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MD52E25QC3

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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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docs md52e25qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
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md52e25qc3-etched.glb md52e25qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
md52e25qc3-etched.step md52e25qc3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
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page.json md52e25qc3: specified limits as data (metadata.characteristics, 29 rows from the datasheet) · Ray 25d ago
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MD52E25QC3

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

MD52E25QC3 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 Positive supply input, 2.2V to 7.0V operating range (absolute max 8V). Bypass to GND with a ceramic capacitor ≥1.0μF placed close to the pin.
2 GND power_in Device ground reference. All internal voltages, the reference, and the feedback divider return here.
3 EN input Active-high enable input. VENH ≥ 1.0V (up to VIN, max 7.0V) turns the regulator on; VENL ≤ 0.38V puts the device into shutdown (ISHUT = 10nA typ at VIN=7.0V) and activates the internal COUT auto-discharge path (RDCHG ≈ 280-640Ω). Input current is ±0.1μA max; do not leave floating.
4 NC unconnected No internal connection. Leave floating or tie to GND for mechanical robustness.
5 VOUT power_out Regulated 2.5V output (±2% accuracy). Delivers up to 500mA with 230mV dropout at IOUT=500mA. Requires a low-ESR ceramic output capacitor ≥1.0μF for stability; do not force this pin above VIN+0.3V (reverse current via the P-MOSFET parasitic diode can destroy the IC).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MD52E25QC3
  • MD52E28QC3
  • MD52E30QC3
  • MD52E33QC3
  • MD52E36QC3
  • MD52E40QC3
  • MD52E50QC3
  • MD52E25QA3
  • MD52E28QA3
  • MD52E30QA3
  • MD52E33QA3
  • MD52E36QA3
  • MD52E40QA3
  • MD52E50QA3
  • MD52A25PA1
  • MD52A28PA1
  • MD52A30PA1
  • MD52A33PA1
  • MD52A36PA1
  • MD52A40PA1
  • MD52A50PA1
  • MD52E25WB6
  • MD52E28WB6
  • MD52E30WB6
  • MD52E33WB6
  • MD52E36WB6
  • MD52E40WB6
  • MD52E50WB6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage accuracy (VOUT(S)≥2.0V) VOUT -2 2 % VIN=VOUT(S)+1.0V, IOUT=10mA 4
Dropout voltage (VOUT<3V) VDROP 240 mV VEN=VIN, IOUT=500mA 4
Line regulation 0.05 0.1 %/V VOUT(S)+0.5V≤VIN=VEN≤7V, IOUT=10mA 4
Load regulation 50 90 mV VIN=VEN=VOUT(S)+1.0V, 1mA≤IOUT≤500mA 4
Temperature stability -50 50 ppm/℃ VIN=VEN=VOUT(S)+1.0V, IOUT=1mA, -40℃≤Ta≤125℃ 4
GND current (no load) IGND 0.6 0.9 μA no load, VEN=VIN 4
GND current (IOUT=500mA) IGND 210 μA IOUT=500mA 4
Shutdown current ISHUT 0.01 0.1 μA VIN=7.0V, VEN=0 4
EN 'H' level voltage VENH 1 7 V 4
EN 'L' level voltage VENL 0 0.38 V 4
EN 'H' level current IENH -0.1 0.1 μA VIN=7.0V, VEN=VIN 4
EN 'L' level current IENL -0.1 0.1 μA VIN=7.0V, VEN=0 4
Input voltage range VIN 2.2 7 V 4
Maximum output current IOUTMAX 450 500 mA 4
COUT auto-discharge resistance RDCHG 280 450 640 Ω VEN=0, VOUT=VOUT(S) 4
Current limit ILIM 750 mA VIN=VEN=VOUT(S)+1.0V, VOUT = 0.95 ×VOUT(S) 4
Short circuit current ISHORT 50 mA VIN=VEN=VOUT(S)+1.0V, VOUT=0V 4
Power supply rejection ratio (f=10Hz) PSRR 64 dB f=10Hz, IOUT=10mA 4
Power supply rejection ratio (f=100Hz) PSRR 51 dB f=100Hz, IOUT=10mA 4
Power supply rejection ratio (f=1kHz) PSRR 34 dB f=1kHz, IOUT=10mA 4
Input voltage (absolute maximum) VIN -0.3 8 V 3
Power dissipation (SOT23-5) PD 250 mW SOT23-5 package 3
Thermal resistance junction-to-board (SOT23-5) RθJB 180 ℃/W SOT23-5; mounted on JEDEC standard 4-layer (2s2p) PCB 3
Operating ambient temperature Topr -40 85 ℃ 3
Storage temperature Tstg -40 125 ℃ 3
ESD protection (HBM) ESD HBM 6000 V 3
Input capacitor (CIN) CIN 1 µF Notes on use: input capacitor 1.0µF above 3
Output capacitor (COUT) COUT 1 µF Notes on use: output capacitor 1.0µF above 3
Nominal output voltage (MD52E25QC3) VOUT 2.5 V product selection for MD52E25QC3 2

CAD (KiCad official)

  • Symbol: MD52E25QC3
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: md52e25qc3-etched.step / md52e25qc3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md52e25qc3.step / md52e25qc3.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (None 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