AAT4601
1.5A Current Limited P-Channel Switch
General Description
The AAT4601 SmartSwitch鈩?is part of
AnalogicTech's Application Specific Power
MOSFET鈩?(ASPM鈩? 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 12碌A. In shut-
down mode, the supply current decreases to less
than 1碌A.
The AAT4601 is available in 8-pin SOP or TSSOP
specified over -40 to 85擄C.
Features
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SmartSwitch
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2.7V to 5.5V Input voltage range
Programmable over current threshold
Low quiescent current
鈥?12碌A typical
鈥?Less than 1碌A with Switch off
Only 2.5V needed for ON Control
Thermal Shutdown
Fault Flag
2ms Fault Blanking
Undervoltage Lockout
Temperature range -40 to 85擄C
2kV ESD rating
UL Approved鈥擣ile No. E217765
8-pin SOP or TSSOP package
Preliminary Information
Applications
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USB ports
Notebook computers
Peripheral ports
Hot swap supplies
UL Recognized Component
Typical Application
INPUT
OUTPUT
1
2
IN
IN
FAULT
OUT
6
7
100k鈩?/div>
8
3
AAT4601
OUT
SET
ON
GND
4
5
ON
1碌F
R
SET
1uF
4601.2001.11.0.92
1
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