ETA2840

The ETA2840 is a wide input range, high-efficiency, and high frequency DC-to-DC step-down LED driver, capable of delivering up to 1.5A of output current. ETA2840 provide 0.16V feedback voltage, which minimize the power loss on the sense resistor in a LED driver system. With a fixed switching frequency of 600KHz, This current mode PWM controlled LED Driver allows the use of small external components, such as ceramic input and output caps, as well as small inductors. ETA2840 also employs a proprietary control scheme that switches the device into a power save mode during light load, thereby extending the range of high efficiency operation. An OVP function protects the IC itself and its downstream system against input voltage surges. With the hysteresis, EN can be controlled by the ambient light-sensitive resistor.