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AOZ1012D

Alpha & Omega Semiconductors
Part Number AOZ1012D
Manufacturer Alpha & Omega Semiconductors
Description 3A Simple Buck Regulator
Published Dec 7, 2007
Detailed Description www.DataSheet4U.com ^lwNMNOa= EZBuck™ 3A Simple Buck Regulator April 2006 General Description The AOZ1012D is a high e...
Datasheet PDF File AOZ1012D PDF File

AOZ1012D
AOZ1012D

Overview
www.
DataSheet4U.
com ^lwNMNOa= EZBuck™ 3A Simple Buck Regulator April 2006 General Description The AOZ1012D is a high efficiency, simple to use, 3A buck regulator.
The AOZ1012D works from a 4.
5V to 16V input voltage range, and provides up to 3A of continuous output current with an output voltage adjustable down to 0.
8V.
The AOZ1012D comes in 4X5 DFN-8 packages and is rated over a -40°C to +85°C ambient temperature range.
Features • 4.
5V to 16V operating input voltage range • 50 m Ω internal PFET switch for high efficiency: up to 95% • Internal Schottky Diode • Internal soft start • Output voltage adjustable to 0.
8V • 3A continuous output current • Fixed 500kHz PWM operation • Cycle-by-cycle current limit • Short-circuit protection • Thermal shutdown • Small size DFN-8 packages 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 22uF VIN From uPC EN L1 3.
3uH AOZ1012D COMP RC LX R1 VOUT +3.
3V Output @3A C2 FB GND R2 47uF CC Figure 1.
3.
3V/3A Buck Down Regulator April 2006 www.
aosmd.
com Page 1 of 17 www.
DataSheet4U.
com ^lwNMNOa Ordering Information Part Number AOZ1012DI Ambient Temperature Range -40°C to +85°C Package DFN-8 Environmental RoHS Compliant Pin Configuration 4X5 DFN VIN PGND AGND FB Pin Description Pin Number 1 2 3 Pin Name VIN PGND AGND Pin Function Supply voltage input.
When VIN rises above the UVLO threshold the device starts up.
Power ground.
Electrically needs to be connected to AGND.
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 floating.
PWM output connection to in...


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