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L78L09ACD13TR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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L78L09ACD13TR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8

L78L09ACD13TR from STMicroelectronics, in a SO-8. 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 VOUT power_out Regulated 9 V output (±4% for the A grade), delivering up to 100 mA with a 0.1 µF output capacitor used in the test circuit.
2 GND power_in Ground; electrically common to the die attach flag and pins 3, 6 and 7, so copper here serves as heat-sink.
3 GND power_in Ground; electrically common to the die attach flag and pins 2, 6 and 7, so copper here serves as heat-sink.
4 NC unconnected No connect pin.
5 NC unconnected No connect pin.
6 GND power_in Ground; electrically common to the die attach flag and pins 2, 3 and 7, so copper here serves as heat-sink.
7 GND power_in Ground; electrically common to the die attach flag and pins 2, 3 and 6, so copper here serves as heat-sink.
8 VIN power_in Unregulated DC input voltage, absolute maximum 30 V for 3.3 to 9 V output versions, with a 0.33 µF input capacitor used in the test circuit.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SO-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: L78L09ACD13TR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: l78l09acd13tr-etched.step / l78l09acd13tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78l09acd13tr.step / l78l09acd13tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (40 pp, sha256 8b73c521b7f1b36e, retrieved 2026-10-08, 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