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LM4040C25IDCKR

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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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docs lm4040c25idckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers lm4040c25idckr: viewers · Ray 1mo ago
lm4040c25idckr-etched.fit.json lm4040c25idckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm4040c25idckr-etched.glb lm4040c25idckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm4040c25idckr-etched.step lm4040c25idckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm4040c25idckr.glb Publish 0.1.0 · Ray 1mo ago
lm4040c25idckr.kicad_mod Publish 0.1.0 · Ray 1mo ago
lm4040c25idckr.kicad_sym Publish 0.1.0 · Ray 1mo ago
lm4040c25idckr.lbr Publish 0.1.0 · Ray 1mo ago
lm4040c25idckr.step Publish 0.1.0 · Ray 1mo ago
package.json lm4040c25idckr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json lm4040c25idckr: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 26d ago
README.md lm4040c25idckr: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray 26d ago

LM4040C25IDCKR

Texas Instruments · Voltage Reference · SC-70-5

LM4040C25IDCKR 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 power_in Ground/return connection; maximum current rating 15mA at cathode during regulation.
2 * passive Substrate connection pin; leave floating or connect to ANODE to reduce EMI in high-noise environments.
3 CATHODE output 2.5V reference voltage output with ±12mV initial tolerance at 25°C; requires minimum 45µA bias current for proper 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 ΔVZ -12 12 mV IZ = 100μA, TA = 25°C 10
Reverse breakdown voltage tolerance ΔVZ -29 29 mV IZ = 100μA, full range TA = -40°C to 85°C 10
Average temperature coefficient of reverse breakdown voltage αVZ -20 20 ppm/°C IZ = 10mA, TA = 25°C 10
Average temperature coefficient of reverse breakdown voltage αVZ -15 15 ppm/°C IZ = 1mA, TA = 25°C 10
Average temperature coefficient of reverse breakdown voltage αVZ -100 100 ppm/°C IZ = 1mA, full range TA = -40°C to 85°C 10
Reverse breakdown voltage change with cathode current VZ 0.3 0.8 mV IZ,min < IZ < 1mA, TA = 25°C 10
Reverse breakdown voltage change with cathode current VZ 1 mV IZ,min < IZ < 1mA, full range TA = -40°C to 85°C 10
Reverse breakdown voltage change with cathode current VZ 2.5 6 mV 1mA < IZ < 15mA, TA = 25°C 10
Reverse breakdown voltage change with cathode current VZ 8 mV 1mA < IZ < 15mA, full range TA = -40°C to 85°C 10
Minimum cathode current IZ,min 45 75 μA TA = 25°C 10
Minimum cathode current IZ,min 80 μA full range TA = -40°C to 85°C 10
Reverse dynamic impedance ZZ 0.3 0.9 Ω IZ = 1mA, f = 120Hz, IAC = 0.1IZ, TA = 25°C 10
Reverse breakdown voltage VZ 2.5 V IZ = 100μA, TA = 25°C 10
Wideband noise eN 35 μVRMS IZ = 100μA, 10Hz ≤ f ≤ 10kHz, TA = 25°C 10
Long-term stability of reverse breakdown voltage 120 ppm t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA 10
Thermal hysteresis VHYST 0.08 % ΔTA = -40°C to 125°C 10
Continuous cathode current IZ -10 25 mA natural ventilation 5
Operating junction temperature TJ 150 °C 5
Storage temperature range Tstg -65 150 °C 5
Cathode current IZ 15 mA 5
Ambient temperature, natural ventilation (LM4040xxxI) TA -40 85 °C LM4040xxxI 5
Junction-to-ambient thermal resistance (DCK, 5-pin) RθJA 252 °C/W DCK (SC70, 5-pin) package 5

CAD (KiCad official)

  • Symbol: LM4040C25IDCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: lm4040c25idckr-etched.step / lm4040c25idckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040c25idckr.step / lm4040c25idckr.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 2026-09-24, 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