SLVSD38C November   2015  – August 2021 TPS61089

PRODMIX  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    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 Undervoltage Lockout (UVLO)
      2. 8.3.2 Enable and Disable
      3. 8.3.3 Soft Start
      4. 8.3.4 Adjustable Switching Frequency
      5. 8.3.5 Adjustable Peak Current Limit
      6. 8.3.6 Overvoltage Protection
      7. 8.3.7 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation
        1. 8.4.1.1 Forced PWM Mode
        2. 8.4.1.2 PFM Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Setting Switching Frequency
        3. 9.2.2.3 Setting Peak Current Limit
        4. 9.2.2.4 Setting Output Voltage
        5. 9.2.2.5 Inductor Selection
        6. 9.2.2.6 Input Capacitor Selection
        7. 9.2.2.7 Output Capacitor Selection
        8. 9.2.2.8 Loop Stability
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
      1. 11.2.1 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Development Support
        1. 12.1.2.1 Custom Design With WEBENCH® Tools
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

7.6 Typical Characteristics

VIN = 3.6 V, VOUT = 9 V, TJ = 25°C, unless otherwise noted

GUID-36F88D4A-59AB-4733-8149-3B0A8D3898C3-low.gif
TPS61089 VOUT = 9 V
Figure 7-1 Load Efficiency with Different Input Voltage
GUID-8EFE17B0-EF40-4A8D-ACA8-AAD313224EFE-low.gif
TPS61089
Figure 7-3 Switching Peak Current Limit Setting
GUID-E8D578C4-F717-4C95-8AF3-2ABAE9FBF5B1-low.gifFigure 7-5 Reference Voltage vs Temperature
GUID-C414C586-92DC-442D-8A27-CDB4D8669D1B-low.gifFigure 7-7 Shutdown Current vs Temperature
GUID-220A0C8E-442E-4EBC-8C41-02362D4B2BD5-low.gif
TPS61089 VIN = 3.6 V
Figure 7-2 Load Efficiency with Different Output Voltage
GUID-518D0BCD-4BAE-4027-960B-C1D183C58F41-low.gif
 
Figure 7-4 Switching Frequency Setting
GUID-805A46CE-CAEF-4389-B93E-2B4165481603-low.gifFigure 7-6 Quiescent Current vs Temperature