The AOZ1977 is a high-efficiency LED driver controller for high voltage LED backlighting applications. It is designed to drive a high-brightness LED light bar in LED TV applications. The AOZ1977 can support a wide range of input and output voltages. The input bias voltage of the AOZ1977 is from 8 V to 30 V.The AOZ1977 has multiple features to protect the regulator under fault conditions. A control pin can disable an external switch to disconnect the LEDs current path from the output in PWM dimming or under catastrophicfailure conditions. Cycle-by-cycle current protection limits the peak inductor current. Thermal shutdown provides an additional level of protection.Low feedback voltage (500 mV) helps reduce power loss.The AOZ1977 features a sync function to allow for synchronization with an external clock or multiple AOZ1977 devices.The AOZ1977 is available in a standard SO-16 package and operates over the -40 C to +85 C temperature range.