RGP

PW

PWP

DAP

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FEATURES

APPLICATIONS

DESCRIPTION

AUXIN

3.3VIN

1.5VIN

AUXOUT

3.3VOUT

1.5VOUT

PERST

CPPE

CPUSB

SHDN

STBY

SYSRST

OC

TPS2231

GND

RCLKEN

REFCLK+

REFCLK−

Express Card

Host

Power

Source

Host

Chip

Set/Lock

Circuits

TPS2231

TPS2236

SLVS536B – JULY 2004 – REVISED JANUARY 2005

ExpressCard™ POWER INTERFACE SWITCH

•

Available in a 20-pin TSSOP, a 20-pin QFN, or

24-pin PowerPAD™ HTSSOP (Single)

•

Meets the ExpressCard™ Standard

(ExpressCard|34 or ExpressCard|54)

•

Available in a 32-pin PowerPAD™ HTSSOP

(Dual)

•

Compliant with the ExpressCard™

Compliance Checklists

•

Fully Satisfies the ExpressCard™

•

Notebook Computers

Implementation Guidelines

•

Desktop Computers

•

Supports Systems with WAKE Function

•

Personal Digital Assistants (PDAs)

•

TTL-Logic Compatible Inputs

•

Digital Cameras

•

Short Circuit and Thermal Protection

•

TV and Set Top Boxes

•

–40

°C to 85°C Ambient Operating

Temperature Range

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.

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.

ExpressCard is a trademark of Personal Computer Memory Card International Association.

PowerPAD is a trademark of Texas Instruments.

UNLESS OTHERWISE NOTED this document contains PRO-

Copyright © 2004–2005, Texas Instruments Incorporated

DUCTION DATA information current as of publication date. Prod-

ucts conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily

include testing of all parameters.