ZHCSKH3 November   2019 TMP392

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     简化原理图
  4. 修订历史记录
  5. Pin Configuration and Functions
    1.     Pin Functions
  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 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 TMP392 Programming Tables
      2. 7.3.2 Trip Test
      3. 7.3.3 20°C Hysteresis
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Applications Information
    2. 8.2 Typical Applications
      1. 8.2.1 Simplified Application Schematic
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 TMP392 With 10°C Hysteresis
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 One Channel Operation for Hot Trip Point up to 124°C
        1. 8.2.3.1 Application Curve
      4. 8.2.4 One Channel Operation for Warm Trip Point from 30°C up to 105°C
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

Detailed Design Procedure

The resistor to ground values on the SETA input sets the TTRIP threshold of Channel A. The resistor to ground value on the SETB input sets the TTRIP threshold of Channel B—as well as the THYST 5°C and 10°C options. TI recommends that the resistors at SETA and SETB have a 1% tolerance at room temperature. Each resistor can range from 1.05 KΩ to 909 KΩ, representing one of 48 unique values. The exact temperature thresholds and trip points are shown in Table 1 and Table 2. The pullup resistors should be at least 1 kΩ to minimize internal power dissipation. To get the correct threshold for resistor values, take care to minimize the board level capacitance and leakage at the SETA and SETB pins.

The waveform for the TMP392 output for hot/warm thresholds is shown in Figure 10. The hysteresis can be set to 5°C, 10°C, or 20°C. When the temperature exceeds the hot trip point threshold, OUTA goes low until the temperature drops below the hysteresis threshold. When the temperature exceeds the warm trip threshold, OUTB goes low and returns high after the temperature drops below the hysteresis threshold. If the switch has already tripped and the temperature is in the hysteresis band, a POR event will cause the output to go high after the power is restored.