Power switches provide complete USB port protection

To improve system robustness, the power switches deliver a fast transient response of 2µs to prevent spurious shutdown or restart. They provide tight tolerance current limiting at ratings of 0.8A, 1.4A or 2.0A, over-temperature and short-circuit protection as well as controlled rise-time and under-voltage lockout functionality.

The AP21x2A products integrate an automatic output discharge function to provide controlled discharge of disabled output capacitor voltage and offer improvement in on-resistance over existing dual channel devices. A 7ms deglitch time on the power switch's fault report flag prevents any false over-current reporting and does not require the addition of any external components. The package options with industry standard pin-outs are: SO8, MSOP-8, MSOP-8-EP and DFN3030E-8.

The devices are UL Recognized and IEC 60950-1 CB Scheme Certified to ensure public safety and product quality. Their ambient operating temperature range is -40 to 85oC.