AOZ1056AI Datasheet, PDF (1/15 Pages) Alpha & Omega Semiconductors – EZBuck™ 2A Simple Buck Regulator

AOZ1056
EZBuck™ 2A Simple Buck Regulator
General Description
The AOZ1056 is a high efficiency, simple to use, 2A buck
regulator. The AOZ1056 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 AOZ1056 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
● 100mΩ internal PFET switch for high efficiency:
up to 95%
● Internal Schottky Diode
● Externally soft start
● Output voltage adjustable to 0.8V
● 2A continuous output current
● Fixed 340kHz 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
Css
82nF
SS
VIN
EN
U1
L1
6.8µH
VOUT
3.3V
AOZ1056 ^LX
COMP
R1
R_C
C5
FB
C2, C3
22µF Ceramic
C_C
AGND
PGND
R2
Rev. 1.2 September 2008
Figure 1. 3.3V/2A Buck Regulator
www.aosmd.com
Page 1 of 15