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ATL431BQDBZR

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs atl431bqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers atl431bqdbzr: viewers · Ray
atl431bqdbzr-etched.fit.json atl431bqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
atl431bqdbzr-etched.glb atl431bqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
atl431bqdbzr-etched.step atl431bqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
atl431bqdbzr.glb Publish 0.1.0 · Ray
atl431bqdbzr.kicad_mod Publish 0.1.0 · Ray
atl431bqdbzr.kicad_sym Publish 0.1.0 · Ray
atl431bqdbzr.lbr Publish 0.1.0 · Ray
atl431bqdbzr.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
page.json atl431bqdbzr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md atl431bqdbzr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

ATL431BQDBZR

Texas Instruments · Voltage Reference · SOT-23

ATL431BQDBZR from Texas Instruments, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CATHODE passive Shunt current/voltage input (cathode of the internal shunt reference). Sinks the regulated shunt current; Vcathode is programmed by external divider tied to REF. Absolute max VKA = 40 V, IKA continuous -100 to 150 mA.
2 REF input Reference/threshold input, sensed relative to the common anode. Internal bandgap regulates so VREF ~= 2.5 V (2487-2512 mV for B-grade). Reference input current typ 30 nA (max 150 nA); absolute max I(ref) -0.05 to 10 mA.
3 ANODE passive Common pin, normally connected to ground. All voltages in the datasheet are referenced to ANODE.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23
Category PMIC
Pins 3

Ordering variants

  • ATL431BQDBZR
  • ATL431BQDBZRDBZT

CAD (KiCad official)

  • Symbol: ATL431BQDBZR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: atl431bqdbzr-etched.step / atl431bqdbzr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atl431bqdbzr.step / atl431bqdbzr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
atl431bqdbzr.step 59 KB You want the bare part, or you mark your own boards.
atl431bqdbzr-etched.step 1.9 MB You want the part with ATL431BQDBZR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 481 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Texas Instruments datasheet (31 pp, sha256 ef107d8a8d5c2bab, retrieved 2026-08-17, tier: manufacturer)
  • 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF