RGP
PW
PWP
DAP
SLVS536E – JULY 2004 – REVISED SEPTEMBER 2006
www.ti.com
ExpressCard™ POWER INTERFACE SWITCH
FEATURES
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Meets the ExpressCard™ Standard
(ExpressCard|34 or ExpressCard|54)
Compliant with the ExpressCard™
Compliance Checklists
Fully Satisfies the ExpressCard™
Implementation Guidelines
Supports Systems with WAKE Function
TTL-Logic Compatible Inputs
Short Circuit and Thermal Protection
–40°C to 85°C Ambient Operating
Temperature Range
Available in a 20-pin TSSOP, a 20-pin QFN, or
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24-pin PowerPAD™ HTSSOP (Single)
Available in a 32-pin PowerPAD™ HTSSOP
(Dual)
APPLICATIONS
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Notebook Computers
Desktop Computers
Personal Digital Assistants (PDAs)
Digital Cameras
TV and Set Top Boxes
DESCRIPTION
The TPS2231 and TPS2236 ExpressCard power interface switches provide the total power management
solution required by the ExpressCard specification. The TPS2231 and TPS2236 ExpressCard power interface
switches distribute 3.3 V, AUX, and 1.5 V to the ExpressCard socket. Each voltage rail is protected with
integrated current-limiting circuitry.
The TPS2231 supports systems with single-slot ExpressCard|34 or ExpressCard|54 sockets. The TPS2236
supports systems with dual-slot ExpressCard sockets.
End equipment for the TPS2231 and TPS2236 include notebook computers, desktop computers, personal digital
assistants (PDAs), and digital cameras.
AUXIN
AUXOUT
Host
Power
Source
3.3VIN
3.3VOUT
ExpressCard Connector
1.5VIN
1.5VOUT
TPS2231
Host Connector
SHDN
STBY
Host
Chip
Set/Lock
Circuits
SYSRST
OC
GND
PERST
CPPE
CPUSB
Express Card
RCLKEN
REFCLK+
REFCLK−
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
ExpressCard is a trademark of Personal Computer Memory Card International Association.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2006, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
