AOZ1282CI Datasheet, PDF (1/13 Pages) Alpha & Omega Semiconductors – EZBuck™ 1.2A Simple Buck Regulator

AOZ1282CI
EZBuck™ 1.2A Simple Buck Regulator
General Description
The AOZ1282CI is a high efficiency, simple to use, 1.2A
buck regulator flexible enough to be optimized for a
variety of applications. The AOZ1282CI works from a
4.5V to 36V input voltage range, and provides up to 1.2A
of continuous output current. The output voltage is
adjustable down to 0.8V. The fixed switching frequency
of 450kHz PWM operation reduces inductor size.
Features
 4.5V to 36V operating input voltage range
 240mΩ internal NMOS
 Up to 95% efficiency
 Internal compensation
 1.2A continuous output current
 Fixed 450kHz PWM operation
 Internal soft start
 Output voltage adjustable down to 0.8V
 Cycle-by-cycle current limit
 Short-circuit protection
 Thermal shutdown
 Small size SOT23-6L
Applications
 Point of load DC/DC conversion
 Set top boxes and cable modems
 DVD drives and HDDs
 LCD Monitors & TVs
 Telecom/Networking/Datacom equipment
Typical Application
VIN
C1
4.7µF
VIN
C3
BS
EN
AOZ1282CI ^LX
FB
GND
L1
22µH
VOUT
R1
C2
10µF
R2
Figure 1. 1.2A Buck Regulator
Rev. 0.5 September 2012
www.aosmd.com
Page 1 of 13