# DIO8242HST3

**DIOO** · LED Drivers · SOT-23-3

DIO8242HST3 from DIOO, 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 | LED current ripple programming pin; the integrating capacitor CC between VC and GND sets the ripple-removal amplitude, and the absolute maximum rating is -0.3 to 6 V. |
| 2 | GND | power_in | Power ground reference for the device, with the NMOSFET source sense resistor Rcs connected between the source and GND. |
| 3 | LEDN | passive | Connects to the cathode of the LED string (drain of the internal NMOSFET), with an absolute maximum rating of 100 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DIOO |
| 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 |
|---|---|---|---|---|---|---|---|
| Start-up Current | IST |  | 1 |  | uA |  | 4 |
| LEDN Compare Voltage | VREF |  | 24 |  | V |  | 4 |
| LED Current Limit | ICLMT |  | 60 |  | mA |  | 4 |
| MOS Rdson | RDSON |  | 16 |  | Ω |  | 4 |
| Breakdown Voltage | BV |  | 100 |  | V |  | 4 |
| LEDN voltage (absolute max rating) |  |  |  | 100 | V |  | 3 |
| VC voltage (absolute max rating) |  | -0.3 |  | 6 | V |  | 3 |
| Junction Temperature (absolute max) |  |  |  | 150 | °C |  | 3 |
| Lead Temperature (absolute max) |  |  |  | 260 | °C |  | 3 |
| Storage Temperature |  | -65 |  | 150 | °C |  | 3 |
| Thermal Resistance junction-to-ambient, SOT23-3 | θJA |  | 220 |  | °C/W |  | 3 |
| Thermal Resistance junction-to-case, SOT23-3 | θJC |  | 130 |  | °C/W |  | 3 |
| LEDN (recommended operating) |  |  |  | 100 | V |  | 3 |
| Junction Temperature (TJ, recommended) | TJ |  |  | 125 | °C |  | 3 |
| Under point voltage | VLEDN | 0.8 |  | 1.2 | V |  | 3 |
| Power consumption, SOT23-3 |  |  |  | 250 | mW |  | 3 |
| Operating ambient temperature (ordering info, TA) | TA | -40 |  | 125 | °C | Ordering Information, TA column | 1 |

## CAD (KiCad official)

- Symbol: `DIO8242HST3`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `dio8242hst3-etched.step` / `dio8242hst3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dio8242hst3.step` / `dio8242hst3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIOO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602989718615441408) (9 pp, sha256 `9367aa015c8f0ff9`, retrieved 2026-10-18, tier: lcsc)
- **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/dio8242hst3-datasheet.pdf)