General Description

The EV0059 evaluation board is designed to drive Lumileds White LEDs using MPS’ MP1567 step down converter. The EV0059 circuit is a positive to negative voltage converter with a positive input voltage range of 2.6V to 6V. The generated output voltage can be as low as -18V with respect to ground.

Lumileds Emitter Features

■ Highest Flux per LED in the world o Up to 120 lumens

■ Very long operating life (up to100k hours)

■ Superior ESD protection

■ More Energy Efficient than Incandescent and most Halogen lamps

■ Available in White, Green, Blue, Royal Blue, Cyan, Red, Red-Orange, and Amber

MP1567 Features

■ 2A Peak Current Limit

■ Internal 180mΩ and 220mΩ Power Switches

■ > 90 efficiency

■ Zero Current Shutdown Mode

■ Under Voltage Lockout Protection

■ Soft Start Operation

■ Thermal Shutdown

■ Internal Current Limit (Source & Sink)

Applications

■ Handheld Computers, PDAs

■ Cell phones, Digital and Video Cameras

■ Small LCD Display