component
L78L09ABD13TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SO-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownL78L09ABD13TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8
L78L09ABD13TR from STMicroelectronics, in a SO-8. 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 | Regulated output voltage pin providing up to 100 mA of load current (VO = 8.28 to 9.72 V typical 9 V for the L78L09AB device). |
| 2 | GND | power_in | Ground pin; internally commoned to the die attach flag along with pins 3, 6 and 7 to reduce thermal resistance of the SO-8 package. |
| 3 | GND | power_in | Ground pin; internally commoned to the die attach flag along with pins 2, 6 and 7 to reduce thermal resistance of the SO-8 package. |
| 4 | NC | unconnected | Not internally connected pin. |
| 5 | NC | unconnected | Not internally connected pin. |
| 6 | GND | power_in | Ground pin; internally commoned to the die attach flag along with pins 2, 3 and 7 to reduce thermal resistance of the SO-8 package. |
| 7 | GND | power_in | Ground pin; internally commoned to the die attach flag along with pins 2, 3 and 6 to reduce thermal resistance of the SO-8 package. |
| 8 | VIN | power_in | Unregulated DC input voltage pin, with maximum input voltage of 30 V for output voltages of 3.3 to 9 V (applies to the 9 V device). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
L78L09ABD13TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
l78l09abd13tr-etched.step/l78l09abd13tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78l09abd13tr.step/l78l09abd13tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (40 pp, sha256
8b73c521b7f1b36e, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(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).