SNVSCP2A March   2025  – August 2025 LP5815

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 Timing Diagrams
    8. 6.8 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 Analog Dimming
      2. 7.3.2 PWM Dimming
      3. 7.3.3 Sloper
      4. 7.3.4 Autonomous Animation Control
        1. 7.3.4.1 Animation Engine Unit
        2. 7.3.4.2 Animation Pattern Unit
        3. 7.3.4.3 Animation Control
      5. 7.3.5 Instant Blinking
      6. 7.3.6 Protections
        1. 7.3.6.1 UVLO
        2. 7.3.6.2 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Initialization Mode
      2. 7.4.2 Standby and Normal Mode
      3. 7.4.3 Instant Blinking Mode
      4. 7.4.4 Shutdown Mode
      5. 7.4.5 Thermal Shutdown Mode
    5. 7.5 Programming
      1. 7.5.1 I2C Data Tansactions
      2. 7.5.2 I2C Data Format
      3. 7.5.3 Command Description
    6. 7.6 Register Maps
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Application
      2. 8.2.2 Design Parameters
      3. 8.2.3 Detailed Design Procedure
        1. 8.2.3.1 Program Procedure
        2. 8.2.3.2 Programming Example
      4. 8.2.4 Application Performance Plots
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.5.3 Command Description

The LP5815 has 5 dedicated software commands, Shutdown_command, Reset_command, Update_command, Start_command and Stop_command. Besides the 5 software commands, there is another PAUSE_CONTINUE bit used to control the execution of the autonomous animation.

  • Send Shutdown_command is one of the 2 methods to make the device enter SHUTDOWN mode as described in Shutdown Mode. In INSTANT BLINKING mode, the LP5815 does not respond to the Shutdown_command.
  • Send Reset_command to reset all registers to default value. In INSTANT BLINKING mode, the LP5815 does not respond to the Reset_command.
  • Send Update_command to make the modified value in the device configuration registers as shown in Table 7-6 to take effect. The LP5815 responds to the Update_command only when CHIP_EN = 1 and not in INSTANT BLINKING mode.
  • Send Start_command to start running the configured autonomous animation patterns on the outputs. The LP5815 responds to the Start_command only when CHIP_EN = 1 and not in INSTANT BLINKING mode.
  • Send Stop_command to stop running the configured autonomous animation patterns on the outputs. The LP5815 responds to the Stop_command only when CHIP_EN = 1 and not in INSTANT BLINKING mode.
  • Set PAUSE_CONTINUE bit as 1 to pause the running of the configured autonomous animation patterns on the outputs. Clear PAUSE_CONTINUE bit as 0 to continue the running of the previous paused autonomous animation patterns on the outputs. When the PAUSE_CONTINUE = 1, the configured autonomous animation pattern is not started after Start_command is sent.

Table 7-6 Update_command Control Registers
Register Address Register Acronym
0x01 to 0x05 DEV_CONGIFx, x = 0, 1, 2, 3, 4