component
LM4120IM5-3.3
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM4120IM5-3.3
Texas Instruments · Voltage Reference · SOT-23-5
LM4120IM5-3.3 from Texas Instruments, in a SOT-23-5. 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 | REF | unconnected | The REF pin must remain unconnected in all cases, and it is sensitive to noise and capacitive loading, so it should be isolated on the PCB as much as possible. |
| 2 | GND | power_in | Negative supply or ground connection. |
| 3 | Enable | input | Pull to VIN for normal operation; forcing this pin to ground turns off the output, and floating it is not recommended. |
| 4 | VIN | power_in | Positive supply; the device operates with input voltages from 2 V to 12 V. |
| 5 | VOUT | output | Reference output, sourcing or sinking up to ±5 mA of load current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LM4120IM5-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lm4120im5-3-3-etched.step/lm4120im5-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4120im5-3-3.step/lm4120im5-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (23 pp, sha256
52a620e678f029f5, retrieved 2026-10-07, tier: lcsc) - 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).
# LM4120IM5-3.3
**Texas Instruments** · Voltage Reference · SOT-23-5
LM4120IM5-3.3 from Texas Instruments, in a SOT-23-5. 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 | REF | unconnected | The REF pin must remain unconnected in all cases, and it is sensitive to noise and capacitive loading, so it should be isolated on the PCB as much as possible. |
| 2 | GND | power_in | Negative supply or ground connection. |
| 3 | Enable | input | Pull to VIN for normal operation; forcing this pin to ground turns off the output, and floating it is not recommended. |
| 4 | VIN | power_in | Positive supply; the device operates with input voltages from 2 V to 12 V. |
| 5 | VOUT | output | Reference output, sourcing or sinking up to ±5 mA of load current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## CAD (KiCad official)
- Symbol: `LM4120IM5-3.3`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lm4120im5-3-3-etched.step` / `lm4120im5-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4120im5-3-3.step` / `lm4120im5-3-3.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/lm4120) (23 pp, sha256 `52a620e678f029f5`, retrieved 2026-10-07, tier: lcsc)
- **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/lm4120im5-3-3-datasheet.pdf)