MP3310

50V, 1.3A, Step-up

White LED Driver

with True PWM Dimming

MP3310 Rev.1.0

www.MonolithicPower.com

1

7/5/2011

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© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3310 is a monolithic step-up converter

designed for driving arrays of WLEDs from a

wide input supply range. The MP3310 uses

current mode, fixed frequency architecture to

regulate the LED current to user programmed

value set by an external current setting resistor.

The switching frequency is also programmable

with an external resistor.

The MP3310 features true PWM dimming,

which allows the flexible control of the

backlighting luminance under wide range of the

ambient brightness.

The MP3310 is turned off if an over-voltage

condition is present due to an open circuit

condition. Use one external resistor voltage

divider to program OVP threshold. The MP3310

also includes under-voltage lockout, current

limiting

and

thermal

overload

protection

preventing damage in the event of an output

overload.

The MP3310 is available in small 10-pin QFN

3x3mm package.

FEATURES

• Internal 0.3Ω Power MOSFET

• Wide 4.5V to 25V Operating Input Range

• Drives up to 12 Series White LEDs

• Up to 93% Efficiency

• True PWM Dimming

• Adjustable Switching Frequency

• Adjustable Open Load Shutdown Voltage

• Internal 1.3A Current Limit

• UVLO, Thermal Shutdown

• Available in 3mm x 3mm QFN10 Package

APPLICATIONS

• LCD Panels

• Digital Picture Frames

• Handheld Computers and PDAs

• Digital Still Cameras

• Small LCD Displays

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“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

VIN vs. Efficiency

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