AAT4610 Datasheet, PDF (1/10 Pages) Advanced Analogic Technologies – Current Limited Load Switch in SOT-23 Package

General Description
The AAT4610 SmartSwitch is a current limited P-
channel MOSFET power switch designed for high-
side load switching applications. This switch oper-
ates 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 currents which may cause the supply
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 1A. 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 Pb-free 5-pin SOT23
package and is specified over the -40°C to +85°C
temperature range.
AAT4610
Current Limited Load Switch
Features
SmartSwitch^™
• Input Voltage Range: 2.7V to 5.5V
• 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
• Under-Voltage Lockout
• Thermal Shutdown
• 4kV ESD Rating
• UL Approved—File No. E217765
• 5-Pin SOT23 Package
• Temperature Range: -40°C to +85°C
Applications
• Hot Swap Supplies
• Notebook Computers
• Peripheral Ports
• Personal Communication Devices
Typical Application
UL Recognized Component
INPUT
ON (ON)
1μF
IN
OUT
AAT4610
ON/(ON)
GND
SET
R_SET
OUTPUT
0.47μF
GND
GND
4610.2006.09.1.3
Not recommended for new designs; pin-for-pin upgrade: AAT4610A.
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