max16826主要特性：_ external mosfets allow wide-range led current with multiple leds per string_ individual pwm dimming inputs per string_ very wide dimming range_ led string short and open protection_ adjustable led current rise/fall times improve emi control_ microcontroller interface using i2c allows led voltage monitoring and optimization using a 7-bit internal adc led short and open detection dynamic adjustment of led string currents and output voltagestandby mode_ integrated boost/sepic controller_ external switching frequency synchronization_ 4.75v to 24v operating voltage range and withstands 40v load dump_ overvoltage and overtemperature protectionmax16826应用：lcd backlighting:automotive infotainment displaysautomotive cluster displaysindustrial and desktop monitorslcd tvsautomotive lighting:adaptive front lightinglow- and high-beam assemblies图1。max16826简化方框图图2。max16826开关稳压器控制方框图图3。max16826基于sepic的驱动器电路图图4。max16826典型应用电路图max16826评估板the max16826 evaluation kit (ev kit) provides a proven design to evaluate the max16826, a four-string, i2c programmable high-brightness led (hb led) driver withpwm dimming control. the ev kit also includes windows® 2000/xp/vista®-compatible software that provides a simple graphical user interface (gui) for exercising the features of the max16826. the max16826 ev kit pcb comes with a max16826atj+ installed. the ev kit is configured in a boost application。this ev kit can be modified by changing component values on the board for other configurations (including rgb led applications). refer to the max16826 ic data sheet for more information。max16826评估板主要特性：_ four independently controllable led strings_ 7 leds per string configuration_ independently programmable 50ma to 150ma string current_ 7.5v to 22v input voltage_ can withstand automotive load dump up to 40v for 400ms_ 0% to 100% dim duty cycle range_ shorted led protection and detection_ open led string detection_ adaptive boost-stage voltage optimization_ convenient breakaway led driver board easily adaptable to end application_ low mechanical profile_ windows 2000/xp/vista (32-bit)-compatible software_ usb-pc interface_ usb-to-i2c on-board circuitry_ fully assembled and tested_ lead-free and rohs compliant图5。max16826评估板led驱动器电路图图6。max16826评估板控制器板电路图（1）图7。max16826评估板控制器板电路图（2）max16826评估板材料清单（bom）：