Brief Description
The KTD2037/2037B is a fully programmable, constant current RGB LED driver with a flexible control interface. The device is ideally powered from one-cell lithiumion/polymer, 3-cell NiCd/NiMH/Alkaline batteries, or systems with 3.3V or 5V supplies. It provides three independent programmable constant current sinks without requiring any external components.

FEATUREs
• Ultra low dropout regulated 3-channel current
   sinks
   ► 40mV typ. at 10mA per channel
• Programmable LED setting by I2C compatible
   interface
• Individual channel control
   ► On/Off Interval Time Control
   ► Dimming Up/Down Time
   ► RGB LED Color Control
• 191 current level setting
   ► 24mA max, 0.125mA step
   ► ±5% current matching at max current
• AutoBlinQ LED1 (D1 pin) mode
   ► Blinking period: 2s
   ► Current setting: 8mA
• 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 1.5x1.5mm
• -40°C to +85°C Temperature Range

APPLICATIONs
• RGB indicator LEDs
• Mobile Phones and Handheld Devices
• Digital Cameras