General Description

The AOZ1084 is a high efficiency, simple to use, 1.2A

buck HB LED driver optimized for general lighting

applications. The AOZ1084 works from a 4.5V to 36V

input voltage range, and provides up to 1.2A of

continuous LED current. The 160mV LED current

feedback voltage minimizes the power dissipation of the

external sense resistor. The fixed switching frequency of

450kHz PWM operation reduces inductor and capacitor

sizes.

The AOZ1084 is available in a tiny DFN2x2-8L package.

Features

 Up to 36V operating input voltage range

 420mΩ internal NMOS

 Up to 95 efficiency

 Internal compensation

 1.2A continuous output current

 Fixed 450kHz PWM operation

 Internal soft start

 160mV LED current feedback voltage with ±8

accuracy

 Cycle-by-cycle current limit

 Short-circuit protection

 Thermal shutdown

 Small size DFN2x2-8L

Applications

 General LED lighting

 Architectural lighting

 Signage lighting