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MC33275ST-3.3T3G
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onsemi MC33275ST 3 3T3G Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# MC33275ST-3.3T3G++**onsemi MC33275ST 3 3T3G** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223++MC33275ST-3.3T3G from onsemi MC33275ST 3 3T3G, in a SOT-223. 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 | Vin | power_in | Unregulated input supply. Absolute maximum 13 Vdc; operating range typically [Vout + 1 V] to 12 V. Input capacitor recommended for stability and transient response. |+| 2 | GND | power_in | Ground reference for the regulator. Connect to system ground; ties to the tab (pin 4) internally on the SOT-223 package. |+| 3 | Vout | power_out | Regulated 3.3 V output (3.267 V min / 3.30 V typ / 3.333 V max at 25°C). Supplies up to 300 mA. Requires at least 0.33 µF output capacitance for stability; 1.0 µF or larger recommended for best transient response. |+| 4 | GND | power_in | Ground tab (heat-spreading pad) on the SOT-223 package. Electrically connected to pin 2; solder to a copper ground pour for thermal dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi MC33275ST 3 3T3G |+| Package | SOT-223 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `MC33275ST-3.3T3GST`+- `MC33275ST-3.3T3GD`+- `MC33275ST-3.3T3GDT`+- `MC33275ST-3.3T3GMN`++## CAD (KiCad official)++- Symbol: `MC33275ST-3.3T3G`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi MC33275ST 3 3T3G datasheet](https://www.onsemi.com/pdf/datasheet/mc33275st-3.3t3-d.pdf) (14 pp, sha256 `684d39955a0981fe`, 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/mc33275st-3-3t3g-datasheet.pdf)
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