AAT4626_08 Datasheet, PDF (1/15 Pages) Advanced Analogic Technologies – USB Dual-Channel Power Switch

SmartSwitch^TM
General Description
The AAT4626 SmartSwitch is part of AnalogicTech’s
Application Specific Power MOSFET™ (ASPM™) product
family. It is a dual-channel 500mA 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 regula-
tion. The AAT4626 is also protected from thermal over-
load which limits power dissipation and junction tem-
peratures. The current limit threshold is factory pro-
grammed at 1.0A, with a maximum of 1.5A. The quies-
cent supply current is typically a low 20μA. In shutdown
mode, the supply current decreases to less than 1μA.
The AAT4626 is available in a Pb-free, 8-pin SOP or
TSSOP package and is specified over the -40°C to +85°C
temperature range.
The AAT4600 series is a family of adjustable and fixed
SmartSwitch products with a range of current handling
capabilities. Single versions are available with adjustable
current limit (AAT4601) or fixed current limit (AAT4625),
as well as dual versions with fixed current limit
(AAT4626).
PRODUCT DATASHEET
AAT4626
USB Dual-Channel Power Switch
Features
• 2.7V to 5.5V Input Voltage Range
• Compliant to USB 1.1 and 2.0 Specifications
• 500mA (Min) Continuous Current per Channel
• 1.25A (Max) Current Limit per Channel
• 90mΩ Typical R_DS(ON)
• Low Quiescent Current:
▪ Typically 20μA
▪ 1μA Max with Switches Off
• Thermal Shutdown
• Slew Rate Limited Turn On
• Fault Flag with 2ms Blanking
• Under-Voltage Lockout
• Temperature Range: -40°C to +85°C
• UL Approved—File No. E217765
• 8-Pin SOP or TSSOP Package
Applications
• General-Purpose Power Switching
• Hot Swap Supplies
• Notebook Computers
• USB Ports and Peripherals
UL Recognized Component
Typical Application
100kΩ
100kΩ
VCC 5.0V
0.1μF
GND
7
IN
ENA
ENA
1
(ENA)
(ENA)
ENB
ENB
4
(ENB)
(ENB)
AAT4626
GND
6
FLGA ²
FLGB ³
OUTA ⁸
OUTB ⁵
47μF
OUTPUTA
OUTPUTB
47μF
GND
4626.2008.02.1.3
www.analogictech.com
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