Power switches are optimised for USB protection
A Diodes Incorporated product story
Edited by the Electronicstalk editorial team Dec 21, 2009
Diodes Incorporated has introduced 0.5A single-channel power switches optimised for USB-port protection and other 3-5V hot-swap interconnects.
The AP2145 (active low enable) and AP2155 (active high enable) provide complete protection solutions for consumer, computing and communication applications subject to the possibility of heavy capacitive loads and short circuits.
The power switches are fully compliant with USB standards and are available in industry-standard SOP-8L and exposed-pad MSOP-8L-EP packages.
Their 10us transient response time prevents unnecessary system shutdown or restart, while their accurate 1A current limiting capability helps reduce system rail current requirements and related component costs.
Offering reverse current blocking, over-current, over-temperature and short-circuit protection, as well as controlled rise time and under-voltage lockout, the AP21X5 parts are said to significantly improve the robustness of USB ports.
In addition, an inbuilt 7ms deglitch period on the flag output will prevent erroneous over-current reporting, without the need for any external components.
UL and IEC60950-1CB scheme certified, the power switches are said to meet industry's most rigorous safety standards.
Operating temperature rating is -40 to 85C and current consumption in shutdown mode is a maximum of 1uA.
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