SNAS651A January   2015  – September 2018 TPL5010

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Application Schematic
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Ratings
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 WAKE
      2. 8.3.2 DONE
      3. 8.3.3 RSTn
    4. 8.4 Device Functional Modes
      1. 8.4.1 Start-Up
      2. 8.4.2 Normal Operating Mode
    5. 8.5 Programming
      1. 8.5.1 Configuring the WAKE Interval With the DELAY/M_RST Pin
      2. 8.5.2 Manual Reset
        1. 8.5.2.1 DELAY/M_RST
        2. 8.5.2.2 Circuitry
      3. 8.5.3 Timer Interval Selection Using External Resistance
      4. 8.5.4 Quantization Error
      5. 8.5.5 Error Due to Real External Resistance
  9. 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
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.2.2 Detailed Design Procedure

When the main constraint is the battery life, the selection of a low power voltage reference, the µC, and the display is mandatory. The first step in the design is the calculation of the power consumption of the devices in their different mode of operations. For instance, the LMP91000 burns most of the power when in gas measurement mode, then, according to the connected gas sensor, it has two idle states (standby and deep sleep). The same is true for the µC, such as one of the MSP430 family, which can be placed in one of its lower power modes, such as LMP3.5 or LMP4.5. In this case, the TPL5010 can be used to implement the watchdog and wake-up timing functions.

After the power budget calculation, it is possible to select the appropriate time interval which satisfies the application constraints and maximize the life of the battery.