AOZ1242AI Datasheet, PDF (1/18 Pages) Alpha & Omega Semiconductors – EZBuck™ 3A Simple Buck Regulator

AOZ1242
EZBuck™ 3A Simple Buck Regulator
General Description
The AOZ1242 is a high efficiency, simple to use, 3A buck
regulator flexible enough to be optimized for a variety of
applications. The AOZ1242 works from a 4.5V to 32V
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 AOZ1242 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 32V 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 & TVs
● Cable modems
● Telecom/networking/datacom equipment
Typical Application
VIN
C1
22µF
C7
VIN
BS
EN
LX
AOZ1242
VBIAS
FB
C4
COMP GND
R_C
C_C
L1
6.8µH
VOUT
R1
C2, C3
22µF x 2
R2
Rev. 1.4 November 2010
Figure 1. 3.3V/3A Buck Regulator
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