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AAT4601 Datasheet Preview

AAT4601 Datasheet

1.8A Current Limited P-Channel Switch

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General Description
The AAT4601 SmartSwitch is a member of Skyworks'
Application Specific Power MOSFET™ (ASPM™) product
family. It is a 1.8A current limited P-channel MOSFET
power switch designed for high-side load switching appli-
cations. This switch operates with inputs ranging from
2.7V to 5.5V, making it ideal for both 3V and 5V systems.
An integrated current-limiting circuit protects the input
supply against large changes in load current which could
cause the supply to fall out of regulation. The AAT4601
has protection from thermal overload which limits power
dissipation and junction temperatures. The maximum
current limit level will guarantee that 1.8A can be deliv-
ered to the load; the actual threshold is programmed
with a resistor from the SET pin to ground. The quiescent
supply current is typically 12μA. In shutdown mode, the
supply current decreases to less than 1μA.
The AAT4601 is available in a Pb-free, 8-pin SOP pack-
age and is specified over the -40°C to +85°C tempera-
ture range.
DATA SHEET
AAT4601
1.8A Current Limited P-Channel Switch
Features
• Input Voltage: 2.7V to 5.5V
• Programmable Over-Current Threshold
• Low Quiescent Current
12μA Typical
Less Than 1μA with Switch Off
• Only 2.5V Needed for ON Control
• Thermal Shutdown
• Fault Flag
• 2ms Fault Blanking
• Under-Voltage Lockout
• Temperature Range: -40°C to +85°C
• 4kV ESD Rating
• UL Approved—File No. E217765
• 8-Pin SOP Package
Applications
• Hot Swap Supplies
• Notebook Computers
• Peripheral Ports
• USB Ports
UL Recognized Component
Typical Application
INPUT
100kΩ
1μF ON
1
IN
2
IN
8 FAULT
AAT4601
3
ON
GND
4
6
OUT
7
OUT
5
SET
RSET
OUTPUT
1μF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201913A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 3, 2012
1




Skyworks

AAT4601 Datasheet Preview

AAT4601 Datasheet

1.8A Current Limited P-Channel Switch

No Preview Available !

DATA SHEET
AAT4601
1.8A Current Limited P-Channel Switch
Pin Descriptions
Pin #
1, 2
3
4
5
6, 7
8
Symbol
IN
ON
GND
SET
OUT
FAULT
Function
These pins are the input to the P-channel MOSFET source. Connect a 1μF capacitor from IN to GND.
Active low enable input. A logic low turns the switch on.
Ground.
Current limit set input. A resistor from SET to ground sets the current limit for the switch.
These pins are the P-channel MOSFET drain connection. Connect a 1μF capacitor from OUT to GND.
Fault indication output. This open-drain output goes low when in current limit or when the die tem-
perature exceeds +135ºC, with a 2ms delay after the fault event occurs.
Pin Configuration
SOP-8
(Top View)
IN 1
IN 2
ON 3
GND 4
8 FAULT
7 OUT
6 OUT
5 SET
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 201913A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 3, 2012


Part Number AAT4601
Description 1.8A Current Limited P-Channel Switch
Maker Skyworks
Total Page 13 Pages
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