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

8.3.4.2 Sloper

Sloper is the basic element to achieve autonomous fade-in and fade-out animations. It can achieve 256 steps fade-in or fade-out effects from 'PWM_Start' to 'PWM_End' within a target time period T as Figure 8-16. The 8-bit PWM steps, which is configurable in animation pattern PWM setting registers, help to achieve extremely smooth effects. Exponential dimming curve can also be supported in the sloper.

GUID-20220622-SS0I-QWXN-GM8N-KWWSLPBT0P1K-low.svg Figure 8-16 Sloper curve demonstration

The programable time T is selectable from 0 to around 8 s with 16 levels shown in Table 8-4.

Table 8-4 Programable time options
Register value 0h 1h 2h 3h 4h 5h 6h 7h 8h 9h Ah Bh Ch Dh Eh Fh
Time (Typ.) 0 s 0.09 s 0.18 s 0.36 s 0.54 s 0.80 s 1.07 s 1.52 s 2.06 s 2.50 s 3.04 s 4.02 s 5.01 s 5.99 s 7.06 s 8.05 s