The TPS2223A, TPS2224A, and TPS2226A
CardBus™ power-interface switches provide an integrated
power-management solution for two PC Card sockets. The TPS2220A is a
single-slot option for this family of devices. These devices allow the
controlled distribution of 3.3 V, 5 V, and 12 V to each card slot. The
current-limiting and thermal-protection features eliminate the need for fuses.
Current-limit reporting helps the user isolate a system fault. The switch
rDS(on) and current-limit values have been
set for the peak and average current requirements stated in the PC Card
specification, and optimized for cost. A faster maximum current limit response
time is the only difference between the TPS2223A, TPS2224A, and TPS2226A and
the TPS2223, TPS2224, and TPS2226.
Like the TPS2214 and TPS2214A and the TPS2216 and TPS2216A,
this family of devices supports independent VPP/VCC switching; however, the
standby and interface-mode pins are not supported. Shutdown mode is now
supported independently on SHDN as well as
in the serial interface. Optimized for lower power implementation, the TPS2223A
does not support 12-V switching to VPP. For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
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