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MD85E33YA2

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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD85E33YA2

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3L

MD85E33YA2 from Shanghai Mingda Microelectronics, in a SOT-223-3L. 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 VIN power_in Power input pin; operating input voltage range is 2.2V to 40V (absolute maximum 45V).
2 GND power_in Ground pin; the tab (thermal pad) is electrically connected to the GND node and should be connected to the GND plane for improved thermal performance.
3 VOUT power_out Regulated output voltage pin (3.3V for MD85E33YA2), up to 300mA output current, with a recommended output capacitor of 1uF or more.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-223-3L
Category Power Management (PMIC)
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 6
Input Voltage (absolute maximum) VIN -0.3 45 V 5
Output Voltage Accuracy (printed ±2%) VOUT -2 2 % 1
Temperature Stability -50 50 ppm/℃ VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ 6
GND Current (VOUT(S) 3.0 to 5.3V) IGND 1 1.5 2.5 uA VEN=VIN, no load, 3.0≤VOUT(S)≤5.3V 6
Dropout Voltage at 1mA VDROP 4 8 mV VEN=VIN, VOUT(S)=3.3V, IOUT=1mA 6
Dropout Voltage at 300mA VDROP 1200 1800 mV VEN=VIN, VOUT(S)=3.3V, IOUT=300mA 6
Line Regulation 0.01 0.02 %/V VOUT(S)+2V≤VIN≤40V, IOUT=1mA 6
Load Regulation (VOUT(S)≤5.3V) 25 50 mV VOUT(S)≤5.3V; VIN = VOUT(S)+2V, 1mA≤IOUT≤300mA 6
Shutdown Current ISHUT 0.1 1 uA VIN=40.0V, VEN=0 6
Maximum Output Current IOUTMAX 300 350 mA 6
Current Limit ILIM 350 550 mA VIN= VOUT(S)+2V, VOUT = 0.95 ×VOUT(S) 6
EN 'H' Level Voltage VENH 1.5 40 V 6
EN 'L' Level Voltage VENL 0 0.6 V 6
EN 'H' Level Current IENH -0.1 0.1 uA VIN=40V, VEN=VIN 6
EN 'L' Level Current IENL -0.1 0.1 uA VIN=40V, VEN=0 6
Power Dissipation (SOT223-3) PD 1500 mW Ta=25℃ 5
Thermal Resistance RθJA (SOT223-3) RθJA 66 ℃/W 5
Operating Ambient Temperature Topr -40 85 ℃ 5
Storage Temperature Tstg -40 125 ℃ 5
ESD Protection (HBM) ESD HBM 5000 V HBM 5

CAD (KiCad official)

  • Symbol: MD85E33YA2
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3L (KiCad packages3D, STEP)
  • 3D model files: md85e33ya2-etched.step / md85e33ya2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md85e33ya2.step / md85e33ya2.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (17 pp, sha256 38727c99a8471351, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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