TLV431AFTA

@@ -0,0 +1,44 @@+# TLV431AFTA++**Diodes Incorporated** · Voltage Reference · SOT-23++TLV431AFTA from Diodes Incorporated, 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 to the 1.24 V bandgap reference; drives the internal error amplifier that regulates cathode current so that V(REF) equals VREF. Typical input current 0.15 uA (0.5 uA max); absolute maximum input current range -0.05 to +3 mA. |+| 2 | CATHODE | power_in | Cathode (K). Regulated shunt terminal; sinks current from the load/bias resistor to maintain V(REF) = 1.24 V. Recommended operating cathode voltage VREF to 18 V; cathode current 0.1 mA to 15 mA (absolute max +/-20 mA, VKA max 20 V). Minimum cathode current for regulation IKMIN ~ 55 uA typ. |+| 3 | ANODE | power_in | Anode (A). Common return terminal; all datasheet voltages are referenced to ANODE. Normally tied to the low-voltage rail (GND) of the regulated network. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `TLV431AFTAFTA`+- `TLV431AFTAE5`+- `TLV431AFTAH6`++## CAD (KiCad official)++- Symbol: `TLV431AFTA`+- 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:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/TLV431AFTA.pdf) (17 pp, sha256 `bfc6983112ce20da`, retrieved 2026-08-17, tier: manufacturer)+- **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](docs/tlv431afta-datasheet.pdf)

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