4-Channel RGB/White LED Driver with I2C Control
Description
The KTD2026/7 are fully programmable, constant current RGB or RGBW LED drivers with a flexible control interface. The devices are ideally powered from one-cell lithium-ion/polymer, 3-cell NiCd/NiMH/Alkaline batteries, or systems with 3.3V or 5V supplies. The independent programmable constant current sinks operate without external components.
With an on-chip timing control unit, LED blink rate, fade-in and fade-out are user-adjustable resulting in unique color lighting patterns.
Ten internal registers are programmed via the I2C interface with a built-in decoder allowing individual control of the three/four LED channels’ On/Off state and current level. A total of 192 current levels are available for each channel from 0.125mA to 24mA with a 0.125mA step.
In shutdown mode, the quiescent current is reduced to less than 1μA.
The driver is available in a low profile 8-pin 1.5mm x 1.5mm x 0.5mm Ultra-Thin DFN package. The packages are Pbfree, RoHS and Green compliant.
Features
- Ultra low dropout regulated current sinks
- 3-Channels: KTD2026
- 4-Channels: KTD2027
- 40mV typical at 10mA per channel
- Programmable LED setting using I2C control
- Individual channel control
- On/Off Interval Time Control
- Dimming Up/Down Time
- Current Level Setting
- RGB or RGBW LED Color Control
- 192 current levels: 24mA max, 0.125mA step
- ±5% current matching for max current
- Low supply current of 200μA typ.
- No noise, non-pulsating LED current
- Fast, smooth start-up
- VIN Range: 2.7V to 5.5V
- 0.1μA Shutdown Current
- Pb-free Package: UTDFN-8 1.5×1.5mm
- -40°C to +85°C Temperature Range
Applications
- RGB indicator LEDs
- Flashing LEDs
- Mobile Phones
- Handheld Devices
- Digital Cameras
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| UDFN-8 | 1.5mm x 1.5mm x 0.5mm | 8 | WE |
Parameters
| Vin (min) | Vin (max) | LED Channels | Max Current (A) |
| 2.7V | 5.5V | 4 | 24mA |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTD2026-7-04h | |
| Package Outline Drawing | UDFN-8 WE POD |
Evaluation Tools
| Documents | Type |
|
|---|---|---|
| User Manual | ||
| Quick Start Guide | ||
| Bill of Materials | XLSX | |
| Schematic | ||
| 3D Board |
Purchase
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |