TPS2202 Datasheet, PDF (1/21 Pages) Texas Instruments – DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES FOR SERIAL PCMCIA CONTROLLERS

TPS2202, TPS2202Y
DUAL-SLOT PC CARD POWER-INTERFACE SWITCHES
FOR SERIAL PCMCIA CONTROLLERS
SLVS103A – DECEMBER 1994 – REVISED AUGUST 1995
• 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) – 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 µA Typ, I_Q = 1 µA
• Low r_DS(on) (160-mΩ V_CC Switch)
• Break-Before-Make Switching
• ESD Protection Up to 2 kV Per
Mil-STD-883C, Method 3015
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
AVCC
GND
APWR_GOOD
NC
3V
DB OR DF PACKAGE
(TOP VIEW)
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11
20
12
19
13
18
14
17
15
16
5V
NC
NC
NC
NC
V_DD
12V
BVPP
BVCC
BVCC
BVCC
BPWR_GOOD
OC
3V
3V
NC – 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™ 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
Power Supply
12 V
5V
3V
3
PCMCIA
Controller
VDD
TPS2202
12V
AVPP
5V
3V
AVCC
AVCC
AVCC
Serial Interface
APWR_GOOD
BPWR_GOOD
OC
BVPP
BVCC
BVCC
BVCC
Vpp1
Vpp2
VCC
VCC
PC
Card A
Vpp1
Vpp2
VCC
VCC
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1995, Texas Instruments Incorporated
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