DESCRIPTION

The MP1518 is a step-up converter designed for driving up to 6 series white LEDs from a single cell Lithium Ion battery. The MP1518 uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 104mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition.

FEATURES

• On Board Power MOSFET

• Drives up to 6 Series White LEDs

• Up to 87 Efficiency

• Over 1MHz Fixed Switching Frequency

• Open Load Shutdown

• Low 104mV Feedback Voltage

• Soft-Start/PWM Dimming

• UVLO, Thermal Shutdown

• Internal Current Limit

• Available in TSOT23-6 and QFN8 Packages

APPLICATIONS

• Cell Phones

• Handheld Computers and PDAs

• Digital Still Cameras

• Small LCD Displays