SNVSCC9 November   2023 LP5812

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
  8. 7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Time-cross-multiplexing (TCM) scheme
        1. 8.3.1.1 Direct drive mode
        2. 8.3.1.2 TCM drive mode
        3. 8.3.1.3 Mix drive mode
        4. 8.3.1.4 Ghosting elimination
      2. 8.3.2 Analog Dimming
      3. 8.3.3 PWM Dimming
      4. 8.3.4 Autonomous Animation Engine Control
        1. 8.3.4.1 Animation Engine Pattern
        2. 8.3.4.2 Sloper
        3. 8.3.4.3 Animation Engine Unit (AEU)
        4. 8.3.4.4 Animation Pause Unit (APU)
      5. 8.3.5 Protections and Diagnostics
        1. 8.3.5.1 LED Open Detections
        2. 8.3.5.2 LED Short Detections
        3. 8.3.5.3 Thermal Shutdown
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
    6. 8.6 Register Maps
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Application
      2. 9.2.2 Design Parameters
      3. 9.2.3 Detailed Design Procedure
        1. 9.2.3.1 Input Capacitor Selection
        2. 9.2.3.2 Program Procedure
        3. 9.2.3.3 Programming Example
      4. 9.2.4 Application Performance Plots
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YBH|9
  • DSD|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.4.3 Animation Engine Unit (AEU)

The AEU is the most important unit to achieve autonomous animation effects. One AEU is formed by 4 slopers. There are 5 PWM values and 4 time values can be configured in the AEU. Each PWMx (x = 1, 2,…, 5) can be arbitrarily programmed from 0 to 255, The Tx ( x = 1, 2, 3, 4) is selectable from 0 to 8 s with 16 levels referring to Table 8-4. If two adjacent PWM values are equal, the brightness keeps unchange within the time setting. When a Tx is set to 0, this sloper is skipped. To avoid flicker happens due to PWM value suddenly changes, the begin and end PWM of this sloper need to be the same.

Typical breathing effect example is illustrated as Figure 8-17.

GUID-20220622-SS0I-XDRG-R4V9-4ZCSPMCDWBSP-low.svg Figure 8-17 Animation engine unit - Example 1

Advanced breathing effect example is shown in Figure 8-18. 2 different fading speeds are set in the PWM rising and falling phases, to achieve a complex animation.

GUID-20220622-SS0I-9T9N-BK1J-JZNW0CZRXJ33-low.svg Figure 8-18 Animation engine unit - Example 2