component
MD53R50
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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMD53R50
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
MD53R50 from Shanghai Mingda Microelectronics, in a SOT-23-5L. 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. Operating range up to 10 V; absolute maximum 12 V. Bypass to GND with CIN ≥ 1.0 µF (10 µF typical in application circuit). |
| 2 | GND | power_in | Ground / VSS reference for the regulator. All bypass capacitors return here. |
| 3 | EN | input | Enable / ON-OFF control input (active high). VENH ≥ 1.0 V enables the regulator; VENL ≤ 0.35 V shuts it down (ISHUT ≈ 0.1 µA typ). Pin is neither pulled up nor pulled down internally, so it must not be left floating - tie to VIN for always-on operation. Do not drive above VIN+0.3 V. |
| 4 | NC | unconnected | No connection. Leave floating or tie to a convenient net; not internally bonded. |
| 5 | VOUT | power_out | Regulated 5.0 V ±2% output, up to 500 mA typical. Requires COUT ≥ 2.2 µF (tantalum) or ≥ 10 µF (aluminum electrolytic) with ESR 0.5-5 Ω for stability. Short-circuit protected at ~50 mA typical. Do not exceed VIN+0.3 V on this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-5L |
| Category | PMIC |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
MD53R50 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (13 pp, sha256
264969efedda2a5d, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).