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AOZ1978 - Dual Channel High Voltage LED Driver IC

Description

The AOZ1978 is a dual-channel high-efficiency LED driver controller for high voltage LED backlighting applications.

It is designed to independently drive two high-brightness LED light bars in LED TV applications.

The AOZ1978 can support a wide range of input and output voltages.

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. An output flag to indicate the fault condition if output of any channel is shorted to ground. Low feedback voltage (500mV) helps to reduce power loss. The AOZ1978 is availabl.

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Full PDF Text Transcription

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AOZ1978 Dual Channel High Voltage LED Driver IC General Description The AOZ1978 is a dual-channel high-efficiency LED driver controller for high voltage LED backlighting applications. It is designed to independently drive two high-brightness LED light bars in LED TV applications. The AOZ1978 can support a wide range of input and output voltages. The input bias voltage range of AOZ1978 is from 8V to 18V. The AOZ1978 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.
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