TPS2202, TPS2202Y
DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES
FOR SERIAL PCMCIA CONTROLLERS
SLVS103A – DECEMBER 1994 – REVISED AUGUST 1995
DB OR DF PACKAGE
• Fully Integrated V
and V Switching for
pp
CC
(TOP VIEW)
Dual-Slot PC Card Interface
• Saves PCMCIA Controller I/O Leads by
1
30
5V
5V
DATA
CLOCK
LATCH
NC
5V
Utilizing 3-Lead Serial Interface
2
29
28
27
26
25
24
23
22
21
20
19
18
17
16
NC
NC
NC
NC
3
• Meets PCMCIA Standards
• Internal Charge Pump (No External
Capacitors Required) – 12-V Supply Can Be
Disabled Except for Flash Programming
4
5
6
V
DD
7
12V
12V
• Short Circuit and Thermal Protection
• Space-Saving 30-Pin SSOP(DB) Package
8
AVPP
AVCC
AVCC
AVCC
GND
BVPP
BVCC
BVCC
BVCC
BPWR_GOOD
OC
9
10
11
12
13
14
15
• Compatible With 3.3-V, 5-V and 12-V PC
Cards
• Power Saving I
= 83 µA Typ, I = 1 µA
Q
DD
APWR_GOOD
NC
• Low r
(160-mΩ V
Switch)
CC
3V
3V
DS(on)
3V
• Break-Before-Make Switching
• ESD Protection Up to 2 kV Per
NC – No internal connection
Mil-STD-883C, Method 3015
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 process. The circuit allows the distribution of 3-V, 5-V, and/or 12-V card power by
meansofareducedI/Oserialinterface. Thecurrent-limitingfeatureeliminatestheneedforfuses, whichreduces
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
V
DD
Power Supply
TPS2202
12V
5V
12 V
5 V
AVPP
V
V
V
V
pp1
pp2
CC
PC
Card A
3V
3 V
AVCC
AVCC
AVCC
CC
3
Serial Interface
APWR_GOOD
BPWR_GOOD
OC
BVPP
V
V
V
V
pp1
pp2
CC
PCMCIA
Controller
PC
Card B
BVCC
BVCC
BVCC
CC
LinBiCMOS is a trademark of Texas Instruments Incorporated.
Copyright 1995, 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.
6–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265