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MD85E33QC3

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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD85E33QC3

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

MD85E33QC3 from Shanghai Mingda Microelectronics, in a SOT-23-5L. 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; input voltage range is 2.2V to 40V, with an absolute maximum of -0.3V to 45V.
2 GND power_in Ground reference pin for the regulator.
3 EN input Enable pin; drive high (VENH min 1.5V) to enable the device and low (VENL max 0.6V) to put it into low-current shutdown.
4 NC unconnected No internal connection.
5 VOUT power_out Regulated output voltage pin; the VOUT potential must not exceed VIN+0.3V, otherwise the device may be damaged by reverse current through the parasitic diode.

Key specifications

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

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
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 Voltage (current) IENL -0.1 0.1 uA VIN=40V, VEN=0 4
Output Voltage VOUT(S) 0.98 1.02 V VIN= VOUT(S)+2V, IOUT=1mA 4
Output Voltage Accuracy VOUT(S) -2 2 % 1
Temperature Stability -50 50 ppm/℃ VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ 4
Line Regulation ΔVOUT/ΔVIN 0.01 0.02 ％/V VOUT(S)+2V≤VIN≤40V, IOUT =1mA 4
Load Regulation VOUT2 20 40 mV VIN = VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤5.3V 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
GND Current IGND 1 1.5 2.5 uA VEN=VIN, no load, 3.0≤VOUT(S)≤5.3V 4
Shutdown Current ISHUT 0.1 1 uA EN=0, 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
Input Voltage (absolute maximum) VIN -0.3 45 V 3
Output Voltage (absolute maximum) VOUT -0.3 V Referenced to Vss; upper limit printed as VIN+0.3V (not numeric) 3
Power Dissipation PD 250 mW SOT23-5 package 3
Thermal Resistance Junction-to-Board 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 5000 V HBM 3
Input Capacitor (CIN) CIN 2.2 µF Notes on use: 2.2µF above 3
Output Capacitor (COUT) COUT 2.2 µF Notes on use: 2.2µF above 3

CAD (KiCad official)

  • Symbol: MD85E33QC3
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: md85e33qc3-etched.step / md85e33qc3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md85e33qc3.step / md85e33qc3.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 2026-10-19, 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