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Alpha & Omega Semiconductors

AOZ1094 Datasheet Preview

AOZ1094 Datasheet

5A Simple Buck Regulator

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AOZ1094
EZBuck™ 5A Simple Buck Regulator
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
4.5V to 16V operating input voltage range
28minternal 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
Applications
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
RC
CC
EN U1
AOZ1094
COMP
C5
1000pF
AGND GND
LX
FB
L1 3.3μH
Rs
20Ω
D1
Cs
1nF
VOUT
3.3V
R1
C2
22μF
C3
22μF
R2
Rev. 1.3 October 2010
Figure 1. 3.3V/5A Buck Down Regulator
www.aosmd.com
Page 1 of 19




Alpha & Omega Semiconductors

AOZ1094 Datasheet Preview

AOZ1094 Datasheet

5A Simple Buck Regulator

No Preview Available !

Ordering Information
Part Number
Ambient Temperature Range
AOZ1094AIL
AOZ1094DIL
-40°C to +85°C
-40°C to +85°C
Package
SO-8
DFN-8
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.
AOZ1094
Environmental
Green Product
Green Product
Pin Configuration
VIN 1
PGND 2
AGND 3
FB 4
8 LX
7 LX
6 EN
5 COMP
VIN 1
PGND 2
AGND 3
FB 4
LX
AGND
8 LX
7 LX
6 EN
5 COMP
SO-8
(Top View)
4x5 DFN
(Top View)
Pin Description
Pin Number Pin Name
1 VIN
2 PGND
3 AGND
4 FB
5 COMP
Pin Function
Supply voltage input. When VIN rises above the UVLO threshold the device starts up.
Power ground. Electrically needs to be connected to AGND.
Reference connection for controller section. Also used as thermal connection for controller
section. Electrically needs to be connected to PGND.
The FB pin is used to determine the output voltage via a resistor divider between the output
and GND.
External loop compensation pin.
Rev. 1.3 October 2010
www.aosmd.com
Page 2 of 19


Part Number AOZ1094
Description 5A Simple Buck Regulator
Maker Alpha & Omega Semiconductors
Total Page 19 Pages
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