component
L78L12ABD-TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SO-8. Pinout reviewed by a person against the datasheet, 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
markdownL78L12ABD-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8
L78L12ABD-TR 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 positive output voltage pin, capable of delivering output current up to 100 mA (12 V nominal for this AB-grade part, 11.4-12.6 V over IO = 1 to 40 mA). |
| 2 | GND | power_in | Ground pin; in this SO-8 package pins 2, 3, 6 and 7 are electrically commoned to the die attach flag to reduce thermal resistance and improve power dissipation when connected to PCB copper heat-sinking area. |
| 3 | GND | power_in | Ground pin; in this SO-8 package pins 2, 3, 6 and 7 are electrically commoned to the die attach flag to reduce thermal resistance and improve power dissipation when connected to PCB copper heat-sinking area. |
| 4 | NC | unconnected | Not connected pin, no internal connection. |
| 5 | NC | unconnected | Not connected pin, no internal connection. |
| 6 | GND | power_in | Ground pin; in this SO-8 package pins 2, 3, 6 and 7 are electrically commoned to the die attach flag to reduce thermal resistance and improve power dissipation when connected to PCB copper heat-sinking area. |
| 7 | GND | power_in | Ground pin; in this SO-8 package pins 2, 3, 6 and 7 are electrically commoned to the die attach flag to reduce thermal resistance and improve power dissipation when connected to PCB copper heat-sinking area. |
| 8 | VIN | power_in | DC input voltage pin; absolute maximum input voltage is 35 V for the 12 V output version, with a recommended operating input range of 14.5 to 27 V (IO = 1 to 40 mA). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
L78L12ABD-TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
l78l12abd-tr-etched.step/l78l12abd-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78l12abd-tr.step/l78l12abd-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (45 pp, sha256
43922ae159face7e, retrieved 2026-09-29, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).