SNVSA21H May   2014  – April 2025 LP8860-Q1

PRODUCTION DATA  

1.   1
2. 1 Features
3. 2 Applications
4. 3 Description
5.   Device Comparison Table
6. 4 Pin Configuration and Functions
   1.     Pin Functions
7. 5 Specifications
   1. 5.1  Absolute Maximum Ratings
   2. 5.2  ESD Ratings
   3. 5.3  Recommended Operating Conditions
   4. 5.4  Thermal Information
   5. 5.5  Electrical Characteristics
   6. 5.6  Current Sinks Electrical Characteristics
   7. 5.7  Boost Converter Characteristics
   8. 5.8  Logic Interface Characteristics
   9. 5.9  VIN Undervoltage Protection (VIN_UVLO)
   10. 5.10 VDD Undervoltage Protection (VDD_UVLO)
   11. 5.11 VIN Overvoltage Protection (VIN_OVP)
   12. 5.12 VIN Overcurrent Protection (VIN_OCP)
   13. 5.13 Power-Line FET Control Electrical Characteristics
   14. 5.14 External Temp Sensor Control Electrical Characteristics
   15. 5.15 I2C Serial Bus Timing Parameters (SDA, SCLK)
   16. 5.16 SPI Timing Requirements
   17. 5.17 Typical Characteristics
8. 6 Detailed Description
   1. 6.1 Overview
      1. 6.1.1 Boost Controller
      2. 6.1.2 LED Output Configurations
      3. 6.1.3 Display Mode
      4. 6.1.4 Cluster Mode
      5. 6.1.5 Hybrid Dimming
      6. 6.1.6 Charge Pump and Square Waveform (SQW) Output
      7. 6.1.7 Power-Line FET
      8. 6.1.8 Protection Features
      9. 6.1.9 Advanced Thermal Protection Features
   2. 6.2 Functional Block Diagram
   3. 6.3 Feature Description
      1. 6.3.1 Clock Generation
         1. 6.3.1.1 LED PWM Clock Generation With VSYNC
         2. 6.3.1.2 LED PWM Frequency and Resolution
      2. 6.3.2 Brightness Control (Display Mode)
         1. 6.3.2.1 PWM Input Duty Cycle Based Control
         2. 6.3.2.2 Brightness Register Control
         3. 6.3.2.3 PWM Input Duty × Brightness Register
         4. 6.3.2.4 PWM-Input Direct Control
         5. 6.3.2.5 Brightness Slope
         6. 6.3.2.6 LED Dimming Methods
         7. 6.3.2.7 PWM Calculation Data Flow for Display Mode
      3. 6.3.3 LED Output Modes and Phase Shift PWM (PSPWM) Scheme
      4. 6.3.4 LED Current Setting
      5. 6.3.5 Cluster Mode
      6. 6.3.6 Boost Controller
      7. 6.3.7 Charge Pump
      8. 6.3.8 Powerline Control FET
      9. 6.3.9 Protection and Fault Detection Modes
         1. 6.3.9.1 LED Fault Comparators and Adaptive Boost Control
         2. 6.3.9.2 LED Current Dimming With Internal Temperature Sensor
         3. 6.3.9.3 LED Current Limitation With External NTC Sensor
         4. 6.3.9.4 LED Current Dimming With External NTC Sensor
         5. 6.3.9.5 Protection Feature and Fault Summary
   4. 6.4 Device Functional Modes
      1. 6.4.1 Standby Mode
      2. 6.4.2 Active Mode
      3. 6.4.3 Fault Recovery State
      4. 6.4.4 Start-Up and Shutdown Sequences
   5. 6.5 Programming
      1. 6.5.1 EEPROM
      2. 6.5.2 Serial Interface
         1. 6.5.2.1 SPI Interface
         2. 6.5.2.2 I2C Serial Bus Interface
            1. 6.5.2.2.1 Interface Bus Overview
            2. 6.5.2.2.2 Data Transactions
            3. 6.5.2.2.3 Acknowledge Cycle
            4. 6.5.2.2.4 Acknowledge After Every Byte Rule
            5. 6.5.2.2.5 Addressing Transfer Formats
            6. 6.5.2.2.6 Control Register Write Cycle
            7. 6.5.2.2.7 Control Register Read Cycle
   6. 6.6 Register Maps
      1. 6.6.1 Register Bit Explanations
         1. 6.6.1.1  Display/Cluster1 Brightness Control MSB
         2. 6.6.1.2  Display/Cluster1 Brightness Control LSB
         3. 6.6.1.3  Display/Cluster1 Output Current MSB
         4. 6.6.1.4  Display/Cluster1 Output Current LSB
         5. 6.6.1.5  Cluster2 Brightness Control MSB
         6. 6.6.1.6  Cluster2 Brightness Control LSB
         7. 6.6.1.7  Cluster2 Output Current
         8. 6.6.1.8  Cluster3 Brightness Control MSB
         9. 6.6.1.9  Cluster3 Brightness Control LSB
         10. 6.6.1.10 Cluster3 Output Current
