component
LM4040BIM3-4.1
Public Unreviewedby Ray
HGSEMI Voltage Reference, SOT-23. 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
markdownLM4040BIM3-4.1
HGSEMI · Voltage Reference · SOT-23
LM4040BIM3-4.1 from HGSEMI, in a SOT-23. 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 | V+ | passive | Cathode of the shunt reference (positive terminal, marked '+'). Ties through a series resistor Rs to the supply Vs; the pin regulates to +4.096 V above the '-' pin. |
| 2 | V- | passive | Anode of the shunt reference (negative terminal, marked '-'). Normally tied to circuit ground; return path for the shunt bias current (60 µA to 15 mA). |
| 3 | NC | unconnected | No internal connection on the fixed-voltage version. Datasheet note: 'Pin 3 must float or be connected to pin 2.' Do not connect to any other node. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
LM4040BIM3-4.1/TR
CAD (KiCad official)
- Symbol:
LM4040BIM3-4.1 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (26 pp, sha256
769266b4b58a05fd, retrieved 2026-08-17, tier: lcsc) - 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).