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

Product

Folder

Sample &

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Technical

Documents

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Software

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TMP431, TMP432

SBOS441G – SEPTEMBER 2009 – REVISED DECEMBER 2015

TMP43x ±1°C Temperature Sensor With Series-R,

η-Factor, and Automatic Beta Compensation

1 Features

3 Description

The TMP431 and TMP432 are remote temperature

1

•

±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 Monitors

Wire serial interface accepts SMBus write byte, read

•

Multiple Interface Addresses

byte, send byte, and receive byte commands to

program

the

alarm

thresholds

and

to

read

•

ALERT/THERM2 Pin Configuration

temperature data.

•

Diode Fault Detection

The TMP43x include beta compensation (correction),

2 Applications

series resistance cancellation, programmable non-

ideality

factor,

programmable

resolution,

•

programmable

threshold

limits,

minimum

and

•

Servers

maximum

temperature

monitors,

wide

remote

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

•

Industrial Controllers

diode fault detection and temperature alert function.

•

Central Office Telecom Equipment

The TMP431 is available in a VSSOP-8 package and

•

Desktop and Notebook Computers

the TMP432 is available in a VSSOP-10 package.

•

Storage Area Networks (SAN)

•

Industrial And Medical Equipment

Device Information(1)

•

Processor and FPGA Temperature Monitoring

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP431

VSSOP (8)

3.00 mm × 3.00 mm

TMP432

VSSOP (10)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application Schematics

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.