General Description

The MIC2297 is a 600KHz PWM boost-switching regulator that is optimized for driving 6-10 series white LEDs. With its internal 40V switch and a guaranteed switch current of 1.2A, the MIC2297 easily drives a string of 10 white LEDs in series at 20mA, ensuring a high level of brightness and eliminating several ballast resistors.

Features

• 2.5V to 10V input voltage range

• Output voltage up to 40V

• 1.2A switch current

• 600KHz PWM operation

• Trimmed 200mV feedback voltage

• Output over voltage protection (fixed or adjustable)

• PWM Brightness Control

• DAC Brightness Control

• <1 line regulation

• 1µA shutdown current

• Over temperature protection

• UVLO

• 10-pin 2.5mm x 2.5mm MLF® package

• –40°C to +125°C junction temperature range

Applications

• PDAs

• GPS systems

• Smart phones

• Mini PCs

• Digital cameras

• IP phones

• LED flashlights