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L78M05ACDT-TR
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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# L78M05ACDT-TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)++L78M05ACDT-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 voltage. For a 5 V output, VI must be at least ~7 V (dropout ≈ 2 V typ). Absolute max VI = 35 V. A 0.33 µF ceramic bypass capacitor to GND is recommended close to this pin. |+| 2 | GND | power_in | Ground / common reference for input and output. On the DPAK package the GND pin is electrically and thermally common with the exposed metal tab, which serves as the primary heat-sinking surface (RthJC = 8 °C/W, RthJA = 100 °C/W). |+| 3 | OUTPUT | power_out | Regulated +5 V output, 4.8 V to 5.2 V over line/load/temperature. Delivers up to 500 mA (guaranteed 350 mA test condition) with internal short-circuit current limit (~300 mA typ, 700 mA peak). A 0.1 µF ceramic capacitor to GND improves transient response. |+| TAB | GND | power_in | Exposed DPAK metal tab, internally connected to pin 2 (GND). Provides the primary thermal path to the PCB copper pour for heat dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-252-2(DPAK) |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `L78M05ACDT-TRDT`+- `L78M05ACDT-TRDT-TR`+- `L78M05ACDT-TRT`+- `L78M05ACDT-TRCV`++## CAD (KiCad official)++- Symbol: `L78M05ACDT-TR`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/l78m05acdt-tr.pdf) (29 pp, sha256 `06d79d9f1c19140c`, 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/l78m05acdt-tr-datasheet.pdf)
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