component
LM431ACMX
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOIC-8. 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
markdownLM431ACMX
Texas Instruments · Voltage Reference · SOIC-8
LM431ACMX from Texas Instruments, in a SOIC-8. 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 | Cathode | bidirectional | Shunt current/regulated output voltage node; maximum voltage 37 V, continuous cathode current -10 to 150 mA. |
| 2 | Anode | power_in | Anode pin, normally grounded. |
| 3 | Anode | power_in | Anode pin, normally grounded. |
| 4 | NC | unconnected | Not internally connected. |
| 5 | NC | unconnected | Not internally connected. |
| 6 | Anode | power_in | Anode pin, normally grounded. |
| 7 | Anode | power_in | Anode pin, normally grounded. |
| 8 | Reference | input | Reference pin for adjustable output voltage divider; reference input current maximum 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM431ACMX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm431acmx-etched.step/lm431acmx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm431acmx.step/lm431acmx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
9c0bcff4967eaad2, 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).