Closed circuit LED driver AS1170

adjustablePWMhigh-efficiency

The AS1170 is a 2-channel LED/VCSEL driver with integrated boost converter. It can support up to 5.5V output voltage and each channel can support 1000mA output current. Currents can be combined to a total of 2000mA and adjusted using 31.25kHz PWM operation. AS1170 features integrated protection functions against overtemperature, over- or under voltage and open of shorted LED pins. The device has an I2C interface with 2 adresses, selectable via an I2C select pin. The 13 balls WLCSP makes this chip a good fit wherever high output currents and a tiny footprint are needed. Details Features High efficiency 4 MHz fixed frequency DCDC boost converter Independent channel control High output current Channels can be combined for single output Integrated protection functions Automatic current adjustment for low battery voltage 13 balls WLCSP 2.25 mm x 1.5 mm x 0.6 mm Benefits Very compact/small 1µH inductor due to fast switching frequency Can drive 2 channels independently with up to 1000mA each or 2000mA combined Integrated circuit protection Automatic battery lifetime extension Tiny footprint and BOM for applications with space constraints Application fields Industrial Robotics Home & building automation Projection & display Factory automation Access control & security Mobile & wearables Authentication