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MD7021

Public Made by Adom

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Shanghai Mingda Microelectronics Supervisor And Reset ICs, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD7021

Shanghai Mingda Microelectronics · Supervisor And Reset ICs · SOT-23-3L

MD7021 from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 output Detector output (NMOS open drain for MD7021, active low) that goes low when VDD falls below the 2.1V detect voltage; sink current is 2 mA typ. at VOUT=0.2V, and output current is limited to 10mA max.
2 GND power_in Ground reference (VSS) for the voltage detector.
3 VDD power_in Supply and voltage-sense input with 1.5V to 15V operating range for MD7021 and an absolute maximum of 18V.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-3L
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
Hi→Lo Detectable Voltage VDET 2.037 2.1 2.163 V TA=25℃ 4
Hysteresis Width VHYS 0.02 0.05 0.07 % 4
Operating Current IDD 1.2 3 uA 3.1, No load 4
Operating Voltage VDD 1.5 15 V 4
Output Sink Current IOL 1 2 mA VDD 2, VOUT=0.2V 4
Temperature Coefficient △VDET/△TA -0.5 0.5 mV/℃ 0℃<Ta<70℃ 4
Supply Voltage -0.3 18 V 1
Output Current 10 mA 1
Power Consumption 250 mW SOT23-/5 package 1
Operating Temperature -40 85 ℃ 1
Storage Temperature -50 125 ℃ 1

CAD (KiCad official)

  • Symbol: MD7021
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: md7021-etched.step / md7021-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7021.step / md7021.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 a73a565d183efa3d, retrieved 2026-10-19, 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