26
8575
8575
A N/B Maintenance
A N/B Maintenance
1.2.5.1 Single-Slot PC Card Power Interface Switch: TPS2211A
The TPS2211A PC Card power-interface switch provides an integrated power-management solution for a
single PC Card. All of the discrete power MOSFETs, a logic section, current limiting, and thermal protection
for PC Card control are combined on a single integrated circuit, using the Texas Instruments LinBiCMOS
TM
process. The circuit allows the distribution of 3.3-V, 5-V, and/or 12-V card power, and is compatible with
many PCMCIA controllers. The current-limiting feature eliminates the need for fuses, which reduces
component count and improves reliability. Current-limit reporting can help the user isolate a system fault to
the PC Card.
The TPS2211A features a 3.3-V low-voltage mode that allows for 3.3-V switching without the need for 5 V.
Bias power can be derived from either the 3.3-V or 5-V inputs. This facilitates low-power system designs
such as sleep mode and pager mode where only 3.3 V is available.
End equipment for the TPS2211A includes notebook computers, desktop computers, personal digital assistants
(PDAs), digital cameras, and bar-code scanners.
