AAT4601
1.5A Current Limited P-Channel Switch
™
SmartSwitch
General Description
Features
The AAT4601 SmartSwitch™ is part of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a 1.5A
Current Limited P-channel MOSFET power switch
designed for high-side load-switching applications.
This switch operates with inputs ranging from 2.7V
to 5.5V, making it ideal for both 3V and 5V sys-
tems. An integrated current-limiting circuit protects
the input supply against large changes in load cur-
rent which could cause the supply to fall out of reg-
ulation. The AAT4601 has protection from thermal
overload which limits power dissipation and junc-
tion temperatures. The maximum current limit
level is 1.5A; the actual threshold is programmed
with a resistor from the SET pin to ground. The qui-
escent supply current is typically 12µA. In shut-
down mode, the supply current decreases to less
than 1µA.
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2.7V to 5.5V Input voltage range
Programmable over current threshold
Low quiescent current
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12µA typical
Less than 1µA with Switch off
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Only 2.5V needed for ON Control
Thermal Shutdown
Fault Flag
2ms Fault Blanking
Undervoltage Lockout
Temperature range -40 to 85°C
2kV ESD rating
UL Approved—File No. E217765
8-pin SOP or TSSOP package
Applications
The AAT4601 is available in 8-pin SOP or TSSOP
specified over -40 to 85°C.
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USB ports
Notebook computers
Peripheral ports
Hot swap supplies
UL Recognized Component
Typical Application
INPUT
OUTPUT
1
6
IN
OUT
2
7
IN
OUT
AAT4601
100kΩ
8
3
FAULT
ON
5
SET
ON
RSET
GND
4
1µF
1uF
4601.2001.11.0.92
1