AOZ1283PI Datasheet, PDF (1/15 Pages) Alpha & Omega Semiconductors – EZBuck™ 2.5A Simple Buck Regulator

AOZ1283
EZBuck™ 2.5A Simple Buck Regulator
General Description
The AOZ1283 is a high voltage, high efficiency, simple to
use, 2.5A buck regulator optimized for a variety of
applications. The AOZ1283 works from a 3.0V to 36V
input voltage range, and provides up to 2.5A of
continuous output current. The output voltage is
adjustable from 30V down to 0.8V.
The AOZ1283 integrates an N-channel high-side power
MOSFET. The switching frequency can set from 200kHz
to 2MHz with an external resistor. The soft-start time can
be set with an external capacitor.
Features
 3.0V to 36V operating input voltage range
 50mΩ internal NMOS
 Up to 95% efficiency
 Adjustable soft-start
 Output voltage adjustable from 0.8V to 30V
 2.5A continuous output current
 Adjustable switching frequency from 200kHz to 2MHz
 Cycle-by-cycle current limit
 Short-circuit protection
 Over-voltage protection
 Over-temperature protection
 EPAD SO-8 package
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 up to 36V
CIN
CSS
VIN SS BS
FSW
LX
RF
AOZ1283
EN
FB
COMP
CC
GND
RC
L1
22µH
VOUT
R1
CO
R2
Rev. 0.4 June 2012
Figure 1. 36V/2.5A Buck Regulator
www.aosmd.com
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