component
LM4040C25IDCKR
Public Made by Adomby adom
Texas Instruments Voltage Reference, SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM4040C25IDCKR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4040c25idckr.step/lm4040c25idckr.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).