power-management-pmic

L78L05

Full part number: L78L05ABD13TR

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This ST Microelectronics datasheet covers the L78L family of positive voltage regulators, including various output voltages and package types like TO-92 and SOT-89. The document serves as a technical reference for designers needing fixed voltage regulation up to 100 mA with high reliability. Key features include output currents up to 100 mA, available output voltages ranging from 3.3 V to 24 V, integrated thermal overload and short-circuit protection, and operation without external components. The series offers precision voltage selection in either ±4% or ±8% tolerance variants, making it ideal for on-card noise elimination and local power distribution.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — — 6 mA TJ = 25 °C
output voltage 4.8 V 5 V 5.2 V TJ = 25 °C
output current — 100 mA —
supply voltage range — — 30 V VO = 3.3 to 9 V
operating temperature -40 °C — 125 °C
standby current — 6 mA —
psrr 41 dB 49 dB — Vi = 8 to 18 V, f = 120 HzIo = 40 mA, TJ = 25 °C
dropout voltage — 2 V —
output noise voltage — 40 µV — B = 10 Hz to 100 kHz, TJ = 25 °C
output count — 1 —
03 — Alternatives

Closest matches to L78L05

AZ1117C-3.3 10.0× higher output current, 2.5× higher output noise voltage, 2.0× lower supply voltage range
L78M05ABV 5.0× higher output current, 2.2× lower supply voltage range, 1.3× higher psrr
LD1117-3.3 8.0× higher output current, 4.2× lower output voltage, 2.5× higher output noise voltage
AZ1117D-3.3TRE1 10.0× higher output current, 2.5× higher output noise voltage, 2.0× lower supply voltage range
AP2127K-3.3TRG1 4.6× lower supply voltage range, 4.5× higher output current, 1.9× lower operating temperature
AP2112-1.2 7.1× lower supply voltage range, 6.0× higher output current, 4.2× lower output voltage
LP5907 16.7× lower dropout voltage, 7.8× lower supply voltage range, 4.0× lower output noise voltage
TLV758P 8.0× lower supply voltage range, 7.2× higher output current, 2.8× lower dropout voltage
04 — FAQ

Frequently asked questions

What is the dropout voltage of the L78L05ABD13TR?

The dropout voltage is 2 V.

What is the maximum operating temperature for the L78L05ABD13TR?

The maximum operating temperature is 125 °C.

What is the output count for the L78L05ABD13TR?

The output count is 1.

What is the output current of the L78L05ABD13TR?

The output current is 100 mA.

What is the output noise voltage of the L78L05ABD13TR?

The output noise voltage is 40 µV at B = 10 Hz to 100 kHz and TJ = 25 °C.

What is the output voltage at TJ = 25 °C?

The output voltage is 5 V at TJ = 25 °C.

What is the Power Supply Rejection Ratio (PSRR) of the L78L05ABD13TR?

The PSRR is 49 dB when Vi = 8 to 18 V, f = 120 Hz, Io = 40 mA, and TJ = 25 °C.

What is the quiescent current of the L78L05ABD13TR at TJ = 25 °C?

The quiescent current is 6 mA at TJ = 25 °C.

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