AOZ1016AI Alpha & Omega

AOZ1016 EZBuck 2A Simple Buck Regulator General Description Features The AOZ1016 is a high efficiency, simple to use, 2A buck 4.5V to 16V operating input voltage range regulator. The AOZ1016 works from a 4.5V to 16V input 130m internal PFET switch for high efficiency: voltage range, and provides up to 2A of continuous up to 95% output current with an output voltage adjustable down Internal Schottky diode to 0.8V. Internal soft start The AOZ1016 comes in an SO-8 package and is rated Output voltage adjustable to 0.8V over a -40C to +85C ambient temperature range. 2A continuous output current Fixed 500kHz PWM operation Cycle-by-cycle current limit Short-circuit protection Under voltage lockout Output over voltage protection Thermal shutdown Small size SO-8 package Applications Point of load DC/DC conversion PCIe graphics cards Set top boxes DVD drives and HDD LCD panels Cable modems Telecom/networking/datacom equipment Typical Application VIN C1 22F Ceramic VIN L1 4.7H From PC EN VOUT LX AOZ1016 R2 COMP C4, C6 20k 22F Ceramic FB R3 C 5 AGND PGND C 2 1nF Figure 1. 3.3V/2A Buck Regulator Rev. 1.7 August 2009 www.aosmd.com Page 1 of 15AOZ1016 Ordering Information Part Number Ambient Temperature Range Package Environmental AOZ1016AI RoHS -40C to +85C SO-8 AOZ1016AIL Green Product AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs compliant.jsp for additional information. Pin Configuration 1 8 PGND LX 2 7 VIN LX 3 6 AGND EN 4 5 FB COMP SO-8 (Top View) Pin Description Pin Number Pin Name Pin Function 1 PGND Power ground. Electrically needs to be connected to AGND. 2V Supply voltage input. When V rises above the UVLO threshold the device starts up. IN IN 3 AGND Reference connection for controller section. Also used as thermal connection for controller section. Electrically needs to be connected to PGND. 4 FB The FB pin is used to determine the output voltage via a resistor divider between the output and GND. 5 COMP External loop compensation pin. 6 EN The enable pin is active HIGH. Connect EN pin to V if not used. Do not leave the EN pin IN floating. 7, 8 LX PWM output connection to inductor. Thermal connection for output stage. Rev. 1.7 August 2009 www.aosmd.com Page 2 of 15