component
TLV431AQDBVRQ1
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
markdownTLV431AQDBVRQ1
Texas Instruments · Voltage Reference · SOT-23-5
TLV431AQDBVRQ1 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; this pin is not used electrically. |
| 2 | * | passive | Substrate connection; the datasheet requires this pin to be connected to ANODE or left open. |
| 3 | CATHODE | bidirectional | Shunt current/voltage input; the recommended cathode current is 0.1 mA to 15 mA with cathode voltage from VREF to 6 V, and the absolute maximum cathode voltage is 7 V. |
| 4 | REF | input | Reference input threshold relative to the common ANODE; it requires Iref of at least 0.5 µA and must not be left floating. |
| 5 | ANODE | power_in | Common pin, normally grounded; all voltages are referenced to the anode terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Cathode voltage (absolute maximum) | VKA | 7 | V | Referenced to anode | 4 | ||
| Continuous cathode current range (absolute maximum) | IK | -20 | 20 | mA | 4 | ||
| Reference current range (absolute maximum) | Iref | -0.05 | 3 | mA | 4 | ||
| Operating virtual junction temperature (absolute maximum) | TJ | 150 | °C | 4 | |||
| Storage temperature range (absolute maximum) | Tstg | -65 | 150 | °C | 4 | ||
| Cathode voltage (recommended operating) | VKA | 6 | V | Minimum printed as VREF | 4 | ||
| Cathode current (recommended operating) | IK | 0.1 | 15 | mA | 4 | ||
| Operating free-air temperature (recommended operating) | TA | -40 | 125 | °C | Natural ventilation, TLV431x-Q1 | 4 | |
| Reference voltage | VREF | 1.228 | 1.24 | 1.252 | V | VKA = VREF, IK = 10mA, TA = 25°C | 5 |
| Reference voltage over full temperature range | VREF | 1.209 | 1.271 | V | VKA = VREF, IK = 10mA, TA = full range (-40°C to 125°C) | 5 | |
| Reference voltage deviation over temperature range | VREF(dev) | 11 | 31 | mV | VKA = VREF, IK = 10mA, full temperature range | 5 | |
| Change in reference voltage with cathode voltage ratio | ΔVREF/ΔVKA | -1.5 | -2.7 | mV/V | VKA = VREF to 6V, IK = 10mA | 5 | |
| Reference terminal current | Iref | 0.15 | 0.5 | µA | IK = 10mA, R1 = 10kΩ, R2 = open | 5 | |
| Reference current deviation over temperature range | Iref(dev) | 0.15 | 0.5 | µA | IK = 10mA, R1 = 10kΩ, R2 = open, full temperature range | 5 | |
| Minimum cathode current for regulation | IK(min) | 55 | 100 | µA | VKA = VREF | 5 | |
| Off-state cathode current | IK(off) | 0.001 | 0.1 | µA | VREF = 0, VKA = 6V | 5 | |
| Dynamic impedance | /zKA/ | 0.25 | 0.4 | Ω | VKA = VREF, f ≤ 1kHz, IK = 0.1mA to 15mA | 5 | |
| Junction-to-ambient thermal resistance (DBV, 5-pin) | RθJA | 206 | °C/W | 4 | |||
| Junction-to-case (top) thermal resistance (DBV, 5-pin) | RθJC(top) | 131 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
TLV431AQDBVRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tlv431aqdbvrq1-etched.step/tlv431aqdbvrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tlv431aqdbvrq1.step/tlv431aqdbvrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
4dabf6844b9bd0e1, retrieved 2026-10-10, 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 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(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).