AOZ1015AI Alpha & Omega

AOZ1015 EZBuck 1.5A Non-Synchronous Buck Regulator General Description Features The AOZ1015 is a high efficiency, simple to use, 1.5A 4.5V to 16V operating input voltage range buck regulator. The AOZ1015 works from a 4.5V to 130m internal PFET switch for high efficiency: 16V input voltage range, and provides up to 1.5A of up to 95% continuous output current with an output voltage Internal Schottky diode adjustable down to 0.8V. Internal soft start The AOZ1015 comes in an SO-8 package and is rated Output voltage adjustable to 0.8V over a -40C to +85C ambient temperature range. 1.5A 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 AOZ1015 R2 COMP C4, C6 R1 FB 22F x 2 Ceramic R3 C 5 AGND PGND C 2 1nF Figure 1. 3.3V/1.5A Buck Regulator Rev. 1.4 April 2011 www.aosmd.com Page 1 of 15AOZ1015 Ordering Information Part Number Ambient Temperature Range Package Environmental AOZ1015AI -40C to +85C SO-8 RoHS All AOS Products are offering in packaging with Pb-free plating and compliant to RoHS standards. 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. 1.4 April 2011 www.aosmd.com Page 2 of 15