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EZBuck™ 2A Simple Buck Regulator
February 2006

February 2006 www.aosmd.com Page 1 of 16

General Description
The AOZ1010 is a high efficiency, simple to use, 2A buck
regulator. The AOZ1010 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 AOZ1010 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
• 130 m Ω internal PFET switch for high
efficiency: up to 95%
• Internal Schottky Diode
• 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
• 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

L1
C2
VOUT
AOZ1010
C1
LX
VIN
FB
PGND
COMP
EN
AGND
10uF
47uF
4.7uH
From uPC
RC
CC
R1
R2
+3.3V Output
@2A
VIN


Figure 1. 3.3V/2A Buck Down Regulator