component

TL431LIBEDBZRQ1

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)tl431libedbzrq1factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs tl431libedbzrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers tl431libedbzrq1: viewers · Ray 1mo ago
package.json tl431libedbzrq1: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json tl431libedbzrq1: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 26d ago
README.md tl431libedbzrq1: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 26d ago
tl431libedbzrq1-etched.fit.json tl431libedbzrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431libedbzrq1-etched.glb tl431libedbzrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431libedbzrq1-etched.step tl431libedbzrq1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
tl431libedbzrq1.glb Publish 0.1.0 · Ray 1mo ago
tl431libedbzrq1.kicad_mod Publish 0.1.0 · Ray 1mo ago
tl431libedbzrq1.kicad_sym Publish 0.1.0 · Ray 1mo ago
tl431libedbzrq1.lbr Publish 0.1.0 · Ray 1mo ago
tl431libedbzrq1.step Publish 0.1.0 · Ray 1mo ago

TL431LIBEDBZRQ1

Texas Instruments · Voltage Reference · SOT-23-3

TL431LIBEDBZRQ1 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 CATHODE output Regulated output cathode node; accepts continuous cathode current of 0.6 mA to 15 mA and maintains adjustable output voltage from 2.495 V to 36 V.
2 REF input Reference threshold input node; requires reference input current of 0.4 µA maximum and compares feedback voltage with internal 2.495 V reference for regulation.
3 ANODE power_in Common ground anode node; provides the voltage reference potential for regulation and cathode voltage measurement.

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 (TL43xLIB devices, 0.5% grade) Vref 2483 2495 2507 mV VKA = Vref, IKA = 1 mA 5
Deviation of reference input voltage over full temperature range (TL43xLIxE devices) VI(dev) 14 34 mV VKA = Vref, IKA = 1 mA 5
Ratio of change in reference voltage to change in cathode voltage (ΔVKA = 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 (ΔVKA = 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 0.6 mA VKA = Vref 5
Off-state cathode current Ioff 0.1 1 µA VKA = 36 V, Vref = 0 5
Dynamic Impedance /ZKA/ 0.3 0.75 Ω VKA = Vref, IKA = 1 mA to 15 mA 5
Cathode Voltage VKA 36 V 4
Continuous Cathode Current Range IKA 0.6 15 mA 4
Operating Free-Air Temperature (TL43xLIxE) TA -40 150 °C TL43xLIxE 4
Cathode Voltage VKA 37 V All voltage values 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
Junction-to-ambient thermal resistance (DBZ, 3 pins) RθJA 371.7 C/W 4
Junction-to-case (top) thermal resistance (DBZ, 3 pins) RθJC(top) 145.9 C/W 4
Junction-to-board thermal resistance (DBZ, 3 pins) RθJB 104.7 C/W 4
Junction-to-top characterization resistance (DBZ, 3 pins) ψJT 23.9 C/W 4
Junction-to-board characterization resistance (DBZ, 3 pins) ψJB 102.9 C/W 4

CAD (KiCad official)

  • Symbol: TL431LIBEDBZRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: tl431libedbzrq1-etched.step / tl431libedbzrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431libedbzrq1.step / tl431libedbzrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (35 pp, sha256 38f20793e4941c3c, retrieved 2026-09-23, 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-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