TMP431 datasheet(32/47 Pages) TI1

32 / 47 page

(2) The total series resistance (R

+ R ) should be < 1 k

. This resistance is optional.

0.1mF

10kW

(typ)

10kW

(typ)

10kW

(typ)

10kW

(typ)

TMP431

DXP

DXN

V+

(2)

(3)

DIFF

(3)

DIFF

(2)

GND

SCL

SDA

ALERT THERM2

THERM

+5V

SMBus

Controller

Fan Controller

Diode-connected configuration :

(1)

Series Resistance

GND collector-connected transistor configuration :

(1)

(1) Diode-connected configuration provides better settling time.

GND collector-connected transistor configuration provides better series resistance cancellation.

(3) C

should be < 2200pF. Selection of C

depends on specific application;

DIFF

see Filtering section and Figure 9, Remote Temperature Error vs Differential Capacitance.

NOTES:

TMP431, TMP432

SBOS441G – SEPTEMBER 2009 – REVISED DECEMBER 2015

www.ti.com

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The TMP43x devices require only a transistor connected between the DXP and DXN pins for remote temperature

measurement. Tie the DXP pin to GND if the remote channel is not used and only the local temperature is

measured. The SDA, ALERT, and THERM pins (and SCL, if driven by an open-drain output) require pullup

resistors as part of the communication bus. TI recommends a 0.1-µF power-supply decoupling capacitor for local

bypassing. See Figure 20 for a typical configuration of the TMP431; see Figure 21 for a typical configuration of

the TMP432.

9.2 Typical Application

Figure 20. TMP431 Basic Connections

Submit Documentation Feedback

Product Folder Links: TMP431 TMP432

TMP431 Datasheet(PDF) 32 Page - Texas Instruments

TMP431 Datasheet(HTML) 32 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Datasheet Download

Link URL