SLVSDE4F March   2017  – January 2026 TPS61253A , TPS61253E , TPS61253F

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Start-up
      2. 7.3.2 Enable and Disable
      3. 7.3.3 Undervoltage Lockout (UVLO)
      4. 7.3.4 Current Limit Operation
      5. 7.3.5 Load Disconnection
      6. 7.3.6 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Auto PFM Mode
      2. 7.4.2 Forced PWM Mode
      3. 7.4.3 Ultrasonic Mode
      4. 7.4.4 Pass-Through Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Output Capacitor
        4. 8.2.2.4 Input Capacitor
        5. 8.2.2.5 Checking Loop Stability
        6. 8.2.2.6 Application Curves
      3. 8.2.3 System Examples
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
      3. 8.4.3 Thermal Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

1 Features

  • Wide input voltage range from 2.3V to 5.5V (TPS61253A, TPS61253F)
  • Wide input voltage range from 2.5V to 5.5V (Startup>2.6V, TPS61253E)
  • Fixed output voltage: 4.5 / 4.7 / 5.0 / 5.2V / 5.25V
  • Two FETs integrated: 35mΩ LS-FET, 60mΩ HS-FET
  • IOUT ≥ 1500mA continuously at VOUT = 5V and VIN ≥ 3V (TPS61253A, TPS61253F)
  • IOUT ≥ 1500mA continuously at VOUT = 5.25V and VIN ≥ 3V (TPS61253E)
  • 42µA quiescent current from input
  • 4A switching valley current limit (TPS61253A)
  • 4.5A switching valley current limit (TPS61253E, TPS61253F)

  • TPS61253E and TPS61253F support 1.2V I/O

  • TPS612532A output discharge function available

  • 3.8MHz switching frequency
  • Selectable Auto PFM, Forced PWM, and Ultrasonic mode
  • Support pass-through mode
  • ±2% output voltage accuracy
  • 600µs soft-start time
  • Hiccup-mode short protection
  • Load disconnection during shutdown
  • Thermal shutdown
  • Create a custom design using the TPS61253A with the WEBENCH® Power Designer