DXP

DXN

V+

1

8

7

3

2

SCL

SDA

THERM

+5V

SMBus

Controller

6

GND

ALERTTHERM2

/

4

5

OneChannelLocal

OneChannelRemote

TMP431

V+

1

10

9

8

7

SCL

SDA

+5V

SMBus

Controller

6

GND

DXP1

DXN1

3

2

DXP2

DXN2

5

4

OneChannelLocal

TwoChannelsRemote

TMP432

ALERT

THERM2

/

THERM

TMP432

TMP431

TMP432

www.ti.com

SBOS441F – SEPTEMBER 2009 – REVISED AUGUST 2013

±1°C Temperature Sensor with Series-R,

η-Factor, and Automatic Beta Compensation

Check for Samples: TMP431, TMP432

1

FEATURES

DESCRIPTION

The TMP431 and TMP432 are remote temperature

234

•

±1°C REMOTE DIODE SENSOR

sensor monitors with a built-in local temperature

•

±1°C LOCAL TEMPERATURE SENSOR

sensor.

The

remote

temperature

sensor

diode-

•

AUTOMATIC BETA COMPENSATION

connected transistors are typically low-cost, NPN- or

PNP-type transistors or diodes that are an integral

•

η-FACTOR CORRECTION

part of microcontrollers, microprocessors, or FPGAs.

•

PROGRAMMABLE THRESHOLD LIMITS

Remote

accuracy

is

±1°C

for

multiple

IC

•

TWO-WIRE/ SMBus™ SERIAL INTERFACE

manufacturers, with no calibration needed. The Two-

•

MINIMUM AND MAXIMUM TEMPERATURE

Wire serial interface accepts SMBus write byte, read

MONITORS

byte, send byte, and receive byte commands to

•

MULTIPLE INTERFACE ADDRESSES

program

the

alarm

thresholds

and

to

read

•

ALERT/THERM2 PIN CONFIGURATION

The

TMP431/32

include

beta

compensation

•

DIODE FAULT DETECTION

(correction),

series

resistance

cancellation,

programmable

non-ideality

factor,

programmable

APPLICATIONS

resolution, programmable threshold limits, minimum

•

and maximum temperature monitors, wide remote

•

SERVERS

temperature measurement range (up to +150°C), and

diode fault detection and temperature alert function.

•

INDUSTRIAL CONTROLLERS

The TMP431 is available in a VSSOP-8 package and

•

CENTRAL OFFICE TELECOM EQUIPMENT

the TMP432 is available in a VSSOP-10 package.

•

DESKTOP AND NOTEBOOK COMPUTERS

•

STORAGE AREA NETWORKS (SAN)

•

INDUSTRIAL AND MEDICAL EQUIPMENT

•

PROCESSOR/FPGA TEMPERATURE

MONITORING

1

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.

2

DLP is a registered trademark of Texas Instruments.

3

SMBus is a trademark of Intel Corporation.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.