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The TPS2220 power-interface switch provides an integrated power-management solution for single Card sockets. The device allows the controlled distribution of3.3V,5V,and12Vtoonecardslot. The current-limiting and thermal-protection features eliminate the need forfuses. Current-limi reporting helps the user isolate a system fault. The switch r DS(on) and current-limit values have been set for the peak and average current requirements statedinthePCCardspecification,and optimized for cost.
like the TPS2220A this device suppoits independent VPP/VCC switching .The TPS2220B is pin compatible with the TPS2220A exepect for pin 20 of the TPS2220B which has no connection.
TPS2220B Features
•Single-Slot Switch: TPS2220B •Fast Current Limit Response Time • Fully Integrated VCC and VPP Switching for 3.3V,5V,and 12V •Meets Current PC Card™ Standards •Vpp Output Selection Independent of VCC •12-V and 5-V Supplies Can Be Disabled •TTL-Logic Compatible Inputs • Short-Circuit and Thermal Protection •24-Pin HTSSOP and 24-Pin SSOP •140-µA(Typical)Quiescent current from 3.3-V Input •Break-Before-Make Switching