參數(shù)資料
型號(hào): TPS2211AIDBR
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝: GREEN, PLASTIC, SSOP-16
文件頁(yè)數(shù): 4/25頁(yè)
文件大?。?/td> 580K
代理商: TPS2211AIDBR
TPS2211A
SINGLESLOT PC CARD POWER INTERFACE SWITCH
FOR PARALLEL PCMCIA CONTROLLERS
SLVS282B SEPTEMBER 2000 REVISED JULY 2005
12
WWW.TI.COM
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
mA
SHORT-CIRCUIT OUTPUT CURRENT
vs
JUNCTION TEMPERATURE
I OS(A
VPP)
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
eight of the 68 terminals of the PC Card connectors. This power interface consists of two VCC, two Vpp, and four
ground terminals. Multiple VCC and ground terminals minimize connector-terminal and line resistance. The two
Vpp terminals were originally specified as separate signals but are commonly tied together in the host to form
a single node to minimize voltage losses. Card primary power is supplied through the VCC terminals;
flash-memory programming and erase voltage is supplied through the Vpp terminals.
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