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MD6127C27

Public Made by Adom

by adom

Shanghai Mingda Microelectronics Supervisor and Reset ICs, SOT-23-3L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Contents

README

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MD6127C27

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

MD6127C27 from Shanghai Mingda Microelectronics, in a SOT-23-3L. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 DS input Delay-time select input. Tie low to select the internal ~200 ms release delay (Td1); tie high to bypass most of the counter chain for the short ~220 µs delay (Td2). Must be strapped to a fixed logic level (VSH ≥ 1.0 V or VSL ≤ 0.3 V at VDD=6.0 V); do not float.
2 VSS power_in Ground / negative supply reference for the IC.
3 NC unconnected No internal connection. Leave floating or tie to VSS.
4 VOUT output Voltage detection output. Goes low when VDD falls below -VDET (2.7 V nominal) and returns high after the internal delay (Td1 ≈ 200 ms) once VDD rises above +VDET. NMOS variants are open-drain and require an external pull-up (max sink 50 mA, VOL specified at IOUT= 3 mA for VDD≥2.4 V); CMOS variants are push-pull between VSS and VDD.
5 VDD power_in Supply input and monitored voltage. Operating range 1 V to 12 V (absolute max VDD-VSS = 15 V). This is the rail whose value is compared against the internal 2.7 V reference to generate the reset/detection signal.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-3L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • MD6127C27C
  • MD6127C27N

CAD (KiCad official)

  • Symbol: MD6127C27
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: md6127c27-etched.step / md6127c27-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md6127c27.step / md6127c27.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (10 pp, sha256 1fab5f41f402e070, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF