BU64244GWZ 2-Wire Serial Interface Lens Driver ROHM Semiconductor BU64244GWZ 2-Wire Serial Interface Lens Driver is built for driving voice coil motors (VCM). The BU64244GWZ features ISRC (intelligent slew rate control) to reduce mechanical ringing, optimizing the camera’s auto focus capabilities. The ROHM BU64244GWZ is ideal for driving VCM actuators and autofocus in mobile camera modules. The device is available in a 0.77mm x 1.30mm x 0.36mm UCSP35L1 package.