AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Features
•Built-In (Typical 110mΩ at 5.0V)
N-Channel MOSFET
•Output can be Forced Higher Than Input
(Off-State)
• Low Supply Current
100µA Typical On-State Current
1µA Typical Off-State Current
•1A minimum Continuous Load Current
•1.4A Typical Current Limit
•Open-Drain Fault Flag Output
•Hot Plug-In Application(Soft-Start)
•1.8V to 5.5V Operating Range
•1.7V Under-Voltage-Lockout(UVLO)
•Thermal Shutdown Protection
•SOP8 Package
General Description
The AT1601 is an integrated high-side power
switch optimized for self-powered and bus-
powered Universal Serial Bus (USB) applications.
With built-in a charge pump circuitry to drive the
internal MOSFET switch, the switch’s low on-
resistance meets USB voltage drop requirements.
A flag output is available to indicate fault
conditions to the local USB controller.
The AT1601 includes soft-start to limit inrush
current during plug-in, 1.4A current limit to limit
the output current to a safe level which meet the
UL 25VA safety requirements, thermal shutdown
to prevent catastrophic switch failure from high-
current loads, under voltage lockout (UVLO) to
ensure that the device remains off unless there is a
valid input voltage present, and an enable input
that is compatible with both 3.3V and 5V logic.
Applications
•High-Side Power Protection Switch
•USB Power Management
•Notebook, Motherboard PCs
System Block
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
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AIMTRON [ AIMTRON TECHNOLOGY ]
