component
78L12L
Public Made by Adomby adom
TDSEMIC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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78L12L
TDSEMIC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
78L12L from TDSEMIC, in a SOT-89-3. 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 fixed output of 12V (12.00V typical, 11.40V to 12.60V over Io=1mA to 40mA), with output current rated up to 100mA. |
| 2 | GND | power_in | Common ground reference pin for the regulator. |
| 3 | VIN | power_in | Unregulated input supply; the datasheet gives an absolute maximum input voltage of 35V for the 12V to 15V versions and tests the 12V output with 14.5V to 27V input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
78L12L - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
78l12l-etched.step/78l12l-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78l12l.step/78l12l.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TDSEMIC datasheet (14 pp, sha256
e5bfb2abe8d06ad1, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).
# 78L12L
**TDSEMIC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
78L12L from TDSEMIC, in a SOT-89-3. 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 fixed output of 12V (12.00V typical, 11.40V to 12.60V over Io=1mA to 40mA), with output current rated up to 100mA. |
| 2 | GND | power_in | Common ground reference pin for the regulator. |
| 3 | VIN | power_in | Unregulated input supply; the datasheet gives an absolute maximum input voltage of 35V for the 12V to 15V versions and tests the 12V output with 14.5V to 27V input. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `78L12L`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `78l12l-etched.step` / `78l12l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78l12l.step` / `78l12l.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TDSEMIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603382424873693184) (14 pp, sha256 `e5bfb2abe8d06ad1`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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](docs/78l12l-datasheet.pdf)