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MD5333
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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# MD5333++**Shanghai Mingda Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++MD5333 from Shanghai Mingda Microelectronics, in a SOT-89-3. 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 | GND | power_in | Ground / VSS return for the regulator. Common reference for VIN and VOUT; carries load return current up to 500 mA. |+| 2 | VOUT | power_out | Regulated 3.3V ±2% output. Sourcing capability up to 500 mA. Requires an output capacitor CL of ≥2.2 µF (tantalum) or ≥10 µF (aluminum electrolytic) for stability. |+| 3 | VIN | power_in | Unregulated supply input, 3.3V + Vdrop up to 10V absolute max (12V rated abs-max in table). Bypass with CIN ≥ 1.0 µF close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Mingda Microelectronics |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `MD5333MD533`+- `MD5333MD5-33`+- `MD5333MD5-33`++## CAD (KiCad official)++- Symbol: `MD5333`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](docs/md5333-datasheet.pdf) (16 pp, sha256 `54cbb58cd55dcd8d`, retrieved 2026-08-17, tier: lcsc)+- **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/md5333-datasheet.pdf)
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