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MD85EF0SF4

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Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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MD85EF0SF4

Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · ESOP-8

MD85EF0SF4 from Shanghai Mingda Microelectronics, in a ESOP-8. 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, up to 300mA, needs at least 1uF output capacitor and must not exceed VIN+0.3V.
2 NC unconnected No internal connection.
3 NC unconnected No internal connection.
4 EN input Enable pin: drive high (1.5V to 40V) to enable the device, drive low (0 to 0.6V) to put it into low current shutdown.
5 GND power_in Ground.
6 NC unconnected No internal connection.
7 NC unconnected No internal connection.
8 VIN power_in Power input pin, operating range 2.2V to 40V (absolute maximum 45V) with at least 1uF input capacitor.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package ESOP-8
Category Power Supply Chip
Pins 9

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Dropout Voltage VDROP 4 8 mV VEN=VIN, VOUT(S)=3.3V, IOUT=1mA 6
Dropout Voltage 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 VOUT2 50 80 mV VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)>5.3V 6
Temperature Stability -50 50 ppm/℃ VIN=VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ 6
GND Current IGND 1.5 2.3 3.5 uA VEN=VIN, no load, VOUT(S)>5.3V 6
Shutdown Current ISHUT 0.1 1 uA VIN=40.0V, VEN=0 6
Input Voltage VIN 2.2 40 V 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
Short Circuit Current ISHORT 65 mA VIN=VEN=VOUT(S)+2.0V, VOUT=0V 6
PSRR PSRR 79 dB f=100Hz, IOUT=10mA 6
PSRR PSRR 62 dB f=1kHz, IOUT=10mA 6
PSRR PSRR 48 dB f=10kHz, IOUT=10mA 6
PSRR PSRR 40 dB f=100kHz, IOUT=10mA 6
EN High Level Voltage VENH 1.5 40 V 6
EN Low Level Voltage VENL 0 0.6 V 6
EN High Level Current IENH -0.1 0.1 uA VIN=40V, VEN=VIN 6
EN Low Level Current IENL -0.1 0.1 uA VIN=40V, VEN=0 6
Over Temperature Protection OTP 170 ℃ IOUT=1mA 6
Input Voltage VIN -0.3 45 V Ta=25℃ 5
Power Dissipation ESOP8 PD 1800 mW ESOP8 5
Thermal Resistance ESOP8 RθJA 80 ℃/W ESOP8 5
Operating Ambient Temperature Topr -40 85 ℃ 5
Storage Temperature Tstg -40 125 ℃ 5
ESD Protection HBM ESD 5000 V HBM 5

CAD (KiCad official)

  • Symbol: MD85EF0SF4
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: md85ef0sf4-etched.step / md85ef0sf4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md85ef0sf4.step / md85ef0sf4.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 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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