SNVSCQ1B March   2025  – September 2026 LP5816

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 Protections
        1. 7.3.4.1 UVLO
        2. 7.3.4.2 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 Shutdown Mode
      4. 7.4.4 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

7.4.3 Shutdown Mode

The LP5816 supports shutdown mode to minimize the power consumption from VCC. The quiescent current from VCC decreases to 0.1μA (typical) in SHUTDOWN mode. The LP5816 provides two pairs of methods to control the device enter and exit SHUTDOWN mode.

  • Figure 7-5 shows the method 1
    • Enter shutdown, send Shutdown_command by writing 0x33 to register 0xD though I2C communication.
    • Exit shutdown, toggle SDA 8 times to generate 8 falling edges while keeping SCL as high. The supported maximum toggle frequency for SDA is 100kHz.
  • Figure 7-6 shows the method 2
    • Enter shutdown, pull down SCL for 100ms while keeping SDA as high.
    • Exit shutdown, pull up SCL to generate one rising edge regardless of SDA state.


LP5816 Enter and Exit Shutdown Mode Method Pair 1

Figure 7-5 Enter and Exit Shutdown Mode Method Pair 1

LP5816 Enter and Exit Shutdown Mode Method Pair 2

Figure 7-6 Enter and Exit Shutdown Mode Method Pair 2