AOZ1018
EZBuck™ 2A Simple Regulator
General Description
The AOZ1018 is a high efficiency, simple to use, 2A buck
regulator. The AOZ1018 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 AOZ1018 comes in SO-8 packages and is rated over
a -40°C to +85°C ambient temperature range.
Features
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4.5V to 16V operating input voltage range
130 m
Ω
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
Thermal shutdown
Small size SO-8 packages
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Applications
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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
C1
22µF
Cd
1µF
VIN
L1
4.7µH
From µPC
EN
VOUT
AOZ1018
COMP
RC
CC
LX
R1
FB
D1
+3.3V Output @ 2A
C2
47µF
R2
AGND
PGND
Figure 1. 3.3V/2A Buck Regulator
Rev. 1.0 November 2006
www.aosmd.com
Page 1 of 14
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