LM2931AD-5.0R2G
Public Made by Adomby adom
onsemi LM2931AD 5 0R2G 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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README
markdownLM2931AD-5.0R2G
onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8
LM2931AD-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 | Output | power_out | Regulated 5.0 V output. Delivers up to 100 mA with a dropout of ~0.16 V at 100 mA (0.015 V at 10 mA). Requires an external output capacitor for stability; recommended value 22 uF or greater with ESR in the stable region (see Figure 23). |
| 2 | GND | power_in | Device ground / return. Pins 2, 3, 6 and 7 are internally connected to the die-attach paddle and are shown bracketed together on the SOIC-8 fixed pinout; tie all four to the ground plane to help remove heat. |
| 3 | GND | power_in | Device ground / return. Bracketed with pins 2, 6 and 7 on the SOIC-8 fixed pinout - tie all together to the ground plane for heat spreading. |
| 4 | NC | unconnected | No connection on the fixed-output SOIC-8 variant. Leave floating or tie to ground; do not use as a signal node. |
| 5 | NC | unconnected | No connection on the fixed-output SOIC-8 variant. Leave floating or tie to ground; do not use as a signal node. |
| 6 | GND | power_in | Device ground / return. Bracketed with pins 2, 3 and 7 on the SOIC-8 fixed pinout - tie all together to the ground plane for heat spreading. |
| 7 | GND | power_in | Device ground / return. Bracketed with pins 2, 3 and 6 on the SOIC-8 fixed pinout - tie all together to the ground plane for heat spreading. |
| 8 | Input | power_in | Unregulated supply input. Continuous operating range 6.0-26 V, absolute max 40 Vdc continuous, 60 Vpk transient (load dump), and survives -50 Vpk reverse polarity. An input bypass capacitor (0.1 uF typ) is recommended if the regulator is >=4 inches from the supply. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM2931AD-5.0R2GDLM2931AD-5.0R2GLM2931AD-5.0R2GDR2GLM2931AD-5.0R2GZLM2931AD-5.0R2GTLM2931AD-5.0R2GDTLM2931AD-5.0R2GD2TLM2931AD-5.0R2GSTLM2931AD-5.0R2GTHLM2931AD-5.0R2GTVLM2931AD-5.0R2GT (5-lead)LM2931AD-5.0R2GD2T (5-lead)
CAD (KiCad official)
- Symbol:
LM2931AD-5.0R2G - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2931ad-5-0r2g-etched.step/lm2931ad-5-0r2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2931ad-5-0r2g.step/lm2931ad-5-0r2g.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm2931ad-5-0r2g.step |
122 KB | You want the bare part, or you mark your own boards. |
lm2931ad-5-0r2g-etched.step |
2.8 MB | You want the part with LM2931AD-5.0R2G already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 684 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 (27 pp, sha256
b141936e66454b38, 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).