LT8418 Half-Bridge GaN Driver Analog Devices Inc. LT8418 Half-Bridge GaN Driver is a 100V device with integrated top and bottom driver stages, driver logic control, and protections. The driver can be configured into synchronous half-bridge, full-bridge topologies or buck, boost, and buck-boost topologies. LT8418 provides strong current sourcing/sinking capability with 0.6Ω pull-up and 0.2Ω pull-down resistance. It also integrates a smart integrated bootstrap switch to generate a balanced bootstrap voltage from VCC with a minimum dropout voltage.