AAT4625
USB Single-Channel Power Switch
General Description
The AAT4625 SmartSwitch™ is part of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a 1.0A
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 may cause the supply to fall out of regulation.
The AAT4625 is also protected from thermal over-
load which limits power dissipation and junction
temperatures. The current limit threshold is factory
programmed at 1.5A, with a maximum of 2.0A. The
quiescent supply current is typically a low 16µA. In
shutdown mode, the supply current decreases to
less than 1µA.
The AAT4625 is available in 8 pin SOP or TSSOP
and is specified over a -40 to 85°C temperature
range.
The AAT4600 Series is a family of adjustable and
fixed SmartSwitch™ products with a range of cur-
rent handling capabilities. Single versions with
adjustable current limit (AAT4601) or fixed current
limit (AAT4625) as well as dual versions with fixed
current limit (AAT4626) are available.
Features
•
•
•
•
•
•
SmartSwitch
™
•
•
•
•
•
•
Compliant with USB 1.1 and 2.0 specifications
2.7V to 5.5V Input voltage range
1.0A minimum continuous current
2.0A maximum current limit
60mΩ typical R
DS(ON)
Low quiescent current
• Typically 16µA
• 1µA max with Switch off
Thermal shutdown
Fault flag with 10ms blanking
Undervoltage Lockout
Temp range -40 to 85°C
UL Approved—File No. E217765
8 pin SOP or TSSOP package
Preliminary Information
Applications
•
•
•
•
USB ports and peripherals
Notebook computers
Hot swap supplies
General purpose power switching
UL Recognized Component
Typical Application
V
CC
5.0V
100k
2
1
7
6
IN
OUTPUT
OUT
AAT4625
FLG
EN (EN)
3
OUT
8
EN (EN)
0.1µF
120µF
GND
GND
4625.2002.1.0.93
1