# GR6405SNS08ARDQ

**GR** · LED Drivers · SOP-8

GR6405SNS08ARDQ 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 | GND | power_in | Power negative (ground) pin for the GR6405S, per the pin function table. |
| 2 | FB2 | passive | Channel 2 current-setting pin; the external R3 resistor sets the LED2- constant current, with 1 Ω (1%) giving 280-340 mA, 1.5 Ω (1%) giving 200-240 mA and 3 Ω (1%) giving 108-132 mA at VCC = 5 V. |
| 3 | FB1 | passive | Channel 1 current-setting pin; the external R4 resistor sets the LED1- constant current, with the same resistor-to-current values as channel 2 at VCC = 5 V. |
| 4 | LED1- | output | Channel 1 LED negative terminal, which is the constant-current sink; the programmable range is 10 mA to 350 mA. |
| 5 | LED2- | output | Channel 2 LED negative terminal, which is the constant-current sink; the programmable range is 10 mA to 350 mA. |
| 6 | EN1 | input | Channel 1 enable input, active high; at VCC = 5 V it needs VIH of at least 1.5 V and VIL of at most 0.5 V. |
| 7 | EN2 | input | Channel 2 enable input, active high; at VCC = 5 V it needs VIH of at least 1.5 V and VIL of at most 0.5 V. |
| 8 | VCC | power_in | Positive supply pin; the supply voltage must be within 4.5 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GR |
| Package | SOP-8 |
| Category | LED Drivers |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 4.5 |  | 5.5 | V |  | 2 |
| EN input low voltage | VIL |  |  | 0.5 | V | VCC = 5 V | 2 |
| EN input high voltage | VIH | 1.5 |  |  | V | VCC = 5 V | 2 |
| EN high input current | IIH | 10 |  | 20 | μA | VCC = 5 V, EN= 5 V | 2 |
| EN low input current | IIL |  |  | 1 | μA | VCC = 5 V, EN= 0 V | 2 |
| LED output current | IOUT | 10 |  | 350 | MA | VCC = 5 V | 2 |
| LED output current accuracy |  | -10 |  | 10 | % |  | 1 |

## CAD (KiCad official)

- Symbol: `GR6405SNS08ARDQ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `gr6405sns08ardq-etched.step` / `gr6405sns08ardq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gr6405sns08ardq.step` / `gr6405sns08ardq.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/8603388399298625536) (4 pp, sha256 `1efa29a64c656b27`, retrieved 2026-10-18, 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-haiku-5-5` (text), consensus `claude-sonnet-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/gr6405sns08ardq-datasheet.pdf)