component

TL431AQDBVRQ1

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tl431aqdbvrq1factory-2.0.0extractor-text

Verified TL431AQDBVRQ1

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TL431AQDBVRQ1 · SOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 30-page datasheet
  • ✓distributor: lcsc C91733, digikey 296-23433-2-ND, mouser 595-TL431AQDBVRQ1
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-7ut1ecp1/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tl431aqdbvrq1.kicad_sym✓ tl431aqdbvrq1.kicad_mod✓ tl431aqdbvrq1.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 16h ago
viewers tl431aqdbvrq1: viewers · Ray 16h ago
package.json Publish 0.1.0 · Ray 16h ago
page.json Set visibility: public · Ray 16h ago
README.md Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1-etched.glb Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1-etched.step tl431aqdbvrq1: factory component page (tier=mfr) · Ray 16h ago
tl431aqdbvrq1-hero.glb tl431aqdbvrq1: hero GLB from the etched model (keeps the MPN mark) · Ray 16h ago
tl431aqdbvrq1-hero.overlay.json Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1.glb Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1.kicad_mod Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1.kicad_sym Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1.lbr Publish 0.1.0 · Ray 16h ago
tl431aqdbvrq1.step Publish 0.1.0 · Ray 16h ago
verification.json Verified: Published by the parts factory: tier mfr, 5 pins · Ray 16h ago

TL431AQDBVRQ1

Texas Instruments · Voltage Reference · SOT-23-5

TL431AQDBVRQ1 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 connection.
2 NC unconnected Pin 2 is connected internally to ANODE (die substrate) and must be left floating or connected to ANODE.
3 CATHODE passive Shunt current or voltage input; the recommended cathode current for TL431xA-Q1 is 0.7 mA to 100 mA and the cathode voltage is VREF to 36 V.
4 REF input Threshold relative to common anode; reference input current is limited to -50 µA (low) and 10 mA (high) in absolute maximum ratings.
5 ANODE power_in Common pin, normally connected to ground.

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
Reference voltage VREF 2470 2495 2520 mV VKA = VREF, IKA = 10 mA, see Figure 20 5
Deviation of reference voltage over full temperature VI(DEV) 14 34 mV VKA = VREF, IKA = 10 mA, TA = -40°C to 125°C, see Figure 20 5
Ratio of change in reference voltage to change in cathode voltage ΔVREF/ΔVKA -1.4 -2.7 mV/V IKA = 10 mA, ΔVKA = 10 V, VREF, see Figure 21 5
Ratio of change in reference voltage to change in cathode voltage ΔVREF/ΔVKA -1 -2 mV/V IKA = 10 mA, ΔVKA = 36 V, 10 V, see Figure 21 5
Reference current IREF 2 4 µA IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, see Figure 21 5
Deviation of reference current over full temperature II(DEV) 0.8 2.5 µA IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, TA = -40°C to 125°C, see Figure 21 5
Minimum cathode current for regulation IMIN 0.4 0.7 mA VKA = VREF, see Figure 20 5
OFF-state cathode current IOFF 0.1 0.5 µA VKA = 36 V, VREF = 0, see Figure 22 5
Dynamic impedance /ZKA/ 0.2 0.5 Ω IKA = 1 mA to 100 mA, VKA = VREF, f ≤ 1 kHz, see Figure 20 5
Cathode voltage VKA 36 V Minimum given as VREF 4
Cathode current (TL431xA-Q1) IKA 0.7 100 mA TL431xA-Q1 4
Operating free-air temperature TA -40 125 °C 4
Cathode voltage 37 V Voltage values with respect to ANODE 4
Continuous cathode current -100 150 mA 4
Reference input current, low -50 µA Low 4
Reference input current, high 10 mA High 4
Operating junction temperature TJ 150 °C 4
Storage temperature Tstg -65 150 °C 4
Junction-to-ambient thermal resistance (DBV, SOT-23 5-pin) RθJA 215 °C/W DBV (SOT-23), 5 pins 4
Junction-to-case (top) thermal resistance (DBV, SOT-23 5-pin) RθJC(top) 135.2 °C/W DBV (SOT-23), 5 pins 4
Junction-to-board thermal resistance (DBV, SOT-23 5-pin) RθJB 43 °C/W DBV (SOT-23), 5 pins 4
Junction-to-top characterization parameter (DBV, SOT-23 5-pin) ψJT 19.6 °C/W DBV (SOT-23), 5 pins 4
Junction-to-board characterization parameter (DBV, SOT-23 5-pin) ψJB 42.1 °C/W DBV (SOT-23), 5 pins 4

CAD (KiCad official)

  • Symbol: TL431AQDBVRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: tl431aqdbvrq1-etched.step / tl431aqdbvrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431aqdbvrq1.step / tl431aqdbvrq1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 e1937a2597007ea8, retrieved 2026-11-06, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF