Power Interface Switch 24-Pin SSOP Tube

The TPS2220B power-interface switch provides an integrated power-management solution for single Card sockets. The device allows the controlled distribution of 3.3 V, 5 V, and 12 V to one 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 TPS2220A this device supports independent VPP/VCC switching. The TPS2220B is pin compatible with the TPA2220A execept for pin 20 of the TPS2220B which has no connection. 

Single-Slot Switch: TPS2220B

Fast Current Limit Response Time

Fully Integrated VCC and VPP Switching for 3.3 V, 5 V, and 12 V

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 and 24-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