component
LMV431AIMF
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. 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
markdownLMV431AIMF
Texas Instruments · Voltage Reference · SOT-23-3
LMV431AIMF from Texas Instruments, in a SOT-23-3. 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; negative feedback from a two-resistor divider tied between cathode and this pin sets the gain of the internal 1.24-V band-gap reference (shorting REF to cathode gives a 1.24-V voltage-follower); typical reference input current is 0.15 µA to 0.5 µA. |
| 2 | CATHODE | passive | Regulated shunt terminal whose voltage is controlled by the REF pin feedback loop; recommended operating cathode current is 0.1 mA to 15 mA (minimum ~55 µA for regulation), cathode voltage up to 30 V, and absolute-maximum continuous cathode current is -30 mA to 30 mA. |
| 3 | ANODE | power_in | Low/return terminal of the shunt regulator (analogous to ground for the device), completing the current path set by the cathode current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LMV431AIMF - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
lmv431aimf-etched.step/lmv431aimf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmv431aimf.step/lmv431aimf.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 2026-09-23, 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).