AOZ1084 Datasheet | Alpha & Omega Semiconductors

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 160m V LED current feedback voltage minimizes the power dissipation of the external sense resistor. The fixed switching frequency of 450k Hz 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 pensation - 1.2A continuous output current - Fixed 450k Hz PWM operation - Internal soft start - 160m V 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 Typical Application C1 4.7µF C3 VIN BS DIM LX L1 2.2µH LED1 VOUT C2 10µF Figure 1. 1.2A Buck HB LED Driver Rev. 0.3 April 2012 .aosmd. Page 1 of 12 Ordering Information Part Number AOZ1084DI Ambient Temperature Range -40 °C to +85 °C Package DFN2x2-8L AOS Green Products use reduced levels of Halogens, and are also Ro HS pliant. Please visit .aosmd./media/AOSGreen Policy.pdf for additional...