SBOS721B October   2014  – October 2024 TMP75B-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Digital Temperature Output
      2. 7.3.2 Temperature Limits and Alert
      3. 7.3.3 Serial Interface
        1. 7.3.3.1  Bus Overview
        2. 7.3.3.2  Serial Bus Address
        3. 7.3.3.3  Writing and Reading Operation
        4. 7.3.3.4  Target-Mode Operations
          1. 7.3.3.4.1 Target Receiver Mode:
          2. 7.3.3.4.2 Target Transmitter Mode:
        5. 7.3.3.5  SMBus Alert Function
        6. 7.3.3.6  General Call
        7. 7.3.3.7  High-Speed (Hs) Mode
        8. 7.3.3.8  Timeout Function
        9. 7.3.3.9  Two-Wire Timing
        10. 7.3.3.10 Two-Wire Timing Diagrams
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous-Conversion Mode
      2. 7.4.2 Shutdown Mode
      3. 7.4.3 One-Shot Mode
    5. 7.5 Programming
  9. 8 Register Map
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
    3. 9.3 Power-Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

7.1 Overview

The TMP75B-Q1 is a digital temperature sensor optimal for thermal management and thermal protection applications. The TMP75B-Q1 is two-wire and SMBus interface compatible, and is specified over a temperature range of –40°C to 125°C. The TMP75BTQDGKRQ1 is tri-temperature (–40°C, 25°C, and 125°C) tested in production for improved robustness.

The temperature sensing device for the TMP75B-Q1 is the chip. A bipolar junction transistor (BJT) inside the chip is used in a band-gap configuration to produce a voltage proportional to the chip temperature. The voltage is digitized and converted to a 12-bit temperature result in degrees Celsius, with a resolution of 0.0625°C. The package leads provide the primary thermal path because of the lower thermal resistance of the metal. Thus, the temperature result is equivalent to the local temperature of the printed circuit board (PCB) where the sensor is mounted.