component
DIO8280AXS8
Public Made by Adomby adom
DIOO LED Drivers, SOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownDIO8280AXS8
DIOO · LED Drivers · SOP-8-EP
DIO8280AXS8 from DIOO, in a SOP-8-EP. 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 | SENN | input | Negative current sense pin; the current sense limit across SEN-SENN is 200mV typical and the pin is rated -0.3 to 90V. |
| 2 | EN | input | Enable and PWM dimming input pin, with turn-on threshold 1.28V, turn-off threshold 0.56V, and rated -0.3 to 90V. |
| 3 | CF | input | Connect a capacitor to ground to filter AC ripple on the reference voltage, or apply 0~1.2V directly for linear dimming. |
| 4 | GND | power_in | Ground pin. |
| 5 | LX | passive | Power MOSFET drain pin connected to the inductor node, rated -0.3 to 90V. |
| 6 | LX | passive | Power MOSFET drain pin connected to the inductor node, rated -0.3 to 90V. |
| 7 | VIN | power_in | Input supply pin, 16 to 85V recommended, to be decoupled to GND with a ceramic capacitor. |
| 8 | SEN | input | Positive current sense pin, rated -0.3 to 90V; PWM is disabled if VSEN-VSENN is 0.3V or more. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DIOO |
| Package | SOP-8-EP |
| Category | Nixie Tube Driver/LED Driver |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 16 | 85 | V | VIN = 24V, VOUT = 12V, IOUT = 100mA, TA = 25°C | 4 | |
| Shutdown Current | IDN | 10 | μA | EN=0 | 4 | ||
| Current Sense Limit | VSEN-SENN | 196 | 200 | 204 | mV | 4 | |
| Power MOSFET ON Resistance | RDSON | 200 | mΩ | 4 | |||
| Power MOSFET Current Limit | ILIMIT | 2.8 | A | 4 | |||
| Switching Frequency | FSW | 400 | kHz | 4 | |||
| EN turn-on Threshold | VENH | 1.28 | V | 4 | |||
| EN turn-off Threshold | VENL | 0.56 | V | 4 | |||
| VIN turn-on threshold | VIN,ON | 7.4 | V | 4 | |||
| VIN turn-off threshold | VVIN,OFF | 6.8 | V | 4 | |||
| Analog dimming range on CF | VCF | 120 | mV | ILED=10% | 4 | ||
| Analog dimming range on CF | VCF | 1.2 | V | ILED=100% | 4 | ||
| Thermal Shutdown Temperature | TSD | 150 | °C | 4 | |||
| Thermal Hysteresis | Hyst | 30 | °C | 4 | |||
| Abs max LX, VIN, EN, SEN, SENN | -0.3 | 90 | V | 3 | |||
| Abs max all other pins | -0.3 | 5.5 | V | 3 | |||
| Power Dissipation | PD | 3.3 | W | TA=25°C | 3 | ||
| Junction Temperature Range (abs max) | -40 | 150 | °C | 3 | |||
| Lead Temperature | 260 | °C | 3 | ||||
| Storage Temperature Range | -65 | 150 | °C | 3 | |||
| Recommended VIN, LX, EN, SEN, SENN | 16 | 85 | V | 3 | |||
| Recommended all other pins | 0 | 5 | V | 3 | |||
| Recommended Junction Temperature Range | -40 | 125 | °C | 3 | |||
| Thermal Resistance Junction-to-Ambient | ΘJA | 30 | °C/W | 3 | |||
| Thermal Resistance Junction-to-Case | ΘJC | 10 | °C/W | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | problems, we should place the following components close to the IC: CVIN, L, COUT, CF and RCS. 1) It is desirable to maximize the PCB copper area connecting to GND pin to achieve the best thermal and | 7 |
CAD (KiCad official)
- Symbol:
DIO8280AXS8 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
dio8280axs8-etched.step/dio8280axs8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dio8280axs8.step/dio8280axs8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DIOO datasheet (9 pp, sha256
d266813ec5191a25, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).