SNOSAS1B November   2010  – September 2025 LMD18200QML

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Functional Diagram
  6. 5 Absolute Maximum Ratings
  7. 6 Operating Ratings
  8. 7 Quality Conformance Inspection
  9. 8 LMD18200 Electrical Characteristics DC Parameters
  10. 9 Typical Performance Characteristics
  11. 10Test Circuit
    1. 10.1 Switching Time Definitions
  12. 11Pinout Description
    1. 11.1 Application Information
      1. 11.1.1 TYPES OF PWM SIGNALS
      2. 11.1.2 SIGNAL TRANSITION REQUIREMENTS
      3. 11.1.3 USING THE CURRENT SENSE OUTPUT
      4. 11.1.4 USING THE THERMAL WARNING FLAG
      5. 11.1.5 SUPPLY BYPASSING
      6. 11.1.6 CURRENT LIMITING
      7. 11.1.7 INTERNAL CHARGE PUMP AND USE OF BOOTSTRAP CAPACITORS
      8. 11.1.8 INTERNAL PROTECTION DIODES
    2. 11.2 Typical Applications
      1. 11.2.1 FIXED OFF-TIME CONTROL
      2. 11.2.2 TORQUE REGULATION
      3. 11.2.3 VELOCITY REGULATION
  13. 12Revision History

11.1.4 USING THE THERMAL WARNING FLAG

The THERMAL FLAG output (pin 9) is an open collector transistor. This permits a wired OR connection of thermal warning flag outputs from multiple LMD18200's, and allows the user to set the logic high level of the output signal swing to match system requirements. This output typically drives the interrupt input of a system controller. The interrupt service routine would then be designed to take appropriate steps, such as reducing load currents or initiating an orderly system shutdown. The maximum voltage compliance on the flag pin is 12V.