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MD52E18QC3

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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD52E18QC3

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

MD52E18QC3 from Shanghai Mingda Microelectronics, in a SOT-23-5L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Input supply pin; the datasheet gives an input voltage range of 2.2 V to 7.0 V, with an absolute maximum rating of -0.3 V to 8 V.
2 GND power_in Ground reference pin for the regulator.
3 EN input ON/OFF control (enable high); the EN high level is 1.0 V to 7.0 V and the EN low level is 0 V to 0.38 V, and a low signal also activates the COUT auto-discharge.
4 NC unconnected Not connected pin, marked NC in the pin configuration.
5 VOUT power_out Regulated output pin; the datasheet states that VOUT must not exceed VIN+0.3 V, otherwise the IC may be destroyed by reverse current through the parasitic diodes.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-5L
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: MD52E18QC3
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: md52e18qc3-etched.step / md52e18qc3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md52e18qc3.step / md52e18qc3.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Shanghai Mingda Microelectronics datasheet (14 pp, sha256 4168b8cf3e52f15f, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF