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MD7218E33SF4

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

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MD7218E33SF4

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8

MD7218E33SF4 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 3.3V output pin (±2%, up to 1A), requiring a low-ESR ceramic output capacitor of 2.2uF typical and not to exceed VIN+0.3V.
2 NC unconnected No connection.
3 NC unconnected No connection.
4 EN input Active-high enable input; VEN high level is 1.5V to 18V and low level is 0V to 0.5V.
5 GND power_in Ground.
6 NC unconnected No connection.
7 NC unconnected No connection.
8 VIN power_in Power supply input with a 2.2V to 18V operating range (absolute maximum 20V), with a 2.2uF typical input capacitor placed close to the IC.
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 Management (PMIC)
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
Output voltage accuracy VOUT(S) -2 2 % Highly accurate output voltage, printed ±2% 1
Dropout Voltage VDROP 3 8 mV VOUT(S)=3.3V, IOUT=1mA 5
Dropout Voltage VDROP 1000 1300 mV VOUT(S)=3.3V, IOUT=1A 5
Line Regulation ΔVOUT/ΔVIN 0.01 0.02 %/V VOUT(S)+2V≤VIN≤18V, IOUT=1mA 5
Load Regulation, VOUT(S)≤5.0V VOUT 80 mV VIN=VOUT(S)+2V, 1mA≤IOUT≤1A, VOUT(S)≤5.0V 5
Temperature Stability ΔVOUT/ΔT -50 50 ppm/℃ VIN=VOUT(S)+2V, IOUT=1mA, -40℃≤Ta≤125℃ 5
GND Current, no load, VOUT(S)≤5.0V IGND 1 1.6 2 µA No load, VOUT(S)≤5.0V 5
Shutdown Current ISHUT 0.1 1 µA VIN=18V, VEN=0 5
Input Voltage VIN 2.2 18 V 5
Maximum Output Current IOUTMAX 1 A 5
Current Limit ILIM 1.5 VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) 5
Power Supply Rejection Ratio, f=10Hz PSRR 75 dB f=10Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) 5
Power Supply Rejection Ratio, f=100Hz PSRR 80 dB f=100Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) 5
Power Supply Rejection Ratio, f=1kHz PSRR 65 dB f=1kHz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) 5
Short Circuit Current ISHORT 30 mA VIN=VOUT(S)+2.0V, VOUT=0V 5
EN 'H' Level Voltage VENH 1.5 18 V 5
EN 'L' Level Voltage VENL 0 0.5 V 5
EN 'H' Level Current IENH -0.1 0.1 µA VIN=18V, VEN=VIN 5
EN 'L' Level Current IENL -0.1 0.1 µA VIN=18V, VEN=0 5
Over Temperature Protection OTP 150 ℃ IOUT=1mA 5
Input Voltage (absolute maximum) VIN -0.3 20 V 4
Output Voltage (absolute maximum, Vss-0.3 ~ VIN+0.3V) VOUT -0.3 0.3 V Printed as Vss-0.3 ~ VIN+0.3V; min referenced to Vss, max referenced to VIN 4
Power Dissipation, ESOP8 PD 800 mW ESOP8 package 4
Operating Ambient Temperature Topr -40 85 ℃ 4
Storage Temperature Tstg -40 125 ℃ 4
ESD Protection, HBM ESD HBM 4000 V HBM 4
Thermal Resistance Junction-to-Ambient, ESOP8 RθJA 80 ℃/W ESOP8 package 4

CAD (KiCad official)

  • Symbol: MD7218E33SF4
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: md7218e33sf4-etched.step / md7218e33sf4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7218e33sf4.step / md7218e33sf4.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (16 pp, sha256 a1c66b635dda8f58, retrieved 2026-10-20, 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