SLVSB70B October   2013  – July 2018 TPS62085 , TPS62086 , TPS62087

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Typical Application Schematic
    1.     Typical Application Efficiency
  5. Revision History
  6. Device Options
  7. Pin Configuration and Functions
    1.     Pin Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Power Save Mode
      2. 9.3.2 100% Duty Cycle Low Dropout Operation
      3. 9.3.3 Soft Start
      4. 9.3.4 Switch Current Limit and Hiccup Short-Circuit Protection
      5. 9.3.5 Undervoltage Lockout
      6. 9.3.6 Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable and Disable
      2. 9.4.2 Power Good
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Custom Design With WEBENCH® Tools
        2. 10.2.2.2 Setting The Output Voltage
        3. 10.2.2.3 Output Filter Design
        4. 10.2.2.4 Inductor Selection
        5. 10.2.2.5 Capacitor Selection
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
      2. 13.1.2 Custom Design With WEBENCH® Tools
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Related Links
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

Setting The Output Voltage

The output voltage is set by an external resistor divider according to Equation 3:

Equation 3. TPS62085 TPS62086 TPS62087 EQ1_VS.gif

R2 must not be higher than 180 kΩ to achieve high efficiency at light load while providing acceptable noise sensitivity. Lowest operating quiescent current and best output voltage accuracy are achieved with the fixed output voltage versions. For the fixed output voltage versions, the FB pin must be connected to the output.