AOZ1240AI Datasheet, PDF (1/15 Pages) Alpha & Omega Semiconductors – EZBuck™ 2A Simple Buck Regulator

AOZ1240
EZBuck™ 2A Simple Buck Regulator
General Description
The AOZ1240 is a high efficiency, simple to use, 2A buck
regulator flexible enough to be optimized for a variety of
applications. The AOZ1240 works from a 4.5V to 32V
input voltage range, and provides up to 2A of continuous
output current on each buck regulator output. The output
voltage is adjustable down to 0.8V.
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
● 2A continuous output current
● Fixed 370kHz PWM operation
● Cycle-by-cycle current limit
● Short-circuit protection
● Thermal shutdown
● Small size, SO-8
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
AOZ1240
VBIAS
FB
C4
COMP GND
R_C
C_C
L1
6.8µH
VOUT
R1
C2, C3
22µF x 2
R2
Rev. 1.3 September 2010
Figure 1. 3.3V/2A Buck Regulator
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