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LM4040B50IDCKR

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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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Generated by kicad-footprint-generator · KiCad file format 20260206
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viewers lm4040b50idckr: viewers · Ray 23d ago
lm4040b50idckr-etched.glb lm4040b50idckr: factory component page (tier=lcsc) · Ray 23d ago
lm4040b50idckr-etched.step lm4040b50idckr: factory component page (tier=lcsc) · Ray 23d ago
lm4040b50idckr-hero.glb lm4040b50idckr: hero GLB from the etched model (keeps the MPN mark) · Ray 23d ago
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package.json Publish 0.1.0 · Ray 23d ago
page.json lm4040b50idckr: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 17d ago
README.md lm4040b50idckr: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 17d ago

LM4040B50IDCKR

Texas Instruments · Voltage Reference · SC-70-5

LM4040B50IDCKR 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 output Common pin, typically connected to ground, and the reference terminal against which the cathode voltage is set; the datasheet gives no separate electrical limits for it.
2 * input Must be left floating or connected to the anode; TI recommends connecting it to the anode in applications with high EMI or significant high-frequency switching noise.
3 CATHODE bidirectional Shunt current/voltage input; the cathode current IZ must stay within 15 mA recommended maximum (25 mA absolute maximum continuous, -10 mA minimum) and at or above IZ,min for regulation.
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 (25°C), B grade ΔVZ -10 10 mV IZ = 100μA, 25°C 17
Reverse breakdown voltage tolerance (full range), B grade ΔVZ -43 43 mV IZ = 100μA, full range TA = –40°C to 85°C 17
Average temperature coefficient of VZ αVZ -30 30 ppm/°C IZ = 10mA, 25°C 17
Average temperature coefficient of VZ αVZ -20 20 ppm/°C IZ = 1mA, 25°C 17
Average temperature coefficient of VZ αVZ -100 100 ppm/°C full range TA = –40°C to 85°C 17
Minimum cathode current IZ,min 65 89 μA 25°C 17
Minimum cathode current IZ,min 95 μA full range TA = –40°C to 85°C 17
Reverse breakdown voltage change with cathode current VZ 0.5 1 mV IZ,min < IZ < 1mA, 25°C 17
Reverse breakdown voltage change with cathode current VZ 1.4 mV IZ,min < IZ < 1mA, full range TA = –40°C to 85°C 17
Reverse breakdown voltage change with cathode current VZ 3.5 8 mV 1mA < IZ < 15mA, 25°C 17
Reverse breakdown voltage change with cathode current VZ 12 mV 1mA < IZ < 15mA, full range TA = –40°C to 85°C 17
Reverse dynamic impedance ZZ 0.5 1.1 Ω IZ = 1mA, f = 120Hz, IAC = 0.1IZ, 25°C 17
Reverse breakdown voltage VZ 5 V IZ = 100μA, 25°C 17
Wideband noise eN 80 μVRMS IZ = 100μA, 10Hz ≤ f ≤ 10kHz, 25°C 17
Long-term stability of reverse breakdown voltage 120 ppm t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA 17
Thermal hysteresis VHYST 0.08 % ΔTA = –40°C to 125°C 17
Continuous cathode current IZ -10 25 mA 5
Operating junction temperature TJ 150 °C 5
Storage temperature range Tstg -65 150 °C 5
Cathode current IZ 15 mA 5
Ambient temperature, LM4040xxxI TA -40 85 °C LM4040xxxI 5
Junction-to-ambient thermal resistance RθJA 252 °C/W DCK (5-pin) package 5

CAD (KiCad official)

  • Symbol: LM4040B50IDCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: lm4040b50idckr-etched.step / lm4040b50idckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040b50idckr.step / lm4040b50idckr.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 2026-10-09, 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-5-5 (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