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MD52A12PA1

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Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD52A12PA1

Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-89-3L

MD52A12PA1 from Shanghai Mingda Microelectronics, in a SOT-89-3L. 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 GND power_in Ground reference pin; the datasheet gives no separate electrical limit for it, and the internal COUT auto-discharge switch connects between VOUT and GND.
2 VIN power_in Input supply pin with an operating input voltage range of 2.2V to 7.0V and an absolute maximum rating of -0.3V to 8V.
3 VOUT power_out Regulated output pin driven by a P-channel pass MOSFET; the VOUT potential must not exceed VIN+0.3V to avoid reverse current damage.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-89-3L
Category Power Supply Chip
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Temperature Stability ΔVOUT/ΔT -50 50 ppm/℃ VIN=VEN=VOUT(S)+1.0V, IOUT=1mA, -40℃≤Ta≤125℃ 4
Dropout Voltage VDROP 240 mV VEN=VIN, VOUT<3V, IOUT=500mA 4
Line Regulation ΔVOUT/ΔVIN 0.05 0.1 %/V VOUT(S)+0.5V≤VIN=VEN≤7V, IOUT=10mA 4
Load Regulation ΔVOUT 50 90 mV VIN=VEN=VOUT(S)+1.0V, 1mA≤IOUT≤500mA 4
GND Current IGND 0.6 0.9 μA no load (VEN=VIN) 4
GND Current IGND 210 μA IOUT=500mA (VEN=VIN) 4
Shutdown Current ISHUT 0.01 0.1 μA VIN=7.0V, VEN=0 4
Input Voltage VIN 2.2 7 V 4
Maximum Output Current IOUTMAX 450 500 mA 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
COUT Auto Discharge RDCHG 280 450 640 Ω VEN=0, VOUT=VOUT(S) 4
Power Supply Rejection Ratio PSRR 64 dB f=10Hz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR 51 dB f=100Hz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR 34 dB f=1kHz, IOUT=10mA 4
EN High Level Voltage VENH 1 7 V 4
EN Low Level Voltage VENL 0 0.38 V 4
EN High Level Current IENH -0.1 0.1 μA VIN=7.0V, VEN=VIN 4
EN Low Level Current IENL -0.1 0.1 μA VIN=7.0V, VEN=0 4
Input Voltage VIN -0.3 8 V 3
Power Dissipation SOT89-3 PD 1000 mW SOT89-3 3
Thermal Resistance RθJB SOT89-3 RθJB 100 ℃/W Mounted on JEDEC standard 4layer (2s2p) PCB test board 3
Operating Ambient Temperature Topr -40 85 ℃ 3
Storage Temperature Tstg -40 125 ℃ 3
ESD Protection HBM ESD HBM 6000 V 3

CAD (KiCad official)

  • Symbol: MD52A12PA1
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: md52a12pa1-etched.step / md52a12pa1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md52a12pa1.step / md52a12pa1.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 d323bc81a3ded089, retrieved 2026-10-27, 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