This is a very common LDO type with multiple manufacturers and wide availability.

Can it be replaced directly?

Yes, the IDCHIP 1117-5 is a direct pin-to-pin replacement with matching key specifications and package.

Best replacement path

Upgrade to the onsemi NCP1117ST50T3G for a wider input voltage range (20V) in the same SOT-223 footprint.

Main risk

The main risk is selecting a part with a different package (e.g., DPAK) by mistake, which would not fit the SOT-223 PCB layout.

Recommended alternatives

4
NCP1117ST50T3G package
NCP1117ST50T3G

onsemi

Needs validationlow risk

A pin-compatible LDO in a SOT-223 package with a higher maximum input voltage (20V), offering an upgrade path.

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Alternative comparison matrix

Feature / factorLM1117GS-5.0NCP1117ST50T3GNCV1117ST50T3G1117-5Compatibility / risk
PackageSOT-223-3LSOT-223SOT-223SOT-223-3LSOT-223 / SOT-223-3L / DPAK (TO-252) — Package is form-fit compatible.; NCV1117ST50T3G: Package is form-fit compatible.; 1117-5: Package matches target, enabling form-fit compatibility.; NCP1117DT50RKG: Different package requires a new PCB layout.
Voltage5.0V5.0V20V15V5.0V / 20V / 15V — Output voltage is identical.; NCV1117ST50T3G: Higher max input voltage provides more design margin.; 1117-5: Maximum input voltage matches target (verified from datasheet).; NCP1117DT50RKG: Output voltage is identical.
Current1.0A1.0A-1.0A1.0A — Output current rating is identical.; 1117-5: Output current rating is identical.
ApplicationCommercial-AEC-Q100-AEC-Q100 — Automotive qualification offers higher reliability.

Application & sourcing insights

Questions & answers

The best alternative depends on your needs. For a direct drop-in, the IDCHIP 1117-5 is excellent. For an upgrade with a wider operating range, the onsemi NCP1117ST50T3G offers a higher input voltage in the same package.