component

ATL431LIBQDBZRQ1

Public Made by Adom

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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)atl431libqdbzrq1factory-2.0.0extractor-text

Verified ATL431LIBQDBZRQ1

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: ATL431LIBQDBZRQ1 · 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 C2867954, digikey 296-ATL431LIBQDBZRQ1TR-ND, mouser 595-ATL431LIBQDBZRQ1
  • ✓family: SOT-23-3
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-w5twjah7/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✓ atl431libqdbzrq1.kicad_sym✓ atl431libqdbzrq1.kicad_mod✓ atl431libqdbzrq1.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 1d ago
viewers atl431libqdbzrq1: viewers · Ray 1d ago
atl431libqdbzrq1-etched.glb Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1-etched.step atl431libqdbzrq1: factory component page (tier=mfr) · Ray 1d ago
atl431libqdbzrq1-hero.glb atl431libqdbzrq1: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
atl431libqdbzrq1-hero.overlay.json Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1.glb Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1.kicad_mod Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1.kicad_sym Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1.lbr Publish 0.1.0 · Ray 1d ago
atl431libqdbzrq1.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 1d ago

ATL431LIBQDBZRQ1

Texas Instruments · Voltage Reference · SOT-23-3

ATL431LIBQDBZRQ1 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; the datasheet specifies IKA from 0.08 mA (min) to 15 mA (max) and VKA up to 36 V.
2 REF input Threshold reference input relative to the common anode, with reference input current IREF limited to 0.4 μA (max).
3 ANODE power_in Common pin, normally connected to ground, and the reference for all voltages on the device.

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 (B grade) VREF 2487 2500 2512 mV VKA = Vref, IKA = 1 mA 5
Deviation of reference input voltage over full temperature range (Q devices) VI(dev) 10 27 mV VKA = Vref, IKA = 1 mA 5
Ratio of change in reference voltage to change in cathode voltage, dVKA = 10 V - Vref 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, dVKA = 36 V - 10 V 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 (absolute maximum) VKA 37 V 4
Continuous cathode current range (absolute maximum) IKA -10 18 mA 4
Reference input current (absolute maximum) II(ref) -5 10 mA 4
Operating junction temperature range TJ -40 150 C 4
Storage temperature range Tstg -65 150 C 4
Cathode voltage (recommended operating) VKA 36 V Minimum given as VREF 4
Continuous cathode current range (recommended operating) IKA 0.08 15 mA 4
Operating free-air temperature (ATL43xLIxQ) TA -40 125 C 4
Junction-to-ambient thermal resistance RθJA 371.7 C/W DBZ, 3 pins 4
Junction-to-case (top) thermal resistance RθJC(top) 145.9 C/W DBZ, 3 pins 4
Junction-to-board thermal resistance RθJB 104.7 C/W DBZ, 3 pins 4
Junction-to-top characterization parameter ψJT 23.9 C/W DBZ, 3 pins 4
Junction-to-board characterization parameter ψJB 102.9 C/W DBZ, 3 pins 4

CAD (KiCad official)

  • Symbol: ATL431LIBQDBZRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: atl431libqdbzrq1-etched.step / atl431libqdbzrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atl431libqdbzrq1.step / atl431libqdbzrq1.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