7 Detailed Description

7.1 Overview

The TMP175 and TMP75 devices are digital temperature sensors that are optimal for thermal management and

thermal protection applications. The TMP175 and TMP75 are two-wire, SMBus, and I2C interface-compatible.

The devices are specified over a temperature range of −40 °C to +125 °C. The Functional Block Diagram section

shows an internal block diagram of TMP175 and TMP75 devices.

The temperature sensor in the TMP175 and TMP75 devices is the device itself. Thermal paths run through the

package leads as well as the plastic package. The package leads provide the primary thermal path because of

the lower thermal resistance of the metal.

7.2 Functional Block Diagram

Diode

Sensor

ΔΣ

ADC

OSC

Control

Logic

Serial

Interface

Config.

and Temp.

Register

Temperature

ALERT

SDA

1

3

4

8

6

5

GND

V+

A1

SCL

2

7

A0

A2

Temp.

TMP175, TMP75

SBOS288M – JANUARY 2004 – REVISED DECEMBER 2020

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8

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