SNVS796D August   2011  – October 2015 LM3556

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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power-Amplifier Synchronization (TX)
      2. 7.3.2 Input Voltage Flash Monitor (IVFM)
      3. 7.3.3 Fault Protections
        1. 7.3.3.1 Fault Operation
        2. 7.3.3.2 Flash Time-Out
        3. 7.3.3.3 Overvoltage Protection (OVP)
        4. 7.3.3.4 Current Limit
        5. 7.3.3.5 NTC Thermistor Input (TEMP)
        6. 7.3.3.6 Undervoltage Lockout (UVLO)
        7. 7.3.3.7 Thermal Shutdown (TSD)
        8. 7.3.3.8 LED and/or VOUT Fault
    4. 7.4 Device Functional Modes
      1. 7.4.1 Start-Up (Enabling The Device)
      2. 7.4.2 Pass Mode
      3. 7.4.3 Flash Mode
      4. 7.4.4 Torch Mode
      5. 7.4.5 Indicator Mode
    5. 7.5 Programming
      1. 7.5.1 I2C-Compatible Interface
        1. 7.5.1.1 Data Validity
        2. 7.5.1.2 Start and Stop Conditions
        3. 7.5.1.3 Transferring Data
        4. 7.5.1.4 I2C-Compatible Chip Address
        5. 7.5.1.5 Transferring Data
    6. 7.6 Register Maps
      1. 7.6.1 Register Descriptions
        1. 7.6.1.1  Silicon Revision and Filter Time Register (0x00)
        2. 7.6.1.2  Input Voltage Flash Monitor (IVFM) Mode Register (0x01)
        3. 7.6.1.3  NTC Settings Register (0x02)
        4. 7.6.1.4  Indicator Ramp Time Indicator (0x03)
        5. 7.6.1.5  Indicator Blinking Register (0x04)
        6. 7.6.1.6  Indicator Period Count Register (0x05)
        7. 7.6.1.7  Torch Ramp Time Register (0x06)
        8. 7.6.1.8  Configuration Register (0x07)
        9. 7.6.1.9  Flash Features Register (0x08)
        10. 7.6.1.10 Current Control Register (0x09)
        11. 7.6.1.11 Enable Register (0x0A)
          1. 7.6.1.11.1 Enable Register Mode Bits
          2. 7.6.1.11.2 Control Logic Delays
        12. 7.6.1.12 Flags Register (0x0B)
  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 Output Capacitor Selection
        2. 8.2.2.2 Input Capacitor Selection
        3. 8.2.2.3 Inductor Selection
        4. 8.2.2.4 NTC Thermistor 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 Documentation Support
      1. 11.2.1 Related Documentation
    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

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

9 Power Supply Recommendations

The LM3556 is designed to operate from an input supply range of 2.5 V to 5.5 V. This input supply must be well regulated and provide the peak current required by the LED configuration and inductor selected.