MP3310 Datasheet, PDF (1/10 Pages) Monolithic Power Systems – 50V, 1.3A, Step-up White LED Driver with True PWM Dimming

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.
TYPICAL APPLICATION
MP3310
50V, 1.3A, Step-up
White LED Driver
with True PWM Dimming
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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Monolithic Power Systems, Inc.
VIN vs. Efficiency
100
95
90
85
80
75
70
4 8 12 16 20 24
V_IN(V)
MP3310 Rev.1.0
www.MonolithicPower.com
1
7/5/2011
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