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LM78M05ADT

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM78M05ADT

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

LM78M05ADT from HGSEMI, in a TO-252. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Input voltage pin (INPUT); absolute maximum input voltage is 35 V for 5 V to 18 V output versions, and the LM78M05A is specified for VI = 7 V to 20 V over its output-voltage range.
2 GND power_in Ground pin, the common reference for the regulator, connected internally to the tab.
3 VOUT power_out Regulated output pin (OUTPUT) of 5 V (4.8 V to 5.2 V at TJ = +25 °C) for the LM78M05A, delivering up to 1 A.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-252
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage VO 4.8 5 5.2 V TJ = +25℃ 3
Output Voltage VO 4.75 5 5.25 V IO = 5mA to 1A, VI = 7V to 20V 3
Line Regulation VO 100 mV IO = 200mA, TJ = +25℃, VI = 7V to 25V 3
Line Regulation VO 50 mV IO = 200mA, TJ = +25℃, VI = 8V to 25V 3
Load Regulation VO 100 mV IO = 5mA to 0.5A, TJ = +25℃ 3
Load Regulation VO 50 mV IO = 5mA to 200mA, TJ = +25℃ 3
Quiescent Current IQ 4 6 mA TJ = +25℃ 3
Quiescent Current Change IQ 0.5 mA IO = 5mA to 350mA 3
Quiescent Current Change IQ 0.8 mA IO = 200mA, VI = 8V to 25V 3
Input Voltage VI 35 V for VO = 5V to 18V 2
Operating Junction Temperature Range TOPR 0 125 ℃ 2
Storage Temperature Range TSTG -65 150 ℃ 2
Output Voltage Drift V/T -0.5 mV/℃ IO = 5mA, TJ = -40 to +85℃ 3
Output Noise Voltage VN 40 µV/Vo f = 10Hz to 100kHz 3
Ripple Rejection RR 80 dB f = 120Hz, IO = 300mA, VI = 8V to 18V, TJ = +25℃ 3
Dropout Voltage VD 2 V TJ = +25℃, IO = 500mA 3
Short Circuit Current ISC 300 mA TJ = +25℃, VI = 35V 3
Peak Current IPK 700 mA TJ = +25℃ 3
Thermal Resistance Junction-Case RθJC 2.5 ℃/W TO-252-2, Tc = +25℃ 2
Thermal Resistance Junction-Air RθJA 92 ℃/W TO-252-2, Ta = +25℃ 2

CAD (KiCad official)

  • Symbol: LM78M05ADT
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: lm78m05adt-etched.step / lm78m05adt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm78m05adt.step / lm78m05adt.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HGSEMI datasheet (11 pp, sha256 99c9ca630430d237, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF