MD8312

@@ -0,0 +1,43 @@+# MD8312++**Shanghai Mingda Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++MD8312 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 | VOUT | power_out | Regulated 12V output. Drive with a >=1.0uF low-ESR ceramic capacitor to GND placed close to the pin. Maximum output current 300mA (typ), current-limited around 550mA with foldback. Must not exceed VIN+0.3V or the internal parasitic diode will conduct. |+| 2 | GND | power_in | Device ground / return. Quiescent GND current is ~1.5uA (no load) and rises with IOUT (typ 460uA at IOUT=100mA). SOT89 heat-slug tab; connect to the ground plane for thermal dissipation (PD=1000mW, RθJB=100 °C/W). |+| 3 | VIN | power_in | Unregulated input supply, 2.2V to 40V (absolute max 45V). Bypass with a >=1.0uF ceramic capacitor to GND close to the pin to avoid oscillation. For the 12V output variant VIN must be at least VOUT + dropout (~1.3V typ at 300mA). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Mingda Microelectronics |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `MD83128312`+- `MD83128312A`++## CAD (KiCad official)++- Symbol: `MD8312`+- 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/md8312-datasheet.pdf) (10 pp, sha256 `b90bf74c0495d786`, 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/md8312-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "md8312",+  "version": "0.1.0",+  "type": "component",+  "description": "Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "md8312"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "md8312.kicad_sym",+    "md8312.kicad_mod",+    "md8312.glb",+    "md8312.step",+    "md8312.lbr",+    "docs/hero.png",+    "docs/md8312-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file