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AOZ1019

Alpha and Omega Semiconductors
Part Number AOZ1019
Manufacturer Alpha and Omega Semiconductors
Description EZBuck 2A Simple Regulator
Published Apr 5, 2010
Detailed Description AOZ1019 EZBuck™ 2A Simple Regulator www.DataSheet4U.com General Description The AOZ1019 is a high efficiency, simple to ...
Datasheet PDF File AOZ1019 PDF File

AOZ1019
AOZ1019


Overview
AOZ1019 EZBuck™ 2A Simple Regulator www.
DataSheet4U.
com General Description The AOZ1019 is a high efficiency, simple to use, 2A buck regulator.
The AOZ1019 works from a 4.
5V to 16V input voltage range, and provides up to 2A of continuous output current with an output voltage adjustable down to 0.
8V.
The AOZ1019 comes in an SO-8 package and is rated over a -40°C to +85°C ambient temperature range.
Features ● ● ● ● ● ● ● ● ● ● ● ● 4.
5V to 16V operating input voltage range 130mΩ internal PFET switch for high efficiency: up to 95% Internal soft start Output voltage adjustable to 0.
8V 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 22µF Ceramic VIN LX L1 4.
7µH VOUT R2 EN AOZ1019 COMP R2 20kΩ C5 1nF C2 FB AGND PGND R3 C4, C6 22µF Ceramic Figure 1.
3.
3V/2A Buck Regulator Rev.
1.
0 September 2007 www.
aosmd.
com Page 1 of 14 AOZ1019 Ordering Information Part Number AOZ1019AI www.
DataSheet4U.
com Ambient Temperature Range -40°C to +85°C Package SO-8 Environmental RoHS Pin Configuration NC VIN AGND FB 1 2 3 4 8 7 6 5 PGND LX EN COMP SO-8 (Top View) Pin Description Pin Number 1 2 3 4 5 6 7 8 Pin Name NC VIN AGND FB COMP EN LX PGND Not connected.
Pin Function Supply voltage input.
When VIN rises above the UVLO threshold the device starts up.
Reference connection for controller section.
Also used as thermal connection for controller section.
Electrically needs to be connected to PGND.
The FB pin is used to determine the output voltage via a resistor divider between the output and GND.
External loop compensation pin.
The enable pin is active high.
Connect EN pin to VIN if not used.
Do not leave the EN pin floatin...


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