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
● 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
● 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
●PC Card is a trademark of PCMCIA (Personal Computer Memory Card International Association).
●PowerPAD is a trademark of Texas Instruments.
