AOZ1977-1

AOZ1977-1 High Voltage LED Driver IC General Description The AOZ1977-1 is a high-efficiency LED driver controller for high voltage LED backlighting applications. It is designed to drive high-brightness LED light bar in LED TV applications. The AOZ1977-1 can support a wide range of input and output voltages. The input bias voltage of AOZ1977-1 is from 8V to 30V. The AOZ1977-1 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 catastrophic failure conditions. Cycle-by-cycle current protection limits the peak inductor current. Thermal shutdown provides another level of protection. Low feedback voltage (500mV) helps reduce power loss. The AOZ1977-1 features sync function to allow for synchronization with external clock or multiple AOZ1977-1. The AOZ1977-1 is available in a standard SO-16 package and operates over the temperature range of -40°C to +85°. Features 8V to 30V input bias voltage Up to 16V driving capability at GATE pin and DPWM pin. Disconnect control pin for PWM dimming or fault conditions. Bi-directional Clock synchronization 500mV feedback regulation Feedback short protection 8 bit PWM dimming resolution Cycle-by-cycle current limit Output over-voltage protection LED short and open protection Thermal shutdown protection SO-16 package Applications LCD TV LED backlight LED monitor General LED light...