Brief Description
The KTD2801/A/B is a versatile constant current LED driver with a high efficiency DC-DC step up “boost” converter architecture. The low-side power MOSFET and high-side diode are integrated in the device, minimizing the total number of external components. Unique technology and high 0.52A current limit allow KTD2801 to drive up to 36V output (10 LEDs in series), or KTD2801A 30V output (8 LEDs in series) or KTD2801B 24V output (6 LEDs).

FEATUREs
• Wide VIN input range: 2.7V to 5.5V
• Wide output range: up to 10 series LEDs
• Integrated 40V high current switch (0.52A limit)
• High efficiency boost converter (up to 85%)
• Highly integrated solution
   ► Integrated diode
   ► Internal compensation and soft start
• ExpressWireTM interface dual method dimming
   with single pin (CTRL)
   ► 256-step Serial dimming control
   ► High resolution PWM dimming
• High accuracy across full load range
• LED open-circuit (OVP) protection
   ► KTD2801 : 36V
   ► KTD2801A : 30V
   ► KTD2801B : 24V
• Low 200mV feedback voltage
• 1MHz High switching frequency
• Simple, small solution size
• < 1 µA shutdown current
• Small TDFN22-6 and Thin SOT23 package
• RoHS and Green compliant
• -40°C to +85°C Temperature Range

APPLICATIONs
• LED backlighting
• Mobile Phones, Handheld Devices
• Digital Photo Frames, Automotive Navigation