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LP3931ISQXNSCN/a3200avai3 to 6 V, dual RGB LED driver with high current boost DC-DC


LP3931ISQX ,3 to 6 V, dual RGB LED driver with high current boost DC-DCFeaturesn High Efficiency Programmable 300 mA Magnetic BoostThe LP3931 is a RGB LED driver with hig ..
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LP3931ISQX
3 to 6 V, dual RGB LED driver with high current boost DC-DC
LP3931
Dual RGB LED Driver with High Current Boost DC-DC
Converter
General Description

The LP3931isa RGB LED driver with high current boost
DC-DC converter designedfor portable wireless applica-
tions.It contains2 setsof RGB LED drivers that are PWM-
driven with programmable color, intensity and blinking pat-
terns. They additionally featurea FLASH functionto support
picture taking with camera-enabled cellular phones. efficient magnetic boost DC/DC converter provides the
required bias, operating froma single Li-Ion battery. The
DC/DC converter output voltageis user programmablefor
adaptingto different LED types andfor efficiency optimiza-
tion.
All functions are software controllable throughthe SPI inter-
face and internal registers.
Features
High Efficiency Programmable 300 mA Magnetic Boost
DC-DC converter2 separately controlled PWM RGB LED drivers with
programmable color, brightness, turn on/off slopes and
blinking patterns FLASH function withupto6 outputs, eachupto
120 mA Functions software controlled through SPI interface Additional LED on/off and dimming hardware control Programmable low current Standby mode Low voltage digital interface downto 1.8V Space efficient 24-pin LLP package
Applications
GSM Cellular Phones WCDMA, CDMA and CDMA2000 Phones PHS and PDC Cellular Phone
Typical Application

August 2004
LP3931
Dual
RGB
LED
Driver
with
High
Current
Boost
DC-DC
Converter
ic,good price


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