power-management-pmic

L78M05

Full part number: L78M05ABV

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

01 — Overview

This STMicroelectronics datasheet covers the L78M series of precision 500 mA linear voltage regulators, including part numbers like L78M05ABV and L78M12CDT-TR. The document describes these three-terminal positive regulators available in TO-220, DPAK, and IPAK packages with fixed outputs ranging from 5 V to 24 V. Key features include a maximum output current of 0.5 A, output voltages of 5, 6, 8, 9, 10, 12, 15, and 24 V, thermal overload protection, short circuit protection, and safe area protection. These robust devices offer a 2% or 4% output voltage tolerance depending on the version and are guaranteed for extended temperature ranges.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — — 6 mA TJ = 25 °C
output voltage 4.9 V 5 V 5.1 V TJ = 25 °C
output current — 500 mA —
supply voltage range 7 V — 20 V
operating temperature -40 °C — 125 °C
standby current — 6 mA —
psrr 62 dB — — VI = 8 to 18 V, f = 120 Hz, IO = 300 mA, TJ = 25 °C
dropout voltage — 2 V — TJ = 25 °C
output noise voltage — 40 µV — B = 10 Hz to 100 kHz, TJ = 25 °C
output count — 1 —
03 — Alternatives

Closest matches to L78M05

AZ1117C-3.3 2.5× higher output noise voltage, 2.0× higher output current, 1.7× lower dropout voltage
L78L05ABD13TR 5.0× lower output current, 2.2× higher supply voltage range, 1.3× lower psrr
LD1117-3.3 4.2× lower output voltage, 2.5× higher output noise voltage, 2.0× lower dropout voltage
AZ1117D-3.3TRE1 2.5× higher output noise voltage, 2.0× higher output current, 1.7× lower dropout voltage
AP2127K-3.3TRG1 2.1× lower supply voltage range, 1.9× lower operating temperature, 1.5× lower output voltage
AMS1117 2.0× higher output current, 1.8× lower dropout voltage, 1.5× lower supply voltage range
AP2112-1.2 4.2× lower output voltage, 3.2× lower supply voltage range, 2.0× lower dropout voltage
TLV758P 3.6× lower supply voltage range, 2.8× lower dropout voltage, 1.7× lower output voltage
04 — FAQ

Frequently asked questions

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

The dropout voltage is 2 V at TJ = 25 °C.

What is the maximum operating temperature for the L78M05ABV?

The maximum operating temperature is 125 °C.

What is the output count for the L78M05ABV?

The output count is 1.

What is the output current of the L78M05ABV?

The output current is 500 mA.

What is the output noise voltage of the L78M05ABV?

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

What is the output voltage of the L78M05ABV at TJ = 25 °C?

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

What is the Power Supply Rejection Ratio (PSRR) of the L78M05ABV?

The PSRR is 62 dB at VI = 8 to 18 V, f = 120 Hz, IO = 300 mA, and TJ = 25 °C.

What is the quiescent current of the L78M05ABV at TJ = 25 °C?

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

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