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78L12G-AB3-R
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UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+53@@ -0,0 +1,53 @@+# 78L12G-AB3-R++**UTC Unisonic Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89++78L12G-AB3-R from UTC Unisonic Tech, in a SOT-89. 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 | OUT | power_out | Regulated +12V output. Typical VOUT=12.0V (11.52-12.48V at TJ=25°C); supplies up to 100mA. Bypass with 0.1µF ceramic close to the pin for stability and transient response. |+| 2 | GND | power_in | Ground / common return. On SOT-89 this is the large tab pin and provides the primary thermal path to the PCB copper. |+| 3 | IN | power_in | Unregulated DC input. For the 12V variant: 14.5V ≤ VIN ≤ 27V for regulation, 35V absolute maximum. Bypass with 0.33µF close to the pin to ensure stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UTC Unisonic Tech |+| Package | SOT-89 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `78L12G-AB3-R`+- `78L12G-AB3-R78L12G-AB3-C-R`+- `78L12G-AB3-R78L12G-AF5-R`+- `78L12G-AB3-R78L12G-S08-R`+- `78L12G-AB3-R78L12G-T92-B`+- `78L12G-AB3-R78L12G-T92-K`+- `78L12G-AB3-R78L12L-T92-B`+- `78L12G-AB3-R78L12L-T92-K`+- `78L12G-AB3-R78L12G-T9N-B`+- `78L12G-AB3-R78L12G-T9N-K`+- `78L12G-AB3-R78L12L-T9N-B`+- `78L12G-AB3-R78L12L-T9N-K`++## CAD (KiCad official)++- Symbol: `78L12G-AB3-R`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UTC Unisonic Tech datasheet](https://datasheet.lcsc.com/datasheet/pdf/72d69b5153774747bd539241086237bc.pdf) (8 pp, sha256 `019cf0ff8e450efc`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/78l12g-ab3-r-datasheet.pdf)
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