component

TL431AQDBZR

Public Made by Adom

by adom

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

componentpower management (pmic)tl431aqdbzrfactory-2.0.0extractor-text
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs tl431aqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers tl431aqdbzr: viewers · Ray 1mo ago
package.json tl431aqdbzr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json tl431aqdbzr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md Initial commit: component/tl431aqdbzr · Ray 1mo ago
tl431aqdbzr-etched.fit.json tl431aqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431aqdbzr-etched.glb tl431aqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431aqdbzr-etched.step tl431aqdbzr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431aqdbzr.glb Publish 0.1.0 · Ray 1mo ago
tl431aqdbzr.kicad_mod Publish 0.1.0 · Ray 1mo ago
tl431aqdbzr.kicad_sym Publish 0.1.0 · Ray 1mo ago
tl431aqdbzr.lbr Publish 0.1.0 · Ray 1mo ago
tl431aqdbzr.step Publish 0.1.0 · Ray 1mo ago

TL431AQDBZR

Texas Instruments · Voltage Reference · SOT-23-3

TL431AQDBZR from Texas Instruments, in a SOT-23-3. 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 REF input Reference/threshold input pin with internal 2.495V reference; requires minimum 2µA input bias current and connects to external resistor divider network that programs the output voltage.
2 CATHODE output Cathode regulated output pin that maintains programmable voltage from Vref to 36V; requires minimum 0.4mA operating current for regulation and supports up to 100mA sink capability.
3 ANODE power_in Anode common/ground pin; device reference node for voltage regulation and current operation, typically connected to system ground or negative supply.

Key specifications

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

CAD (KiCad official)

  • Symbol: TL431AQDBZR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: tl431aqdbzr-etched.step / tl431aqdbzr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431aqdbzr.step / tl431aqdbzr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (86 pp, sha256 0eb18c491f5517a3, retrieved 2026-09-18, 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 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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