component
LP2951DR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Datasheet-verified pinout, 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
markdownLP2951DR
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8
LP2951DR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUTPUT | output | Regulated output voltage pin; capacitor required to GND for stability (minimum 1µF effective, nominal 2.2µF, maximum 100µF) with ESR range 0-2Ω for new chip. |
| 2 | SENSE | input | Senses output voltage; connect to OUTPUT for fixed output mode (with FEEDBACK tied to VTAP), leave floating for adjustable output. |
| 3 | SHUTDOWN | input | Active-high shutdown control input; disables regulator when voltage > 2V, enables when voltage < 0.7V. |
| 4 | GND | power_in | Ground reference. |
| 5 | ERROR | output | Active-low open-drain error output; asserts low when output voltage drops 6% (typical) below nominal value, with threshold 75-95 mV above VREF. |
| 6 | VTAP | input | Internal resistor divider tap; connect to FEEDBACK for fixed output mode, leave floating for adjustable output. |
| 7 | FEEDBACK | input | Output voltage feedback input; for fixed output connect to VTAP, for adjustable output connect to external resistor divider network (VREF 1.189-1.211V for new chip). |
| 8 | INPUT | power_in | Input supply voltage pin operating range 2-30V; 1µF or larger capacitor to GND recommended to reduce source impedance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LP2951DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lp2951dr-etched.step/lp2951dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp2951dr.step/lp2951dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
04f02333dfa5fad2, retrieved 2026-09-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).