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Z1051PI Datasheet

AOZ1051PI

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AOZ1051PI
EZBuck™ 3 A Synchronous Buck Regulator
General Description
The AOZ1051PI is a high efficiency, easy to use, 3 A
synchronous buck regulator. The AOZ1051PI works from
4.5 V to 18 V input voltage range, and provides up to 3 A
of continuous output current with an output voltage
adjustable down to 0.8 V.
The AOZ1051PI comes in an exposed pad SO-8
package and is rated over a -40 °C to +85 °C operating
ambient temperature range.
Features
z 4.5 V to 18 V operating input voltage range
z Synchronous Buck: 70 minternal high-side switch
and 40 minternal low-side switch (at 12 V)
z Up to 95 % efficiency
z External soft start
z Output voltage adjustable to 0.8 V
z 3 A continuous output current
z 500 kHz PWM operation
z Cycle-by-cycle current limit
z Pre-bias start-up
z Short-circuit protection
z Thermal shutdown
z Exposed pad SO-8 package
Applications
z Point of load DC/DC converters
z LCD TV
z Set top boxes
z DVD and Blu-ray players/recorders
z Cable modems
Typical Application
VIN
C1
10µF
RC
CC
CSS
VIN SS
EN
AOZ1051PI LX
COMP
FB
AGND
PGND
L1 4.7µH
R1
R2
VOUT
C2, C3
22µF
Rev. 1.0 June 2011
Figure 1. 3.3 V 3 A Synchronous Buck Regulator, Fs = 500 kHz
www.aosmd.com
Page 1 of 14
Free Datasheet http://www.datasheet4u.com/
Alpha & Omega Semiconductors
Alpha & Omega Semiconductors



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