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LM2931D-5.0R2G

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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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LM2931D-5.0R2G

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

LM2931D-5.0R2G 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 Input power_in Unregulated input supply. Continuous 40 V max, 60 V transient (<=100 ms), survives -50 V reverse transients. Operates down to ~0.6 V above VOUT at 100 mA (low dropout).
2 GND power_in Device ground. SOIC-8 fixed version ties pins 2, 3, 6, 7 together as GND; also used as a thermal path to the PCB copper plane.
3 GND power_in Device ground (tied internally to pins 2, 6, 7). Provides thermal dissipation to PCB.
4 NC unconnected No internal connection. Leave floating or tie to GND for PCB layout convenience.
5 NC unconnected No internal connection. Leave floating or tie to GND for PCB layout convenience.
6 GND power_in Device ground (tied internally to pins 2, 3, 7). Provides thermal dissipation to PCB.
7 GND power_in Device ground (tied internally to pins 2, 3, 6). Provides thermal dissipation to PCB.
8 Output power_out Regulated 5.0 V output, capable of >=100 mA. Requires a >=100 uF output capacitor with ESR ~0.3 ohm for stability (see datasheet). Typical dropout is 0.16 V at 100 mA.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LM2931D-5.0R2G
  • LM2931D-5.0G
  • LM2931D-5.0R2GZ
  • LM2931D-5.0R2GT
  • LM2931D-5.0R2GDT
  • LM2931D-5.0R2GD2T
  • LM2931D-5.0R2GST
  • LM2931D-5.0R2GTH
  • LM2931D-5.0R2GTV

The extractor listed these alongside LM2931D-5.0R2G, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2931D-5.0R2GT (adj)
  • LM2931D-5.0R2GD2T (adj)
  • LM2931D-5.0R2GD (adj / LM2931C)

CAD (KiCad official)

  • Symbol: LM2931D-5.0R2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: onsemi datasheet (23 pp, sha256 df9ec9ec42038b2b, 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