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TPS2202YDB Datasheet

  • TPS2202YDB

  • DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR SERIAL PCMCIA...

  • 21頁(yè)

  • TI

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TPS2202, TPS2202Y
DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES
FOR SERIAL PCMCIA CONTROLLERS
SLVS103A 鈥?DECEMBER 1994 鈥?REVISED AUGUST 1995
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Fully Integrated V
CC
and V
pp
Switching for
Dual-Slot PC Card Interface
Saves PCMCIA Controller I/O Leads by
Utilizing 3-Lead Serial Interface
Meets PCMCIA Standards
Internal Charge Pump (No External
Capacitors Required) 鈥?12-V Supply Can Be
Disabled Except for Flash Programming
Short Circuit and Thermal Protection
Space-Saving 30-Pin SSOP(DB) Package
Compatible With 3.3-V, 5-V and 12-V PC
Cards
Power Saving I
DD
= 83
碌A(chǔ)
Typ, I
Q
= 1
碌A(chǔ)
Low r
DS(on)
(160-m鈩?V
CC
Switch)
Break-Before-Make Switching
ESD Protection Up to 2 kV Per
Mil-STD-883C, Method 3015
DB OR DF PACKAGE
(TOP VIEW)
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
AVCC
GND
APWR_GOOD
NC
3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
5V
NC
NC
NC
NC
V
DD
12V
BVPP
BVCC
BVCC
BVCC
BPWR_GOOD
OC
3V
3V
NC 鈥?No internal connection
description
The TPS2202 PC Card (PCMCIA) power-interface switch provides an integrated power-management solution
for two PC Cards. All of the discrete power MOSFETs, a logic section, current limiting, thermal protection, and
power-good reporting for PC Card control are combined on a single integrated circuit (IC), using Texas
Instruments LinBiCMOS鈩?process. The circuit allows the distribution of 3-V, 5-V, and/or 12-V card power by
means of a reduced I/O serial interface. 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 a
bad card.
The TPS2202 maximizes battery life by using an internal charge pump to generate its own switch-drive voltage.
Therefore, the 12-V supply can be powered down and only brought out of standby when flash memory needs
to be written to or erased. End equipment for the TPS2202 includes notebook computers, desktop computers,
personal digital assistants (PDAs), digital cameras, handiterminals, and bar-code scanners.
typical PC-card power-distribution application
VDD
Power Supply
12 V
5V
3V
12V
5V
3V
TPS2202
AVPP
AVCC
AVCC
AVCC
3
PCMCIA
Controller
Serial Interface
APWR_GOOD
BPWR_GOOD
OC
BVPP
BVCC
BVCC
BVCC
Vpp1
Vpp2
VCC
VCC
Vpp1
Vpp2
VCC
VCC
PC
Card A
PC
Card B
LinBiCMOS is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
1995, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
6鈥?

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