AOZ1212 Datasheet, PDF (1/18 Pages) Alpha & Omega Semiconductors – EZBuck™ 3A Simple Buck Regulator

AOZ1212
EZBuck™ 3A Simple Buck Regulator
General Description
The AOZ1212 is a high efficiency, simple to use, 3A buck
regulator flexible enough to be optimized for a variety of
applications. The AOZ1212 works from a 4.5V to 27V
input voltage range, and provides up to 3A of continuous
output current on each buck regulator output. The output
voltage is adjustable down to 0.8V.
The AOZ1212 comes in an SO-8 or DFN-8 package and
is rated over a -40°C to +85°C ambient temperature
range.
Features
● 4.5V to 27V operating input voltage range
● 70mΩ internal NFET, efficiency: up to 95%
● Internal soft start
● Output voltage adjustable down to 0.8V
● 3A continuous output current
● Fixed 370kHz PWM operation
● Cycle-by-cycle current limit
● Short-circuit protection
● Thermal shutdown
● Small size SO-8 or DFN-8 package
Applications
● Point of load DC/DC conversion
● Set top boxes
● DVD drives and HDD
● LCD monitors and TVs
● Cable modems
● Telecom/networking/datacom equipment
Typical Application
VIN
C1
22µF
C7
VIN
BS
EN
LX
AOZ1212
VBIAS
FB
C4
COMP GND
R_C
C_C
L1
6.8µH
VOUT
R1
C2, C3
22µF
R2
Rev. 1.7 November 2010
Figure 1. 3.3V/3A Buck Regulator
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