# GR3115

**GR** · Gate Drivers · SOP-8

GR3115 from GR, in a SOP-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 | VCC | power_in | Low-side supply voltage; recommended 10 to 20 V, absolute maximum -0.3 to 25 V, with UVLO protection. |
| 2 | HIN | input | High-side logic input, in phase with HO, 3.3V/5V compatible, -0.3 to VCC+0.3 V. |
| 3 | LIN | input | Low-side logic input (active low, inverted relative to LO), 3.3V/5V compatible, -0.3 to VCC+0.3 V. |
| 4 | GND | power_in | Ground. |
| 5 | LO | output | Low-side gate drive output, 0 to VCC recommended, absolute maximum -0.3 to VCC+0.3 V. |
| 6 | VS | power_in | High-side floating supply return (floating ground), recommended -5 to 180 V, absolute maximum VB-25 to VB+0.3 V. |
| 7 | HO | output | High-side gate drive output, VS to VB recommended, absolute maximum VS-0.3 to VB+0.3 V. |
| 8 | VB | power_in | High-side floating absolute supply voltage, recommended VS+10 to VS+20 V, absolute maximum -0.3 to 205 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GR |
| Package | SOP-8 |
| Category | Motor Driver ICs |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `GR3115`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `gr3115-etched.step` / `gr3115-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gr3115.step` / `gr3115.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908513323868160) (6 pp, sha256 `eba43304e172cb25`, retrieved 2026-10-09, 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 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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).

[Datasheet PDF](docs/gr3115-datasheet.pdf)