Linear LTC3675七路大功率PMIC管理方案
Linear 公司的LTC3675是七路可配置大功率PMIC，包括多个输出的电源和两串LED驱动器。LTC3675集成了四个同步降压DC/DC转换器（1A/1A/500mA/500mA)，一个1A升压转换器和一个降压-升压转换器，两个I2C控的40V LED驱动器以及常开的25mA LDO.其中的C可编程输出电压，工作模式和开关节点转换速率，主要用在5-10W大功率单个锂离子/聚合物电池，手提工业应用，手提仪表和终端以及多输出低压电源。本文介绍了LTC3675主要特性，方框图，以及多种典型应用电路。
LTC3675 - 7-Channel Configurable High Power PMIC
The LTCR3675 is a digitally programmable high efficiency multioutput power supply plus dual string LED driver IC optimized for high power single cell Li-Ion/Polymer applications.
The DC/DCs consist of four synchronous buck converters (1A/1A/500mA/500mA), one synchronous boost DC/DC (1A), and one buck-boost DC/DC (1A) all powered from a 2.7V to 5.5V input. The 40V LED driver can regulate up to 25mA of current through two LED strings with up to 10 LEDs each. The LED driver may also be configured as a general purpose high voltage boost converter.
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