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.
Provides S-CARD and M-CARD Power Management for CableCARD Applications****
Single-Slot Switch: TPS2220A
Dual-Slot Switches: TPS2223A, TPS2224A,
TPS2226A
Fast Current Limit Response Time
Fully Integrated VCC and VPP Switching for
3.3 V, 5 V, and 12 V (no 12 V on TPS2223A)
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, 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
CableCARD is a trademark of Cable Tevelision Laboratories, Inc.
3PC Card, CardBus are trademarks of PCMCIA (Personal Computer Memory Card International Association).
All other trademarks are the property of their respective owners
