GENERAL DESCRIPTION

The EV0062 is an evaluation board designed to drive up to four (4) white LEDs in series. The board is based on MPS’ MP1541 SOT23 current mode step up converter. The MP1541 is intended for small, low power applications. The MP1541 switches at 1.3MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft start results in small inrush current and extends the battery life. The MP1541 operates from an input voltage as low as 2.5V and can generate 12V at up to 200mA from a 5V supply.

FEATURES

• On Board Power MOSFET

• Uses Tiny Capacitors and Inductors

• 1.3MHz Fixed Switching Frequency

• Internally Compensated

• Internal Soft Start

• Operates with Input Voltage as Low as 2.5V and Output Voltage as High as 22V

• 12V at 200mA from 5V Input

• UVLO, Thermal Shutdown

• Internal Current Limit

• Available in a TSOT23-5 Package

APPLICATIONS

• Camera Phone Flash

• Handheld Computers and PDAs

• Digital Still and Video Cameras

• External Modems

• Small LCD Displays

• White LED Driver