DESCRIPTION
The MP1488 is a step-up converter designed for
driving up to 27 WLEDs (9 strings of 3 WLEDs
each) from a 5V system rail. The MP1488 uses a
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.
The MP1488 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload.
The MP1488 is available in a small 6-pin TSOT23
package.

FEATURES
 2.5V to 6V Input Voltage Range
 On Board Power MOSFET
 Drives up to 27 White LEDs at 5V Input
 Up to 92% Efficiency
 Over 1MHz Fixed Switching Frequency
 Open Load Shutdown
 Low 104mV Feedback Voltage
 Soft-Start/PWM Dimming
 UVLO, Thermal Shutdown
 Internal 800mA Current Limit
 Available in a TSOT23-6 Package
APPLICATIONS
 Cell Phones
 Handheld Computers and PDAs
 Digital Still Cameras
 Small LCD Displays