I/O Expander Load Switches with Serial Control

Manufacturer's part number :


Manufacturer Skyworks


Description :

The AAT4291A SmartSwitch products are members of AnalogicTech's Application Specific Power MOSFET™ (ASPM™) product family. The AAT4290A and AAT4291A are five and three P-channel MOSFETs, respectively, configured for use as a microprocessor I/O expander. Having independent drain outputs and a common source input, they operate with an input voltage ranging from 1.8V to 5.5V, making them ideal for 2.5V, 3.3V, or 5V systems, as well as systems powered by lithium-ion/polymer batteries. Each switch features a 500ns turn-on time. The switch states are controlled by a Simple Serial Control™ (S²Cwire™) interface which permits ease of control and efficiency of size. The quiescent supply current is very low, typically 5μA. In shutdown mode, the supply current is reduced to less than 1μA. The AAT4291A are offered in a Pbfree, 8-pin SC70JW package specified over the -40°C to +85°C temperature range.

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    • 1.8V to 5.5V Input Voltage Range
    • 5 or 3 Independent Load Switches
    • Simple Serial Control™ (S2Cwire™) Interface
    • 1.1Ω RDS(ON) Per Switch
    • Low Quiescent Current 4.5μA Typical, 0.1μA in Shutdown
    • -40°C to +85°C Temperature Range
    • 8-Pin SC70JW Package

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