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Contents

README

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MG78L05N3

Megain · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

MG78L05N3 from Megain, in a SOT-89-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VOUT power_out Fixed 5V regulated output voltage pin capable of delivering up to 120mA output current with ±4% accuracy.
2 GND power_in Ground connection.
3 VIN power_in Input voltage pin accepting 7 to 30V regulated supply input; absolute maximum rating 35V.

Key specifications

Parameter Value
Manufacturer Megain
Package SOT-89-3
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: MG78L05N3
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: mg78l05n3-etched.step / mg78l05n3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mg78l05n3.step / mg78l05n3.glb are the bare package body.

Provenance

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

  • Datasheet: Megain datasheet (8 pp, sha256 6d046aa351bd5463, retrieved 2026-09-21, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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