是一款降压型LED恒流驱动IC，SOT23-6封装，，输入电压为5到38V，输出电流最大为1A，效率高达97 ，含有PWM调光功能。主用在12V/24V LED MR16恒流板，LED手电筒板，LED背光驱动等等产品上-A buck type constant current LED driver IC, SOT23-6 package, input voltage of 5 to 38V, output current up to 1

AD7999挂接在SPI上的驱动参考，在平台SPI设备spi_board_info 结构添加对应设备描述。-4-Channel, 8-Bit ADC with I2C Compatible Interface in 8-Lead SOT-23