AOZ1018 Datasheet, PDF (1/14 Pages) Alpha & Omega Semiconductors – EZBuck™ 2A Simple Regulator

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
● 4.5V to 16V operating input voltage range
● 130 mΩ 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
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
C1
Cd
22µF
1µF
VIN
From µPC
RC
CC
EN
AOZ1018 ^LX
COMP
FB
AGND PGND
L1
4.7µH
D1
VOUT
+3.3V Output @ 2A
R1
C2
47µF
R2
Figure 1. 3.3V/2A Buck Regulator
Rev. 1.0 November 2006
www.aosmd.com
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