SLOSEB6E February   2025  – March 2026 LMH13000

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics for Low-Current Mode, MODE = 0
    6. 5.6 Electrical Characteristics for High-Current Mode, MODE = 1
    7. 5.7 Typical Characteristics
    8. 5.8 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Constant Current (ICC)
      2. 6.3.2 Propagation Delay With Temperature
        1. 6.3.2.1 Calibration of Propagation Delay With Temperature
        2. 6.3.2.2 Start Pulse Directly From IOUT
      3. 6.3.3 Fault Detection Mechanism
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Optical Time-of-Flight System
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Automatic Power-Control Loop Using the LMH13000
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.3 Fault Detection Mechanism

The LMH13000 incorporates comprehensive internal monitoring to make sure operation remains within safe limits. Integrated comparators continuously supervise internal reference and bias currents. Fault conditions on the VSET, RSET, or RBIAS pins that drive currents beyond established safety thresholds triggers an internal error state. Upon detection of an over-current condition, the device automatically disables the output stages to prevent thermal or electrical damage. The total time taken for the faults to be detected and the respective switches to be disconnected is approximately 1μs.”

LMH13000 Fault Detection Circuit Figure 6-4 Fault Detection Circuit
Table 6-1 Fault Detection Truth Table
Fault Description Mode End Result
VSET > 3.6V (alternatively if VSET shorted to AVDD/PVDD) OR RSET shorted to AGND 0 If the resulting IOUT > 1.8A, Error 1 is triggered. IOUT is cut off
1 If the resulting IOUT > 9A, Error 1 is triggered. IOUT is cut off
RBIAS shorted to AGND X If resulting ICC > 400mA, Error 2 is triggered. ICC is cut off