power switches, USB, Diodes, AP21XX
Diodes Inc - Higher current power switches optimized for USB
News Release from:
Diodes Incorporated
17 November 2009
For higher current applications Diodes Incorporated has added two new devices to its AP21XX power switch product line. The single channel AP2101 and AP2111 provide a continuous output current capability up to 2A and have been optimized for use in self-powered and bus-powered USB and other 3-5V hot-swap applications.
Provided in both SO-8 and MSOP-8L-EP packages, the power switches are a very simple, cost effective form-fit for a wide range of consumer electronics, communications and computing products. High-side devices, the AP2101 and AP2111 offer designers the choice of active-low and active-high enable respectively.
Characterized by a fast transient response time of just 5µs, the devices prevent unnecessary system shutdown/restart and generally improve overall system robustness. In addition, the power switches' automatic output discharge function ensures a quick and well defined discharge of the output voltage capacitor.
Like all other devices in the AP21XX family, the new devices provide a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuits. The AP21XX devices offer reverse current blocking, over-current, over-temperature and short-circuit protection as well as controlled rise time and under-voltage lockout functionality.
To help reduce system rail power requirements and associated circuit costs, the AP2101 and AP2111, also have a very tight, 2.45A current limiting tolerance. A 7ms deglitch capability on the open drain flag output prevents false over-current reporting and requires no additional external components.
