AOZ1034

AOZ1034 EZBuck™ 4A Synchronous Buck Regulator General Description The AOZ1034 is a synchronous high efficiency, simple to use, 4A buck regulator. The AOZ1034 works from a 4.5V to 18V input voltage range, and provides up to 4A of continuous output current with an output voltage adjustable down to 0.8V. The AOZ1034 comes in both a 5x4 DFN-8 and an exposed pad SO-8 package and is rated over a -40°C to +85°C ambient temperature range. Features z 4.5V to 18V operating input voltage range z Synchronous rectification: 60mΩ internal high-side z z z z z z z z z z switch and 20mΩ Internal low-side switch High efficiency: up to 95% Internal soft start Output voltage adjustable to 0.8V 4A continuous output current Fixed 500kHz PWM operation Cycle-by-cycle current limit Pre-bias start-up Short-circuit protection Thermal shutdown Thermally enhanced 5x4 DFN-8 and exposed pad SO-8 packages Applications z Point of load DC/DC conversion z PCIe graphics cards z Set top boxes z DVD drives and HDD z LCD panels z Cable modems z Telecom/Networking/Datacom equipment Typical Application VIN C1 22µF Ceramic VIN EN COMP RC CC L1 4.7µH AOZ1034 LX R1 VOUT FB AGND PGND R2 C2, C3 22µF Ceramic Figure 1. 3.3V 4A Synchronous Buck Regulator Rev. 1.1 September 2010 www.aosmd.com Page 1 of 18 Free Datasheet http://www.datasheet4u.com/ AOZ1034 Ordering Information Part Number AOZ1034DI AOZ1034PI Ambient Temperature Range -40°C to +85°C Package 5x4 DFN-8 Exposed Pad SO-8 Environmental Green Prod...