# DX27641

**Dersem** · LED Drivers · SOT-23-3

DX27641 from Dersem, in a SOT-23-3. 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 | VC | input | VC is the control port of the ripple-filter circuit, with an absolute voltage limit of -0.3 V to 7 V. |
| 2 | GND | power_in | GND is the chip ground pin; the datasheet gives no separate electrical limit for it. |
| 3 | OUT | output | OUT is the output port of the ripple-filter circuit, with an absolute voltage limit of -0.3 V to 60 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Dersem |
| Package | SOT-23-3 |
| Category | LED Drivers |
| Pins | 3 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VOUT OUT pin voltage | VOUT | -0.3 |  | 60 | V |  | 3 |
| VC pin voltage | VVC | -0.3 |  | 7 | V |  | 3 |
| Power dissipation (note 3) | PD |  |  | 0.4 | W |  | 3 |
| Operating junction temperature range | TJ |  |  | 150 | °C |  | 3 |
| Storage temperature range | TSTG | -55 |  | 150 | °C |  | 3 |
| ESD HBM | VESD |  |  | 2 | KV | HBM 人体放电模式 | 3 |
| Operating temperature (ambient) |  | -40 |  | 125 | °C |  | 3 |
| Operating current |  |  |  | 60 | mA | SOT23-3 | 3 |
| LED maximum current | IMAX |  |  | 60 | mA |  | 3 |
| Built-in MOS breakdown voltage | BVDS | 60 |  |  | V |  | 3 |
| Built-in MOS on-resistance | RDSON |  | 12 |  | Ω |  | 3 |
| DRN pin start-up voltage (as printed, unit uA) | VST |  | 5 |  | uA | TA=25°C | 3 |

## CAD (KiCad official)

- Symbol: `DX27641`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `dx27641-etched.step` / `dx27641-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dx27641.step` / `dx27641.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Dersem datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603378648263110656) (7 pp, sha256 `4080d36f94058f39`, retrieved 2026-10-17, 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/dx27641-datasheet.pdf)