AOZ1300
Programmable 4A Power Distribution Switch
General Description
The AOZ1300 is a current-limited power distribution
switch intended for applications that require circuit
protection. The device operates from a 2.7V to
6.0V
input supply and provides up to 4A load current.
AOZ1300 offers robust fault protection features including
over-current/short-circuit protection and thermal overload
protection. The current limit is programmable with an
external resistor. An open-drain fault indicator is provided
to alert a system controller of thermal overload, over-
current, and short-circuit events. A 24ms fault blanking
time eliminates false alarms.
The AOZ1300 employs internal soft-start circuitry to
control inrush current due to highly capacitive loads
associated with hot-plug events. An adjustable slew rate
control pin provides additional slew rate control if needed.
The AOZ1300 is available in SO-8 package.
Features
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40m
Ω
maximum on-resistance
4A maximum continuous current
2.7V to
6.0V
operating voltage
Resistor programmable current limit
Reverse current blocking
Thermal overload protection
Very fast short-circuit response time
Fault latch with 24ms blanking time
Open-drain fault indicator
1µA shutdown current
Applications
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Docking stations
Notebook PCs
RAID systems
Telecom and Server hot-plug
USB Power Distribution
Compact PCI adapter Cards
Typical Application
VIN
IN
C1
1µF
R1
100kΩ
FLT
OFF ON
EN
SLEW
C3
10nF
GND
ISET
R2
10kΩ
OUT
C2
4.7µF
VOUT
TO USB
PORT
AOZ1300
FAULT
Figure 1. High Current USB Host
Rev. 1.3
August
2008
www.aosmd.com
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