DXP

DXN

SCL

SDA

THERM

GND

V+

ALERT / THERM2

Processor or

ASIC

SMBus

Controller

1

2

3

4

5

8

7

6

TMP451-Q1

1.7V to 3.6V

1.7V to 3.6V

Built-in Thermal

Transistor/Diode

Overtemperature Shutdown

Product

Folder

Sample &

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TMP451-Q1

SLOS877 – OCTOBER 2014

TMP451-Q1 ±1°C Remote and Local Temperature Sensor with

η-Factor and Offset

Correction, Series-Resistance Cancellation, and Programmable Digital Filter

1 Features

3 Description

The TMP451-Q1 device is a high-accuracy, low-

1

•

Qualified for Automotive Applications

power remote temperature sensor monitor with a

•

AEC-Q100 Qualified With the Following Results:

built-in

local

temperature

sensor.

The

remote

–

Device Temperature Grade 1: –40°C to 125°C

temperature sensors are typically low-cost discrete

Ambient Operating Temperature Range

NPN

or

PNP

transistors,

or

substrate

thermal

transistors or diodes that are integral parts of

–

Device HBM ESD Classification Level 2

microprocessors, microcontrollers, or FPGAs. The

–

Device CDM ESD Classification Level C4B

temperature is represented as a 12-bit digital code for

•

±1°C Accuracy for Local and Remote Diode

both the local and the remote sensors, giving a

Sensors

resolution of 0.0625°C. The temperature accuracy is

±1°C (maximum) in the typical operating range for the

•

0.0625°C Resolution for Local and Remote

local and the remote temperature sensors. The two-

Channels

wire

serial

interface

accepts

the

SMBus

•

1.7-V to 3.6-V Supply and Logic Voltage Range

communication protocol.

•

27-µA Operating Current, 3-µA Shutdown Current

Advanced

features

such

as

series

resistance

•

Series Resistance Cancellation

cancellation, programmable nonideality factor (

η-

•

η-Factor and Offset Correction

factor),

programmable

offset,

programmable

temperature limits, and a programmable digital filter

•

Programmable Digital Filter

are combined to provide a robust thermal monitoring

•

Diode Fault Detection

solution with improved accuracy and noise immunity.

•

Two-Wire and SMBus™ Serial Interface

The TMP451-Q1 device is ideal for multi-location,

•

8-Lead WSON (WDFN) Package

high-accuracy

temperature

measurements

in

a

variety of automotive sub-systems. The device is

2 Applications

specified for operation over a supply voltage range of

1.7 V to 3.6 V and a temperature range of –40°C to

•

Automotive Infotainment Systems

125°C.

•

ECU Processor Temperature Monitoring

•

TCM Processor Temperature Monitoring

Device Information(1)

•

BCM Processor Temperature Monitoring

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP451-Q1

WSON (8)

2.00 mm × 2.00 mm

•

LED Headlight Thermal Control

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

the end of the datasheet.

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.