SLVS790E November   2007  – April 2019 TPS61165

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
  4. 4 Revision History
  5. 5 Device Options
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 Thermal Information
    4. 7.4 Electrical Characteristics
    5. 7.5 Timing Requirements
    6. 7.6 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 Soft Start-Up
      2. 8.3.2 Open LED Protection
      3. 8.3.3 Undervoltage Lockout
      4. 8.3.4 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Maximum Output Current
      2. 9.1.2 Inductor Selection
      3. 9.1.3 Schottky Diode Selection
      4. 9.1.4 Compensation Capacitor Selection
      5. 9.1.5 Input and Output Capacitor Selection
    2. 9.2 Typical Applications
      1. 9.2.1 TPS61165 Typical Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 LED Brightness Dimming Mode Selection
          2. 9.2.1.2.2 PWM Brightness Dimming
          3. 9.2.1.2.3 Digital One-Wire Brightness Dimming
          4. 9.2.1.2.4 EasyScale: One-Wire Digital Dimming
          5. 9.2.1.2.5 Current Program
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Additional Application Circuits
    3. 9.3 Do's and Don'ts
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.2 Open LED Protection

Open LED protection circuitry prevents device damage as the result of white LED disconnection. The TPS61165 monitors the voltage at the SW pin and FB pin during each switching cycle. The circuitry turns off the switch FET and shuts down the device when both of the following conditions persist for 8 switching clock cycles: (1) the SW voltage exceeds the VOVP threshold, and (2) the FB voltage is less than half of regulation voltage. As a result, the output voltage falls to the level of the input supply. The device remains in shutdown mode until it is enabled by toggling the CTRL pin. The product of the number of external series LEDs and the maximum forward voltage of each LED plus the 200-mV reference voltage does not exceed the 38-V minimum OVP threshold (NLEDS × VLED(MAX)) + 200 mV ≤ 38 V.