component
LP3961EMPX-1.8
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-5. Pinout cross-checked by two models against the datasheet, 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
markdownLP3961EMPX-1.8
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-5
LP3961EMPX-1.8 from Texas Instruments, in a SOT-223-5. 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 | SD | input | Shutdown input with an operating range of −0.3 V to VIN + 0.3 V, and the datasheet requires it to be pulled high through a 10-kΩ pullup resistor. |
| 2 | IN | power_in | Input supply pin for the regulator, specified for 2.5 V to 7 V operation (survival −0.3 V to 7.5 V), with the minimum operating input equal to VOUT(NOM) + VDROPOUT or 2.5 V, whichever is greater. |
| 3 | OUT | power_out | Regulated output voltage pin, rated for a maximum DC operating current of 0.8 A, short-circuit protected, with survival voltage −0.3 V to 7.5 V. |
| 4 | ERROR | output | ERROR flag output that goes low when the output voltage drops 10% below nominal, with a maximum voltage of VIN + 0.3 V, and it must be pulled high through a 10-kΩ resistor or connected to ground if unused. |
| 5 | GND | power_in | Ground pin for the regulator. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LP3961EMPX-1.8 - Footprint:
Package_TO_SOT_SMD:SOT-223-5 - 3D model: SOT-223-5, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm nominal SOT height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
lp3961empx-1-8-etched.step/lp3961empx-1-8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp3961empx-1-8.step/lp3961empx-1-8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
84dbca76243c9a35, retrieved 2026-10-08, 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).