AOZ1300 Datasheet, PDF (1/12 Pages) Alpha & Omega Semiconductors – Programmable 4A Power Distribution Switch

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
● 40mΩ 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
● Docking stations
● Notebook PCs
● RAID systems
● Telecom and Server hot-plug
● USB Power Distribution
● Compact PCI adapter Cards
Typical Application
VIN
IN
OUT
C1
1µF
R1
100kΩ
AOZ1300
FAULT
FLT
OFF ON
EN
SLEW
C3
10nF
GND
ISET
R2
10kΩ
VOUT _{TO USB}
PORT
C2
4.7µF
Figure 1. High Current USB Host
Rev. 1.3 August 2008
www.aosmd.com
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