SNVSC74A September   2023  – July 2024 LP5813

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Synchronous Boost Converter
        1. 6.3.1.1 Undervoltage Lockout
        2. 6.3.1.2 Enable and Soft Start
        3. 6.3.1.3 Switching Frequency
        4. 6.3.1.4 Current Limit Operation
        5. 6.3.1.5 Boost PWM Mode
        6. 6.3.1.6 Boost PFM Mode
        7. 6.3.1.7 Pass-Through Mode
      2. 6.3.2 Time-Cross-Multiplexing (TCM) Scheme
        1. 6.3.2.1 Direct drive mode
        2. 6.3.2.2 TCM Drive Mode
        3. 6.3.2.3 Mix drive mode
        4. 6.3.2.4 Ghosting Elimination
      3. 6.3.3 Analog Dimming
      4. 6.3.4 PWM Dimming
      5. 6.3.5 Autonomous Animation Engine Control
        1. 6.3.5.1 Animation Engine Pattern
        2. 6.3.5.2 Sloper
        3. 6.3.5.3 Animation Engine Unit (AEU)
        4. 6.3.5.4 Animation Pause Unit (APU)
      6. 6.3.6 Protections and Diagnostics
        1. 6.3.6.1 Overvoltage Protection
        2. 6.3.6.2 Output Short-to-Ground Protection
        3. 6.3.6.3 LED Open Detections
        4. 6.3.6.4 LED Short Detections
        5. 6.3.6.5 Thermal Shutdown
    4. 6.4 Device Functional Modes
    5. 6.5 Programming
  8. 7 Register Map Table
  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 Inductor Selection
        2. 8.2.3.2 Output Capacitor Selection
        3. 8.2.3.3 Input Capacitor Selection
        4. 8.2.3.4 Program Procedure
        5. 8.2.3.5 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

Package Options

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

8.2.1 Application

Figure 8-1 shows an example of typical application, which uses one LP5813 to drive RGB LEDs through I2C communication.

LP5813 Typical Application - LP5813 Driving RGB LEDs Figure 8-1 Typical Application - LP5813 Driving RGB LEDs

Figure 8-2 shows an example when the boost converter is not need to be used. Directly supply the power the VOUT and pull EN to low can bypass the integrated boost converter and operate the LED driver blocks.

LP5813 Typical Application - LP5813 Bypassing the Boost Converter Figure 8-2 Typical Application - LP5813 Bypassing the Boost Converter

Figure 8-3 shows the connection for 2 pcs LP5813 to drive 8 RGB LEDs (24 LEDs). One LP5813 (Device 0) can work as main part to provide boost voltage for all 8 RGB LEDs, while another LP5813 (Device 1) can work as bypassing boost converter application to save one inductor. If autonomous animation need to be performed, to avoid animation mismatch between two devices in long-time operation, 'vsync_out_en' bit in Dev_Config_11 register of one device need to be set as 1h to provide the same clock to another device.

LP5813 Typical Application - Dual LP5813 Application Example Figure 8-3 Typical Application - Dual LP5813 Application Example