General Description; Features; Typical Application - Skyworth 42E68 Instruction Manual

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.

Typical Application

VIN
C1
10μF
Rev. 1.0 June 2011
VIN
EN
AOZ1051PI
COMP
R
C
AGND
C
C
Figure 1. 3.3 V 3 A Synchronous Buck Regulator, Fs = 500 kHz
www.aosmd.com
EZBuck™ 3 A Synchronous Buck Regulator

Features

4.5 V to 18 V operating input voltage range
Synchronous Buck: 70 m internal high-side switch
and 40 m internal low-side switch (at 12 V)
Up to 95 % efficiency
External soft start
Output voltage adjustable to 0.8 V
3 A continuous output current
500 kHz PWM operation
Cycle-by-cycle current limit
Pre-bias start-up
Short-circuit protection
Thermal shutdown
Exposed pad SO-8 package
Applications
Point of load DC/DC converters
LCD TV
Set top boxes
DVD and Blu-ray players/recorders
Cable modems
C
SS
SS
L1 4.7μH
LX
FB
PGND
AOZ1051PI
VOUT
R1
C2, C3
22μF
R2
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