         11. 6.6.1.11 Cluster4 Brightness Control MSB
         12. 6.6.1.12 Cluster4 Brightness Control LSB
         13. 6.6.1.13 Cluster4 Output Current
         14. 6.6.1.14 Configuration
         15. 6.6.1.15 Status
         16. 6.6.1.16 Fault
         17. 6.6.1.17 LED Fault
         18. 6.6.1.18 Fault Clear
         19. 6.6.1.19 Identification
         20. 6.6.1.20 Temp MSB
         21. 6.6.1.21 Temp LSB
         22. 6.6.1.22 Display LED Current MSB
         23. 6.6.1.23 Display LED Current LSB
         24. 6.6.1.24 Display LED PWM MSB
         25. 6.6.1.25 Display LED PWM LSB
         26. 6.6.1.26 EEPROM Control
         27. 6.6.1.27 EEPROM Unlock Code
      2. 6.6.2 EEPROM Bit Explanations
         1. 6.6.2.1  EEPROM Register 0
         2. 6.6.2.2  EEPROM Register 1
         3. 6.6.2.3  EEPROM Register 2
         4. 6.6.2.4  EEPROM Register 3
         5. 6.6.2.5  EEPROM Register 4
         6. 6.6.2.6  EEPROM Register 5
         7. 6.6.2.7  EEPROM Register 6
         8. 6.6.2.8  EEPROM Register 7
         9. 6.6.2.9  EEPROM Register 8
         10. 6.6.2.10 EEPROM Register 9
         11. 6.6.2.11 EEPROM Register 10
         12. 6.6.2.12 EEPROM Register 11
         13. 6.6.2.13 EEPROM Register 12
         14. 6.6.2.14 EEPROM Register 13
         15. 6.6.2.15 EEPROM Register 14
         16. 6.6.2.16 EEPROM Register 15
         17. 6.6.2.17 EEPROM Register 16
         18. 6.6.2.18 EEPROM Register 17
         19. 6.6.2.19 EEPROM Register 18
         20. 6.6.2.20 EEPROM Register 19
         21. 6.6.2.21 EEPROM Register 20
         22. 6.6.2.22 EEPROM Register 21
         23. 6.6.2.23 EEPROM Register 22
         24. 6.6.2.24 EEPROM Register 23
         25. 6.6.2.25 EEPROM Register 24
9. 7 Application and Implementation
   1. 7.1 Application Information
   2. 7.2 Typical Applications
      1. 7.2.1 Typical Application for Display Backlight
         1. 7.2.1.1 Design Requirements
         2. 7.2.1.2 Detailed Design Procedure
            1. 7.2.1.2.1  Inductor Selection
            2. 7.2.1.2.2  Output Capacitor Selection
            3. 7.2.1.2.3  Input Capacitor Selection
            4. 7.2.1.2.4  Charge Pump Output Capacitor
            5. 7.2.1.2.5  Charge Pump Flying Capacitor
            6. 7.2.1.2.6  Diode
            7. 7.2.1.2.7  Boost Converter Transistor
            8. 7.2.1.2.8  Boost Sense Resistor
            9. 7.2.1.2.9  Power Line Transistor
            10. 7.2.1.2.10 Input Current Sense Resistor
            11. 7.2.1.2.11 Filter Component Values
                1. 7.2.1.2.11.1 Critical Components for Design
         3. 7.2.1.3 Application Performance Plots
      2. 7.2.2 Low VDD Voltage and Combined Output Mode Application
         1. 7.2.2.1 Design Requirements
         2. 7.2.2.2 Detailed Design Procedure
         3. 7.2.2.3 Application Performance Plots
      3. 7.2.3 High Output Voltage Application
         1. 7.2.3.1 Design Requirements
         2. 7.2.3.2 Detailed Design Procedure
         3. 7.2.3.3 Application Performance Plots
      4. 7.2.4 High Output Current Application
         1. 7.2.4.1 Design Requirements
         2. 7.2.4.2 Detailed Design Procedure
         3. 7.2.4.3 Application Performance Plots
      5. 7.2.5 Three-Channel Configuration Without Serial Interface
         1. 7.2.5.1 Design Requirements
         2. 7.2.5.2 Detailed Design Procedure
         3. 7.2.5.3 Application Performance Plots
      6. 7.2.6 Solution With Minimum External Components
         1. 7.2.6.1 Design Requirements
   3. 7.3 Power Supply Recommendations
   4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
10. 8 Device and Documentation Support
    1. 8.1 Device Support
    2. 8.2 Documentation Support
       1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Community Resources
    5. 8.5 Trademarks
11. 9 Revision History
12. 10Mechanical, Packaging, and Orderable Information

LP8860-Q1 Low-EMI Automotive LED Driver with Four 150mA Channels