SLVSA85E June   2010  – December 2016

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
      1. 6.6.1 Table Of Graphs
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Supply Voltage
      2. 7.3.2 Boost Regulator and Programmable Switch Frequency (FSCLT)
      3. 7.3.3 LED Current Sinks
      4. 7.3.4 Enable and Start-up
      5. 7.3.5 IFB Pin Unused
    4. 7.4 Device Functional Modes
      1. 7.4.1 Brightness Dimming Control
      2. 7.4.2 Adjustable PWM Dimming Frequency and Mode Selection (R_FPWM/MODE)
      3. 7.4.3 Mode Selection - Phase-Shift PWM Or Direct PWM Dimming
        1. 7.4.3.1 Phase-Shift PWM Dimming
        2. 7.4.3.2 Direct PWM Dimming
      4. 7.4.4 Overvoltage Clamp and Voltage Feedback (OVC / FB)
      5. 7.4.5 Current-Sink Open Protection
      6. 7.4.6 Overcurrent and Short-Circuit Protection
      7. 7.4.7 Thermal Protection
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Inductor Selection
        2. 8.2.2.2 Output Capacitor Selection
        3. 8.2.2.3 Isolation FET Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

4 Revision History

Changes from D Revision (February 2012) to E Revision

  • Added Device Information and Pin Configuration and Functions sections, ESD Ratings and Thermal Information tables, Feature Description, Device Functional Modes, Application and Implementation, Power Supply Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable Information sectionsGo
  • Deleted Ordering table - information in POA Go
  • Added last 2 sentences of IFB Pin Unused Go

Changes from C Revision (September 2011) to D Revision

Changes from B Revision (April 2011) to C Revision

  • Added a description paragraph and replaced Figure 15 in the PHASE SHIFT PWM DIMMING sectionGo

Changes from A Revision (July 2010) to B Revision

  • Changed in ABS MAX table, in row "All other pins", MAX col: from 3.6 to 3.7Go

Changes from * Revision (June 2010) to A Revision

  • Changed Typical Application graphicGo
  • Changed ceramic capacitor value, attached to VDDIO, from 0.1 to 1 µFGo
  • Changed bypass capacitor value in SUPPLY VOLTAGE section from 0.1 to 1 µF.Go
  • Changed BRIGHTNESS DIMMING CONTROL sectionGo
  • Deleted PWM BRIGHTNESS CONTROL INTERFACE sectionGo