AOZ1019 Datasheet, PDF (1/14 Pages) Alpha & Omega Semiconductors – EZBuck™ 2A Simple Regulator

AOZ1019
EZBuck™ 2A Simple Regulator
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
R2
20kΩ
C5
1nF
EN
LX
AOZ1019
COMP
FB
C2
AGND PGND
L1
4.7µH
VOUT
R2
C4, C6
22µF
Ceramic
R3
Rev. 1.0 September 2007
Figure 1. 3.3V/2A Buck Regulator
www.aosmd.com
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