Dallas, Tex.Diodes Inc. has introduced a family of 12 USB power switches, providing a cost effective and small form fit for USB ports in a wide range of consumer and computing applications.
Both single and dual channel power switches are available, with all devices being optimized for self-powered and bus-powered USB applications and fully compliant with all USB standards.
The AP21XX high-side power switch range has been created for USB port applications that require fast response, high accuracy over-current and over-temperature protection, such as HD televisions, set top boxes and PCs. Offering designers 0.75A, 1.5A and 2.1A current limiting options and a choice of active-high and active-low enable, the AP21XX optimizes port protection in a host of different systems.
The power switches include an internal sensing FET, which monitors for over-current conditions without increasing series resistance in the current path and an over-temperature sensor. If either over-current or over-temperature conditions are sensed, then the device switches into its current limiting mode. To prevent unwanted tripping when a high capacity load is connected to the device output, a 7ms deglitch timeout has also been included in the AP21XX's design.
The USB power switch family is provided in small footprint SOT25, SOP-8L and MSOP-8L-EP packages. All of which are direct replacements for existing industry standard parts. Device operating ambient temperature range is from -40° to 85°C.
Pricing: $0.35 for 1k quantities.
Availability: Single power switches in SOT25and are available through regular distribution channels.
Diodes Inc., www.diodes.com