Power Interface Switch 30-Pin SSOP T/R

The TPS2223, TPS2224 and TPS2226 Card-Bus power-interface switches provide an integrated power-management solution for two PC Card sockets. 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. 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 TPS2223 does not support 12-V switching to VPP. See the available options table for pin-compatible device information

Fully Integrated V_CC and V_pp Switching for 3.3 V, 5 V, and 12 V (no 12 V on TPS2223)

Meets Current PC Card™ Standards

V_pp Output Selection Independent of V_CC

12-V and 5-V Supplies Can Be Disabled

TTL-Logic Compatible Inputs

Short-Circuit and Thermal Protection

24-Pin HTSSOP, 24- or 30-Pin SSOP

140-µA (Typical) Quiescent Current from 3.3-V Input

Break-Before-Make Switching

Power-On Reset

–40°C to 85°C Operating Ambient Temperature Range

applications

• Notebook and Desktop Computers
• Bar Code Scanners
• Digital Cameras
• Set-Top Boxes
• PDAs