component
L78M12ABDT-TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout cross-checked by two models 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
markdownL78M12ABDT-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
L78M12ABDT-TR from STMicroelectronics, in a TO-252-2(DPAK). 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 | INPUT | power_in | Unregulated DC input to the regulator; for the 12 V grade the datasheet specifies operation with VI = 14.5 to 27 V (AB grade, IO = 5 to 350 mA) and an absolute maximum DC input voltage of 35 V, with a 0.33 µF input bypass capacitor recommended if the regulator is far from the supply filter. |
| 2 | GND | power_in | Ground/common reference pin, formed by the DPAK tab; thermal path to the package tab with junction-to-case thermal resistance RthJC = 8 °C/W and junction-to-ambient RthJA = 100 °C/W for the DPAK package. |
| 3 | OUTPUT | power_out | Regulated +12 V output (11.75 to 12.25 V at TJ = 25 °C for the AB grade), capable of delivering output current up to 0.5 A with internal current limiting, thermal shutdown and safe-area protection; a 0.1 µF output capacitor improves transient response though it is not required for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-252-2(DPAK) |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
L78M12ABDT-TR - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
l78m12abdt-tr-etched.step/l78m12abdt-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78m12abdt-tr.step/l78m12abdt-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (46 pp, sha256
bf25de1549fb4045, 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).