component
LMV431AIMFX
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLMV431AIMFX
Texas Instruments · Voltage Reference · SOT-23
LMV431AIMFX from Texas Instruments, 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 (adjust) input; a two-resistor divider from the cathode to this pin sets the cathode voltage around the internal 1.24-V band-gap reference (shorting cathode to REF gives VREF = 1.24 V); reference input current is typically 0.15 µA (max 0.5 µA) and this pin is rated for a continuous input current of -0.05 mA to 3 mA (Absolute Maximum Ratings). |
| 2 | CATHODE | passive | Cathode terminal of the shunt regulator, adjustable from 1.24 V up to 30 V (Recommended Operating Conditions); absolute maximum cathode voltage is 35 V, continuous cathode current is rated -30 mA to 30 mA, dynamic output impedance is 0.25 Ω typ, and minimum cathode current for regulation is 55 µA typ (80 µA max). |
| 3 | ANODE | passive | Anode (return) terminal of the shunt regulator, typically tied to circuit ground/common in shunt-regulator applications. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LMV431AIMFX - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lmv431aimfx-etched.step/lmv431aimfx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmv431aimfx.step/lmv431aimfx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
ba81200a24b0548f, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).