component

MD52E33QC3

Public Made by Adom

by adom

Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs md52e33qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
md52e33qc3-etched.fit.json md52e33qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md52e33qc3-etched.glb md52e33qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md52e33qc3-etched.step md52e33qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md52e33qc3.glb Publish 0.1.0 · Ray
md52e33qc3.kicad_mod Publish 0.1.0 · Ray
md52e33qc3.kicad_sym Publish 0.1.0 · Ray
md52e33qc3.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
md52e33qc3.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json md52e33qc3: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md md52e33qc3: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MD52E33QC3

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

MD52E33QC3 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 Input supply pin. Operating range 2.2V to 7.0V (absolute max -0.3V to +8V). Decouple with a low-ESR ceramic capacitor of 1.0µF or greater placed close to the pin.
2 GND power_in Ground reference for the regulator and reference voltage. Also the return path used by the internal output auto-discharge switch when EN is low.
3 EN input Enable input, active high. VENH ≥ 1.0V turns the regulator on (max 7.0V); VENL ≤ 0.38V forces shutdown (ISHUT ≈ 10nA) and activates the COUT auto-discharge switch via RDCHG (~450Ω typ). Input leakage ±0.1µA. Do not leave floating.
4 NC unconnected No internal connection. Leave floating or tie to GND for best mechanical rigidity.
5 VOUT power_out Regulated 3.3V output (±2% initial accuracy). Delivers up to 500mA with a typical dropout of 230mV. Requires a 1.0µF (or larger) low-ESR ceramic output capacitor. Must not exceed VIN+0.3V to avoid reverse current through the P-MOSFET body diode.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • MD52E33QC3
  • MD52E33QA3
  • MD52A33PA1
  • MD52E33WB6

CAD (KiCad official)

  • Symbol: MD52E33QC3
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: md52e33qc3-etched.step / md52e33qc3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md52e33qc3.step / md52e33qc3.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
md52e33qc3.step 85 KB You want the bare part, or you mark your own boards.
md52e33qc3-etched.step 2.2 MB You want the part with MD52E33QC3 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 526 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (14 pp, sha256 4168b8cf3e52f15f, 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