TLV431BFTA

@@ -0,0 +1,50 @@+# TLV431BFTA++**Diodes Incorporated** · Voltage Reference · SOT-23++TLV431BFTA 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. High-impedance sense pin of the internal error amplifier; compared against the internal 1.24V bandgap VREF. The external R1/R2 divider from CATHODE to ANODE ties into this pin to program VKA = VREF x (1 + R1/R2). Typical input bias current 0.15 uA (0.5 uA max). |+| 2 | ANODE | power_in | Anode (return / ground) terminal. Common negative rail of the internal shunt element; all internal voltages are referenced to this pin. In a standard shunt-regulator topology this connects to system GND. |+| 3 | CATHODE | power_out | Cathode (regulated) terminal. Drain of the internal shunt output transistor; sinks current from VIN through the external series resistor R3 to maintain VKA at the programmed setpoint. Absolute max VKA = 20V, continuous IKA = -20 to +20 mA, minimum cathode current for regulation approximately 55 uA typ (80 uA max). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++Same part, different packaging or reel option.++- `TLV431BFTAAFTA`+- `TLV431BFTA`+- `TLV431BFTATFTA`+- `TLV431BFTAAE5TA`+- `TLV431BFTABE5TA`+- `TLV431BFTAAH6TA`+- `TLV431BFTABH6TA`++## CAD (KiCad official)++- Symbol: `TLV431BFTA`+- 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/TLV431BFTA.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/tlv431bfta-datasheet.pdf)

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