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TL4050B25QDCKR

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Texas Instruments Voltage Reference, SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TL4050B25QDCKR

Texas Instruments · Voltage Reference · SC-70-5

TL4050B25QDCKR from Texas Instruments, in a SC-70-5. 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 ANODE passive Anode (reference return) of the two-terminal shunt reference; the cathode current IZ returns here.
2 * passive Starred pin; TI recommends connecting it to the anode in applications with high EMI (such as near transformers or other EMI sources) or significant high-frequency switching noise.
3 CATHODE passive Cathode of the shunt reference, the regulated output VZ (2.5 V for the 25 option) biased through a series resistor with 15 mA maximum recommended cathode current.
4 NC unconnected No internal connection.
5 NC unconnected No internal connection.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SC-70-5
Category Power Management (PMIC)
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse breakdown voltage tolerance, initial (25°C) ΔVZ -5 5 mV IZ = 100μA, TA = 25°C 6
Reverse breakdown voltage tolerance, full range ΔVZ -18 18 mV IZ = 100μA, full range TA = -40°C to 125°C 6
Minimum cathode current IZ,min 41 60 μA TA = 25°C 6
Minimum cathode current, full range IZ,min 65 μA full range TA = -40°C to 125°C 6
Average temperature coefficient of VZ αVZ -20 20 ppm/°C IZ = 10mA, TA = 25°C 6
Average temperature coefficient of VZ αVZ -15 15 ppm/°C IZ = 1mA, TA = 25°C 6
Average temperature coefficient of VZ αVZ -50 50 ppm/°C IZ = 100μA, full range TA = -40°C to 125°C 6
Change of VZ with cathode current VZ 0.3 0.8 mV IZ,min < IZ < 1mA, TA = 25°C 6
Change of VZ with cathode current, full range VZ 1.2 mV IZ,min < IZ < 1mA, full range TA = -40°C to 125°C 6
Change of VZ with cathode current VZ 2.3 6 mV 1mA < IZ < 15mA, TA = 25°C 6
Change of VZ with cathode current, full range VZ 8 mV 1mA < IZ < 15mA, full range TA = -40°C to 125°C 6
Reverse breakdown voltage VZ 2.5 V IZ = 100μA, TA = 25°C 6
Reverse dynamic impedance ZZ 0.3 Ω IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, TA = 25°C 6
Broadband noise eN 41 μVRMS IZ = 100μA, 10Hz ≤ f ≤ 10kHz, TA = 25°C 6
Long-term stability of reverse breakdown voltage 120 ppm t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA 6
Thermal hysteresis VHYST 0.7 mV ΔTA = -40°C to 125°C 6
Continuous cathode current IZ -10 20 mA 4
Operating virtual junction temperature TJ 150 °C 4
Storage temperature range Tstg -65 150 °C 4
Cathode current IZ 15 mA 4
Ambient temperature, I grade (TL4050xI) TA -40 85 °C natural ventilation, I temperature grade 4
Ambient temperature, Q grade (TL4050xQ) TA -40 125 °C natural ventilation, Q temperature grade 4
Package thermal impedance, DCK (SC70) θJA 252 °C/W DCK package, per JESD 51-7 4

CAD (KiCad official)

  • Symbol: TL4050B25QDCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: tl4050b25qdckr-etched.step / tl4050b25qdckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl4050b25qdckr.step / tl4050b25qdckr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 9518f91a68f71d48, retrieved 2026-10-11, 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-sonnet-5-5 (text+vision), consensus claude-opus-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