New Products
November 19, 2009
Diodes Inc. Announces Higher Current Power Switches Optimized for USB
Diodes Inc. is introducing two new devices to its AP21XX power switch product line, targeted for higher current applications. 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 buspowered USB and other 3-5V hot-swap applications.
Provided in both SO-8 and MSOP-8L-EP packages, the power switches are described as 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 faster transient response time of just 5µs, the devices prevent unnecessary system shutdown or restart, and generally improve overall system robustness. In addition, the power switches’ automatic output discharge function ensures completely controlled discharging of the output voltage capacitor. Like all other devices in the AP21XX range, the new devices provide a complete protection solution for any application, subject to heavy capacitive loads and the prospect of short circuit, and 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.
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Primitive batteries capable of producing ½ volt of electricity were made in Mesopotamia between around 200 B.C. and 200 A.D. They were used mainly for electroplating silver onto copper.