component
TL431AQDBVT
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, 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
markdownTL431AQDBVT
Texas Instruments · Voltage Reference · SOT-23-5
TL431AQDBVT from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No internal connection; leave unconnected or connect to ANODE per application need. |
| 2 | SUBSTRATE | passive | Pin is attached to the die substrate; must be connected to ANODE or left open - do not connect to any other net. |
| 3 | CATHODE | bidirectional | Parallel regulator cathode (I/O); regulated operating range VKA = Vref (≈2.495 V) to 36 V, continuous IKA 1 mA to 100 mA, dynamic impedance 0.2 Ω typ at f ≤ 1 kHz. |
| 4 | REF | input | Voltage reference threshold input relative to ANODE; internal 2.495 V virtual reference, Iref typ 2 µA / max 4 µA (VKA = Vref, IKA = 10 mA); absolute maximum input current 10 mA - must not be left floating. |
| 5 | ANODE | power_in | Common anode; serves as the device ground reference, typically connected to GND; output impedance 0.2 Ω typ. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TL431AQDBVT - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tl431aqdbvt-etched.step/tl431aqdbvt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431aqdbvt.step/tl431aqdbvt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (86 pp, sha256
313277b9351e61ed, retrieved 2026-09-27, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).