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A706,pdf datasheet (high volta

消耗积分:5 | 格式:rar | 大小:333 | 2009-08-27

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The A706 is a high voltage Boost driver with 6 channels
adjustable constant current regulators for notebook LED
backlight applications. Six regulated current ports are
designed to provide uniform and pure DC constant current
sinks for driving LEDs within a large range VF variations. It
can drive a number of LEDs in series/parallel configuration
Users may adjust the output current from 5mA to 40mA
through an external resistor, RSET, which gives users
flexibility in controlling the light intensity of LEDs. It also
could adjust LED brightness from 0% to 100% via enable pin
(EN) with Pulse Width Modulation signal.
A feedback circuit is built in the between of Boost
Driver and the Current Regulators. It could output the lowest
dropout voltage among used channels to Boost Driver in
order to maintain the output voltage in optimal level.
The thermal protection function protects IC from over
temperature (160°C). Also, the thermal pad enhances the package power dissipation.
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