AAT4610
Current Limited Load Switch in SOT-23 Package
General Description
The AAT4610 SmartSwitch™ is a member of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a 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, mak-
ing it ideal for both 3V and 5V systems. An inte-
grated current-limiting circuit protects the input sup-
ply against large currents which may cause the sup-
ply to fall out of regulation. The AAT4610 is also pro-
tected from thermal overload which limits power dis-
sipation and junction temperatures. It can be used
to control loads that require up to 1 A. Current limit
threshold is programmed with a resistor from SET to
ground. The quiescent supply current is typically a
low 15µA max. In shutdown mode, the supply cur-
rent decreases to less than 1µA.
The AAT4610 is available in a 5 pin SOT-23 spec-
ified over -40 to 85°C.
The AAT4600 Series is a family of adjustable and
fixed SmartSwitch™ with a range of current han-
dling capabilities. Available are single versions in
adj. current limit (AAT4600, AAT4601) as well as in
fixed current limit (AAT4602, AAT4625). Dual ver-
sions (AAT4620, AAT4626) are also available.
Features
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SmartSwitch
™
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2.7V to 5.5V Input voltage range
Programmable over current threshold
Fast transient response:
<1µs response to short circuit
Low quiescent current
• 15µA typical
• 1µA max with Switch off
160mΩ
typical R
DS(ON)
Only 2.5V needed for ON/OFF Control
Undervoltage Lockout
Thermal shutdown
Temp range -40 to 85°C
4kV ESD Rating
UL Approved—File No. E217765
5 pin SOT-23 package
Preliminary Information
Applications
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Peripheral ports
Notebook computers
Personal communication devices
Hot swap supplies
UL Recognized Component
Typical Application
INPUT
5
IN
AAT4610
SOT-23
1
OUTPUT
OUT
ON (ON)
4
3
ON/(ON)
GND
2
SET
R
SET
1µF
0.47µF
GND
GND
4610.2001.9.0.97
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