component
LM4040D41IDCKR
Public Unreviewedby Ray
Texas Instruments Voltage Reference, SC-70-5. Datasheet-verified pinout, 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
markdownLM4040D41IDCKR
Texas Instruments · Voltage Reference · SC-70-5
LM4040D41IDCKR from Texas Instruments, in a SC-70-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ANODE | power_in | Anode terminal - the common/ground return of the shunt reference. Reference voltage V_KA (4.096V nominal) develops between CATHODE and ANODE; ANODE typically ties to the circuit ground. |
| 2 | NC/GUARD | passive | Special pin marked '*' in the pinout diagram. Must be left floating or tied to ANODE. TI recommends connecting to ANODE in applications with high EMI (e.g. near transformers) or significant high-frequency switching noise. |
| 3 | CATHODE | power_in | Cathode terminal - the shunt current/voltage input. Bias current (typ. 45µA to 15mA) flows into CATHODE through an external series resistor from the supply; V_KA regulates to 4.096V nominal across CATHODE-ANODE. |
| 4 | NC | unconnected | No internal connection. Leave floating or tie to any convenient net (no electrical function). |
| 5 | NC | unconnected | No internal connection. Leave floating or tie to any convenient net (no electrical function). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
LM4040D41IDCKRLM4040D41IDCKTLM4040D41IDCKRIDBZRLM4040D41IDCKRIDBZTLM4040D41IDCKRILPLM4040D41IDCKRILPRLM4040D41IDCKRILPM
CAD (KiCad official)
- Symbol:
LM4040D41IDCKR - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SC-70-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
d96b09a62847ccea, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).