SLVSHL0C June   2024  – September 2024 TPSM81033

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Undervoltage Lockout
      2. 6.3.2 Enable and Soft Start
      3. 6.3.3 Setting the Output Voltage
      4. 6.3.4 Pass-Through Operation
      5. 6.3.5 Power Good Indicator
      6. 6.3.6 Implement Output Discharge by PG function
      7. 6.3.7 Overvoltage Protection
      8. 6.3.8 Output Short-to-Ground Protection
      9. 6.3.9 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 PWM Mode
      2. 6.4.2 Power-Save Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Setting the Output Voltage
        2. 7.2.2.2 Output Capacitor Selection
        3. 7.2.2.3 Input Capacitor Selection
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
      3. 7.4.3 Thermal Considerations
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

1 Features

  • Input voltage range: 1.8V to 5.5V
  • Output voltage range: 2.2V to 5.5V
    • FB connected to VIN for fixed 5.0V output
  • 5.5A valley switching current limit
  • Integreted 0.50μH (at 0A) power inductor
  • Excellent thermal performance:
    • < 30°C temperature rise at VIN = 3.6V, VOUT = 5V, IOUT = 2A, and TA=25C
  • High efficiency and high power capability
    • Two 25mΩ (LS) / 46mΩ (HS) MOSFETs
    • > 90% efficiency at VIN = 3.6V, VOUT = 5V, and IOUT = 2A
  • 2.4MHz switching frequency
  • Typical 20μA quiescent current into VIN pin
  • Typical 0.1μA shutdown current
  • ±1.5% Reference voltage accuracy over –40°C to +125°C
  • Power good output with window comparator
  • Pin-selectable auto PFM or forced PWM at light load
  • Pass-through mode when VIN > VOUT
  • Safety and robust operation features
    • True disconnection between input and output during shutdown
    • Output overvoltage, thermal shutdown protection and output short-circuit protection
  • 2.6mm × 2.5mm QFN-FCMOD 9-Pin package