Power Switches Protect USB Ports
Coming in SOT25, SOP-8L, and MSOP-8L-EP packages, Diodes Incorporated’s AP21XX Series USB high-side power switches exhibit over-current and over-temperature protection. The components offer current limiting options of 0.75 A, 1.50 A, and 2.1 A, a choice of active-high and active-low enable, and replacement for existing industry-standard parts. The Series’ internal-sensing FET checks for over-current conditions without increasing series resistance in the current path. An over-temperature sensor switches devices into current limiting mode if either over-current or over temperature conditions are sensed. The single- and dual-channel switches have a 7 ms deglitch timeout to prevent unwanted tripping when a load is connected to the device output, while operating over an ambient temperature range from –40ºC to 85ºC. Pricing starts at $0.35 in 1,000 quantities.