MP1529
Fixed Frequency Step-Up Converter
LCD Backlight Plus Flash
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The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP1529 is a step-up converter for driving
two 6-LED backlight strings to 30mA and a
4-LED flash string to 150mA from a single
Lithium-Ion battery.
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The step-up converter generates an output
voltage as high as 25V from a 2.7V to 5.5V
input source. Three current sources drive in
three modes. In backlight mode two strings of 6
LEDs are lit with up to 30mA of current. In the
backlight plus preview mode the 4 flash LEDs
are lit with the preview current. In flash mode
the flash LEDs are lit with up to 150mA of
current and the two backlight strings are turned
off. There are three pins to independently set
the backlight, preview and flash current.
The MP1529 includes built-in open lamp over
voltage protection, cycle-by-cycle current limit,
over temperature shutdown, input under voltage
control and integrated soft-start.
The MP1529 is available in a tiny 16-pin 4mm x 4mm
package.
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2.7V to 5.5V Input Voltage Range
25V Maximum Step-Up Voltage
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