component
LP2951-50QDRQ1
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. 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
markdownLP2951-50QDRQ1
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8
LP2951-50QDRQ1 from Texas Instruments, in a SOIC-8. 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 | OUTPUT | output | Regulated output voltage; requires 1µF to 100µF capacitor (ESR 0Ω-2Ω) to GND for stability. |
| 2 | SENSE | input | Output voltage sense input; connect to OUTPUT for fixed-output configuration or leave floating for adjustable operation. |
| 3 | SHUTDOWN | input | Active-high shutdown input with logic threshold 0.7V (on) to 2V (off); low enables regulator, high disables output. |
| 4 | GND | power_in | Ground reference and return path. |
| 5 | ERROR | tri_state | Open-drain fault output that pulls low when VOUT drops 6% below nominal value, indicating undervoltage condition. |
| 6 | VTAP | output | Internal voltage divider tap; connect to FEEDBACK for fixed-output configuration or leave floating for adjustable operation. |
| 7 | FEEDBACK | input | Feedback input determining output voltage; connect to VTAP (with OUTPUT to SENSE) for fixed output, or to resistor divider for programmable output (VREF to 29V). |
| 8 | INPUT | power_in | Input power supply (VIN 2V-30V); requires minimum 1µF ceramic or tantalum capacitor to GND for decoupling. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LP2951-50QDRQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lp2951-50qdrq1-etched.step/lp2951-50qdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp2951-50qdrq1.step/lp2951-50qdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (45 pp, sha256
62996f437fc72636, retrieved 2026-09-27, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).