TPS2211A

SINGLE-SLOT PC CARD POWER INTERFACE SWITCH

FOR PARALLEL PCMCIA CONTROLLERS

SLVS282A – SEPTEMBER 2000 – REVISED NOVEMBER 2002

12

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Figure 24

0.26

0.27

0.28

0.29

0.3

0.31

0.32

0.33

–50

–25

0

25

50

75

100

125

SHORT-CIRCUIT OUTPUT CURRENT

vs

JUNCTION TEMPERATURE

TJ – Junction Temperature – °C

APPLICATION INFORMATION

overview

PC Cards were initially introduced as a means to add EEPROM (flash memory) to portable computers with

limited onboard memory. The idea of add-in cards quickly took hold; modems, wireless LANs, GPS systems,

multimedia, and hard-disk versions were soon available. As the number of PC Card applications grew, the

engineering community quickly recognized the need for a standard to ensure compatibility across platforms.

To this end, the PCMCIA (Personal Computer Memory Card International Association) was established,

comprised of members from leading computer, software, PC Card, and semiconductor manufacturers. One key

goal was to realize the plug and play concept, i.e. cards and hosts from different vendors should be compatible.

PC Card power specification

System compatibility also means power compatibility. The most current set of specifications (PC Card Standard)

set forth by the PCMCIA committee states that power is to be transferred between the host and the card through