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ATL431LIAQDBZRQ1

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

componentpower management (pmic)atl431liaqdbzrq1factory-2.0.0extractor-text

Verified ATL431LIAQDBZRQ1

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATL431LIAQDBZRQ1 · SOT-23-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 37-page datasheet
  • ✓distributor: lcsc C1852129, digikey 296-ATL431LIAQDBZRQ1TR-ND, mouser 595-ATL431LIAQDBZRQ1
  • ✓family: SOT-23-3
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-s25bu9fl/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: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atl431liaqdbzrq1.kicad_sym✓ atl431liaqdbzrq1.kicad_mod✓ atl431liaqdbzrq1.step
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3D Model

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Symbol & Footprint

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Contents

README

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ATL431LIAQDBZRQ1

Texas Instruments · Voltage Reference · SOT-23-3

ATL431LIAQDBZRQ1 from Texas Instruments, in a SOT-23-3. 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 CATHODE bidirectional Shunt current/voltage input, with cathode voltage up to 36 V recommended and continuous cathode current of 0.08 mA to 15 mA.
2 REF input Threshold reference input relative to the common anode, with reference input current IREF of 0.4 µA maximum.
3 ANODE power_in Common pin, normally connected to ground, to which all voltages are referenced.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-3
Category Power Management (PMIC)
Pins 3

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 (A grade) VREF 2475 2500 2525 mV VKA = Vref, IKA = 1 mA 5
Deviation of reference input voltage over full temperature range VI(dev) 10 27 mV VKA = Vref, IKA = 1 mA; ATL43xLIxQ devices 5
Ratio of change in reference voltage to change in cathode voltage ΔVref/ΔVKA -1.4 -2.7 mV/V IKA = 1 mA; ΔVKA = 10 V - Vref 5
Ratio of change in reference voltage to change in cathode voltage ΔVref/ΔVKA -1 -2 mV/V IKA = 1 mA; ΔVKA = 36 V - 10 V 5
Reference input current Iref 0.2 0.4 µA IKA = 1 mA, R1 = 10kΩ, R2 = ∞ 5
Deviation of reference input current over full temperature range II(dev) 0.1 0.3 µA IKA = 1 mA, R1 = 10kΩ, R2 = ∞ 5
Minimum cathode current for regulation Imin 65 80 µA VKA = Vref 5
Off-state cathode current Ioff 0.1 1 µA VKA = 36 V, Vref = 0 5
Dynamic impedance /ZKA/ 0.65 0.75 Ω VKA = Vref, IKA = 1 mA to 15 mA 5
Cathode voltage VKA 36 V lower limit printed as VREF 4
Continuous cathode current range IKA 0.08 15 mA 4
Operating free-air temperature TA -40 125 C ATL43xLIxQ 4
Cathode voltage VKA 37 V with respect to ANODE 4
Continuous cathode current range IKA -10 18 mA 4
Reference input current II(ref) -5 10 mA 4
Operating junction temperature range TJ -40 150 C 4
Storage temperature range Tstg -65 150 C 4
Electrostatic discharge, human body model V(ESD) -4000 4000 V HBM per AEC Q100-002 4
Electrostatic discharge, charged-device model V(ESD) -1000 1000 V CDM per AEC Q100-011 4
Junction-to-ambient thermal resistance RθJA 371.7 C/W DBZ 3-pin package 4
Junction-to-case (top) thermal resistance RθJC(top) 145.9 C/W DBZ 3-pin package 4
Junction-to-board thermal resistance RθJB 104.7 C/W DBZ 3-pin package 4
Junction-to-top characterization parameter ψJT 23.9 C/W DBZ 3-pin package 4
Junction-to-board characterization parameter ψJB 102.9 C/W DBZ 3-pin package 4

CAD (KiCad official)

  • Symbol: ATL431LIAQDBZRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: atl431liaqdbzrq1-etched.step / atl431liaqdbzrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atl431liaqdbzrq1.step / atl431liaqdbzrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 babda1ee47f24dd9, retrieved 2026-11-05, 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