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LM4050QCEM3-4.1
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Texas Instruments Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM4050QCEM3-4.1
Texas Instruments · Voltage Reference · SOT-23
LM4050QCEM3-4.1 from Texas Instruments, in a SOT-23. 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 | Cathode | bidirectional | Carries the shunt current and input voltage; the cathode must receive at least the 52 µA typical minimum cathode current for the 4.1 V option and stay below the 15 mA maximum operating current, with 20 mA maximum reverse current as the absolute limit. |
| 2 | Anode | output | General-purpose pin that is normally connected to ground, serving as the reference terminal for the shunt regulator. |
| 3 | NC | unconnected | No internal connection; it must be left floating or connected to pin 2, and TI recommends connecting it to the anode in applications with high EMI or significant high-frequency switching noise. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM4050QCEM3-4.1 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lm4050qcem3-4-1-etched.step/lm4050qcem3-4-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4050qcem3-4-1.step/lm4050qcem3-4-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (47 pp, sha256
02a99aa1f022863b, retrieved 2026-10-11, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).
# LM4050QCEM3-4.1
**Texas Instruments** · Voltage Reference · SOT-23
LM4050QCEM3-4.1 from Texas Instruments, in a SOT-23. 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 | Cathode | bidirectional | Carries the shunt current and input voltage; the cathode must receive at least the 52 µA typical minimum cathode current for the 4.1 V option and stay below the 15 mA maximum operating current, with 20 mA maximum reverse current as the absolute limit. |
| 2 | Anode | output | General-purpose pin that is normally connected to ground, serving as the reference terminal for the shunt regulator. |
| 3 | NC | unconnected | No internal connection; it must be left floating or connected to pin 2, and TI recommends connecting it to the anode in applications with high EMI or significant high-frequency switching noise. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `LM4050QCEM3-4.1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `lm4050qcem3-4-1-etched.step` / `lm4050qcem3-4-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4050qcem3-4-1.step` / `lm4050qcem3-4-1.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4050-n-q1) (47 pp, sha256 `02a99aa1f022863b`, retrieved 2026-10-11, 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](docs/lm4050qcem3-4-1-datasheet.pdf)