SNVS673E April   2010  – September 2014 LP8551

PRODUCTION DATA.  

1. 1 Features
2. 2 Applications
3. 3 Description
4. 4 Revision History
5. 5 Device Default Values
6. 6 Pin Configuration and Functions
7. 7 Specifications
   1. 7.1  Absolute Maximum Ratings
   2. 7.2  Handling Ratings
   3. 7.3  Recommended Operating Conditions
   4. 7.4  Thermal Information
   5. 7.5  Electrical Characteristics
   6. 7.6  Boost Converter Electrical Characteristics
   7. 7.7  LED Driver Electrical Characteristics
   8. 7.8  PWM Interface Characteristics
   9. 7.9  Undervoltage Protection
   10. 7.10 Logic Interface Characteristics
   11. 7.11 I2C Serial Bus Timing Parameters (SDA, SCLK)
   12. 7.12 Typical Characteristics
8. 8 Detailed Description
   1. 8.1 Overview
   2. 8.2 Functional Block Diagram
   3. 8.3 Feature Description
      1. 8.3.1 Clock Generation
      2. 8.3.2 Brightness Control Methods
         1. 8.3.2.1  PWM Input Duty Cycle
         2. 8.3.2.2  Brightness Register Control
         3. 8.3.2.3  PWM Direct Control
         4. 8.3.2.4  PWM Calculation Data Flow
         5. 8.3.2.5  PWM Detector
         6. 8.3.2.6  Brightness Control
         7. 8.3.2.7  Resolution Selector
         8. 8.3.2.8  Sloper
         9. 8.3.2.9  PWM Comparator
         10. 8.3.2.10 Current Setting
         11. 8.3.2.11 PWM Frequency Setting
         12. 8.3.2.12 Phase Shift PWM (PSPWM) Scheme
         13. 8.3.2.13 Slope
         14. 8.3.2.14 Driver Headroom Control
      3. 8.3.3 Boost Converter
         1. 8.3.3.1 Operation
         2. 8.3.3.2 Protection
         3. 8.3.3.3 Manual Output Voltage Control
         4. 8.3.3.4 Adaptive Boost Control
      4. 8.3.4 Fault Detection
         1. 8.3.4.1 LED Fault Detection
         2. 8.3.4.2 Undervoltage Detection
         3. 8.3.4.3 Overcurrent Protection
         4. 8.3.4.4 Device Thermal Regulation
         5. 8.3.4.5 Thermal Shutdown
   4. 8.4 Device Functional Modes
      1. 8.4.1 Modes of Operation
   5. 8.5 Programming
      1. 8.5.1 I2C-Compatible Serial Bus Interface
         1. 8.5.1.1 Interface Bus Overview
         2. 8.5.1.2 Data Transactions
         3. 8.5.1.3 Acknowledge Cycle
         4. 8.5.1.4 “Acknowledge After Every Byte” Rule
         5. 8.5.1.5 Addressing Transfer Formats
         6. 8.5.1.6 Control Register Write Cycle
         7. 8.5.1.7 Control Register Read Cycle
         8. 8.5.1.8 Register Read and Write Detail
      2. 8.5.2 EEPROM
   6. 8.6 Register Map
      1. 8.6.1 Register Bit Explanations
         1. 8.6.1.1 Brightness Control
         2. 8.6.1.2 Device Control
         3. 8.6.1.3 Fault
         4. 8.6.1.4 Identification
         5. 8.6.1.5 Direct Control
         6. 8.6.1.6 Temp MSB
         7. 8.6.1.7 Temp LSB
         8. 8.6.1.8 EEPROM Control
      2. 8.6.2 EEPROM Bit Explanations
         1. 8.6.2.1 EEPROM Register Map
         2. 8.6.2.2 EEPROM Address 0
         3. 8.6.2.3 EEPROM Address 1
         4. 8.6.2.4 EEPROM Address 2
         5. 8.6.2.5 EEPROM Address 3
         6. 8.6.2.6 EEPROM Address 4
         7. 8.6.2.7 EEPROM Address 5
         8. 8.6.2.8 EEPROM Address 7
9. 9 Application and Implementation
   1. 9.1 Application Information
   2. 9.2 Typical Applications
      1. 9.2.1 Application Using Internal LDO
         1. 9.2.1.1 Design Requirements
         2. 9.2.1.2 Detailed Design Procedure
            1. 9.2.1.2.1 Recommended External Components
               1. 9.2.1.2.1.1 Inductor Selection
               2. 9.2.1.2.1.2 Output Capacitor
               3. 9.2.1.2.1.3 LDO Capacitor
               4. 9.2.1.2.1.4 Output Diode
         3. 9.2.1.3 Application Curves
      2. 9.2.2 Application with Low-Input Voltage
         1. 9.2.2.1 Design Requirements
         2. 9.2.2.2 Detailed Design Procedure
         3. 9.2.2.3 Application Curves
10. 10Power Supply Recommendations
11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
13. 13Mechanical, Packaging, and Orderable Information