AAT4601 Datasheet, PDF (1/16 Pages) Advanced Analogic Technologies – 1.5A Current Limited P-Channel Switch

AAT4601
1.8A Current Limited P-Channel Switch
General Description
Features
SmartSwitch^™
The AAT4601 SmartSwitch is a member of
AnalogicTech's Application Specific Power MOS-
FET™ (ASPM™) product family. It is a 1.8A 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 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 regula-
tion. 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 delivered 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,
TSSOP, or MSOP package and is specified over
the -40°C to +85°C temperature range.
• 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, TSSOP, or MSOP Package
Applications
• Hot Swap Supplies
• Notebook Computers
• Peripheral Ports
• USB Ports
Typical Application
UL Recognized Component
INPUT
1µF
100kΩ
ON
1 _IN
2 _IN
8 _FAULT
AAT4601
3 _ON
GND
4
6
OUT
7
OUT
SET ⁵
R _SET
OUTPUT
1µF
4601.2006.05.1.3
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