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MX431

Public Unreviewed

by Ray

Mixic Voltage Reference, SOT-23. Datasheet-verified pinout, 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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MX431

Mixic · Voltage Reference · SOT-23

MX431 from Mixic, in a SOT-23. 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 REF input Reference/feedback input. Compared internally against the 2.5 V bandgap reference; the device sinks current from CATHODE to ANODE to regulate this pin to VREF. Typical bias current 1.5 µA (max 4 µA at IKA=10 mA, R1=10 kΩ).
2 CATHODE power_in Cathode (K) shunt terminal. Sinks the regulated current (1 mA to 100 mA operating; 40 V absolute max, 36 V recommended max). Off-state leakage 0.05 µA typ at VKA=36 V, VREF=0.
3 ANODE power_in Anode (A) / ground return terminal for the shunt current path.

Key specifications

Parameter Value
Manufacturer Mixic
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • MX431
  • MX431T

CAD (KiCad official)

  • Symbol: MX431
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Mixic datasheet (9 pp, sha256 69c61f26840d1f7c, 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