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LM4040B25IDBZT

Texas Instruments · Voltage Reference · SOT-23-3

LM4040B25IDBZT 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 output Shunt reference voltage cathode output terminal providing 2.5V nominal with 0.2% initial accuracy, ±100 ppm/°C temperature coefficient, and 45 μA to 15 mA operating current range over -40°C to 85°C.
2 ANODE power_in Shunt reference anode terminal serving as ground or common return, typically connected to system ground or negative power supply.
3 * unconnected Parasitic Schottky diode terminal between pins 2 and 3 in SOT-23 package; must be left floating or connected to anode, preferably to anode in high-EMI or high-frequency switching noise environments.

Key specifications

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

CAD (KiCad official)

  • Symbol: LM4040B25IDBZT
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: lm4040b25idbzt-etched.step / lm4040b25idbzt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040b25idbzt.step / lm4040b25idbzt.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (62 pp, sha256 68faec55d71e5cd5, retrieved 2026-10-06, 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 0.3, primary claude-haiku-4-5-20251001 (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