component
LP2981IM5X-3.3
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LP2981IM5X-3.3
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
LP2981IM5X-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 | IN | power_in | Input supply pin; use a capacitor with a value of 1µF or larger from this pin to ground. |
| 2 | GND | power_in | Common ground and device substrate. |
| 3 | ON/OFF | input | Enable pin for the LDO; driving high enables the device and driving low disables it, with thresholds listed in Electrical Characteristics table. |
| 4 | NC | unconnected | Do not connect; reserved for post-packaging test and calibration; must be left floating and not connected to any potential or ground. |
| 5 | OUT | power_out | Output of the regulator; use a capacitor with a value of 2.2µF or larger from this pin to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LP2981IM5X-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lp2981im5x-3-3-etched.step/lp2981im5x-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp2981im5x-3-3.step/lp2981im5x-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (43 pp, sha256
4edc0bbf3eaa25d3, retrieved 2026-10-07, 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-4-5-20251001(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).
# LP2981IM5X-3.3
**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
LP2981IM5X-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 | IN | power_in | Input supply pin; use a capacitor with a value of 1µF or larger from this pin to ground. |
| 2 | GND | power_in | Common ground and device substrate. |
| 3 | ON/OFF | input | Enable pin for the LDO; driving high enables the device and driving low disables it, with thresholds listed in Electrical Characteristics table. |
| 4 | NC | unconnected | Do not connect; reserved for post-packaging test and calibration; must be left floating and not connected to any potential or ground. |
| 5 | OUT | power_out | Output of the regulator; use a capacitor with a value of 2.2µF or larger from this pin to ground. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## CAD (KiCad official)
- Symbol: `LP2981IM5X-3.3`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lp2981im5x-3-3-etched.step` / `lp2981im5x-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp2981im5x-3-3.step` / `lp2981im5x-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/lp2981-n) (43 pp, sha256 `4edc0bbf3eaa25d3`, retrieved 2026-10-07, 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-4-5-20251001` (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/lp2981im5x-3-3-datasheet.pdf)