The TPS2550 and TPS2551 power distribution switches have integrated FETs that support a 100-mA to 1.1-A current limit range for a standard USB port or other applications requiring a current limited switch. The PMICs also protect an input voltage supply against short-circuit conditions that may occur when using a USB connection in a mobile phone, notebook computer, LCD TV, gaming system or IP phone.
The power switches incorporate an 85-mΩ n-channel MOSFET into a 2 x 2-mm SON or a SOT-23 6-pin package. The devices operate from a 2.5 to 6.5-V input and minimize current surges by controlling rise and fall times. A 2-µs overcurrent response limits the output current by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short circuit is present. ($0.70 ea/1,000 available now.)
Texas Instruments , Dallas , TX
Product Information Center 800-477-8924
http://www.ti.com
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