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STMicroelectronics L78L05ABD13TR — Power Management (PMIC / Gate Driver)

ST L78L05ABD13TR 5V Fixed Positive Voltage Regulator, 100 mA

MPNL78L05ABD13TR
End of Life

STMicroelectronics L78L05ABD13TR, positive fixed 5 V voltage regulator, 100 mA output, 49 dB PSRR (120 Hz), -40°C to 125°C, 8-SOIC package.

$0.5Ref. price · indicative, final on quote
STMicroelectronics L78L05ABD13TR datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

L78L05ABD13TR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input30V
Voltage - output (Min (Fixed))5V
Output current100mA
Current - supply6 mA
Current - quiescent5.5 mA
Operating temperature-40°C ~ 125°C
PSRR49dB (120Hz)
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Protection featuresOver Current, Over Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

The STMicroelectronics L78L05ABD13TR is a fixed 5 V positive voltage regulator delivering up to 100 mA in an SOIC-8 package. It is a classic three-terminal linear regulator — no external passives beyond the input/output capacitors — suited for powering low-current 5 V rails on industrial control boards, sensor interfaces, or auxiliary supplies in motor drives and power supplies.

The 100 mA output current sets the hard load limit. PSRR is 49 dB at 120 Hz. Protection features include over-current, over-temperature, and short-circuit shutdown — enough to survive a momentary output short without external foldback circuitry.

Frequently asked questions

What is the pinout of L78L05ABD13TR?

The L78L05ABD13TR uses the standard 8-pin SOIC pinout for a three-terminal positive regulator: pin 1 is output, pin 2 is ground, pin 8 is input. Pins 3 through 7 are typically no-connect or can be tied to ground for improved thermal dissipation. Confirm against the datasheet for your specific layout.

Can I use L78L05ABD13TR as a replacement for L78L05ABD?

The L78L05ABD13TR is the Tape & Reel variant of the L78L05ABD. Electrically they are identical — same 5 V fixed output, same 100 mA rating, same SOIC-8 package. The '13TR' suffix indicates reel packaging; the bare L78L05ABD typically ships in tube. For a BOM line, they are interchangeable as long as the packaging format matches your assembly feeder requirements.

What is L78L05ABD13TR's PSRR?

The listed PSRR is 49 dB at 120 Hz. This is the ripple rejection at the fundamental of a full-wave rectified mains supply — adequate for most digital and general-purpose analog rails, but not a high-bandwidth LDO. For noise-sensitive analog front-ends operating above a few kHz, consider a regulator with wider PSRR bandwidth.