EZBuck™ 5A Simple Buck Regulator
AOZ1094
General Description
The AOZ1094 is a high efficiency, simple to use, 5A buck
regulator. The AOZ1094 works from a 4.5V to 16V input
voltage range, and provides up to 5A of continuous
output current with an output voltage adjustable down
to 0.8V.
The AOZ1094 comes in SO-8 and DFN-8 packages
and is rated over a -40°C to +85°C ambient temperature
range.
Features
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4.5V to 16V operating input voltage range
28m
Ω
internal PFET switch for high efficiency:
up to 95%
Internal soft start
Output voltage adjustable to 0.8V
Built-in Overvoltage Protection (OVP)
–
18% OVP threshold
5A continuous output current
Fixed 500kHz PWM operation
Cycle-by-cycle current limit
Short-circuit protection
Thermal shutdown
Small size SO-8 and DFN-8 packages
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Applications
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Point of load DC/DC conversion
PCIe graphics cards
Set top boxes
DVD drives and HDD
LCD panels
Cable modems
Telecom/networking/datacom equipment
Typical Application
VIN
C1
22μF
VIN
Enable
U1
L1 3.3μH
EN
COMP
AOZ1094
LX
R1
C2
22μF
Rs
20Ω
D1
Cs
1nF
R2
VOUT
3.3V
RC
CC
C5
1000pF
FB
AGND
GND
C3
22μF
Figure 1. 3.3V/5A Buck Down Regulator
Rev. 1.3 October 2010
www.aosmd.com
Page 1 of 19
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