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LP2951ACDR2G

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by Ray

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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LP2951ACDR2G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

LP2951ACDR2G from onsemi, 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 power_out Regulated voltage output, up to 100 mA. Requires a minimum 1.0 µF output capacitor for stability.
2 Sense input Kelvin sense connection to the top of the internal 182 kΩ feedback divider. Tie to Output (pin 1) at the load for preset-voltage operation.
3 Shutdown input Logic-level shutdown input. Logic '0' (0 to 0.7 V) enables the regulator; logic '1' (2.0 to 30 V) disables it. Draws ~35 µA at 2.4 V.
4 GND power_in Device ground reference.
5 Error_Output output Active-low, open-collector out-of-regulation flag. Pulls low (VOL ≤ 250 mV at 400 µA) when the output falls ~5% below nominal. Can drive a µP power-on-reset. Requires external pull-up; 30 V max.
6 VO_Tap output Tap point of the internal 182 kΩ / 60 kΩ divider producing the 1.235 V reference node when tied to Feedback (pin 7). Connect pin 6 to pin 7 for preset output; leave open and use an external divider for adjustable operation.
7 Feedback input Error amplifier inverting input, referenced to the internal 1.235 V bandgap. Feedback pin bias current ~15 nA (40 nA max). Programs output from 1.25 V to 29 V via external divider, or tie to pin 6 for preset Output.
8 Input power_in Unregulated supply input, 2 V to 30 V (32 V peak transient <300 ms). Powers the pass transistor and internal circuitry.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LP2951ACDR2GD
  • LP2951ACDR2G
  • LP2951ACDR2GDM
  • LP2951ACDR2GACDM
  • LP2951ACDR2GN
  • LP2951ACDR2GACN
  • LP2951ACDR2GZ
  • LP2951ACDR2GACZ
  • LP2951ACDR2GDT

CAD (KiCad official)

  • Symbol: LP2951ACDR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lp2951acdr2g.step 122 KB You want the bare part, or you mark your own boards.
lp2951acdr2g-etched.step 2.4 MB You want the part with LP2951ACDR2G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 592 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (25 pp, sha256 866e459f55a12386, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF