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MD85EC0PA1

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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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MD85EC0PA1

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

MD85EC0PA1 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 VOUT power_out Regulated output voltage pin; VOUT must not exceed VIN+0.3V, because reverse current through the parasitic diode between VIN and VOUT can destroy the IC.
2 GND power_in Ground pin for the regulator; the device is specified for operation with the ambient temperature range of -40 to +85 °C and the package power dissipation limit of 1000 mW.
3 VIN power_in Power input pin; the input voltage range is 2.2 V to 40 V (absolute maximum -0.3 V to 45 V).

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-89-3L
Category Power Management ICs
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
Input Voltage VIN 2.2 40 V 4
Output Voltage Accuracy (±2%) VOUT(S) -2 2 % VIN=VOUT(S)+2V, IOUT=1mA 4
Output Voltage (12.0 V variant) VOUT 12 V 3
Line Regulation 0.01 0.02 %/V VOUT(S)+2V≤VIN≤40V, IOUT=1mA 4
Load Regulation (VOUT(S)>5.3V) VOUT2 50 80 mV VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA 4
Temperature Stability -50 50 ppm/℃ VIN=VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ 4
GND Current (VOUT(S)>5.3V) IGND 1.5 2.3 3.5 uA VEN=VIN, no load 4
Dropout Voltage VDROP 4 8 mV VEN=VIN, VOUT(S)=3.3V, IOUT=1mA 4
Dropout Voltage VDROP 1200 1800 mV VEN=VIN, VOUT(S)=3.3V, IOUT=300mA 4
Shutdown Current ISHUT 0.1 1 uA VIN=40.0V, VEN=0 4
Maximum Output Current IOUTMAX 300 350 mA 4
Current Limit ILIM 350 550 mA VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) 4
Short Circuit Current ISHORT 65 mA VIN=VEN=VOUT(S)+2.0V, VOUT=0V 4
Power Supply Rejection Ratio PSRR 79 dB f=100Hz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR 62 dB f=1kHz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR 48 dB f=10kHz, IOUT=10mA 4
Power Supply Rejection Ratio PSRR 40 dB f=100kHz, IOUT=10mA 4
EN 'H' Level Voltage VENH 1.5 40 V 4
EN 'L' Level Voltage VENL 0 0.6 V 4
EN 'H' Level Current IENH -0.1 0.1 uA VIN=40V, VEN=VIN 4
EN 'L' Level Current IENL -0.1 0.1 uA VIN=40V, VEN=0 4
Over Temperature Protection OTP 170 ℃ IOUT=1mA 4
Input Voltage (absolute maximum) VIN -0.3 45 V 3
Power Dissipation (SOT89-3) PD 1000 mW SOT89-3 package 3
Operating Ambient Temperature Topr -40 85 ℃ 3
Storage Temperature Tstg -40 125 ℃ 3
ESD Protection (HBM) ESD HBM 5000 V HBM 3
Thermal Resistance Junction-to-Board (SOT89-3) RθJB 100 ℃/W Mounted on JEDEC standard 4-layer (2s2p) PCB 3

CAD (KiCad official)

  • Symbol: MD85EC0PA1
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: md85ec0pa1-etched.step / md85ec0pa1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md85ec0pa1.step / md85ec0pa1.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (13 pp, sha256 b57d90f008c009b2, retrieved 2026-11-05, 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