SLVSCG0 July   2014 TPS57114-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Description (continued)
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Fixed-Frequency Pwm Control
      2. 9.3.2  Slope Compensation and Output Current
      3. 9.3.3  Bootstrap Voltage (Boot) and Low-Dropout Operation
      4. 9.3.4  Error Amplifier
      5. 9.3.5  Voltage Reference
      6. 9.3.6  Adjusting the Output Voltage
      7. 9.3.7  Enable Functionality and Adjusting UVLO
      8. 9.3.8  Slow-Start or Tracking Pin
      9. 9.3.9  Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
      10. 9.3.10 Overcurrent Protection
      11. 9.3.11 Frequency Shift
      12. 9.3.12 Reverse Overcurrent Protection
      13. 9.3.13 Synchronize Using the RT/CLK Pin
      14. 9.3.14 Power Good (PWRGD Pin)
      15. 9.3.15 Overvoltage Transient Protection (OVTP)
      16. 9.3.16 Thermal Shutdown
      17. 9.3.17 Small-Signal Model for Loop Response
      18. 9.3.18 Simple Small-Signal Model for Peak-Current Mode Control
      19. 9.3.19 Small-Signal Model for Frequency Compensation
    4. 9.4 Device Functional Modes
      1. 9.4.1 RT (Resistor Timing) Mode
      2. 9.4.2 CLK (External Clock) Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Sequencing
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Selecting the Switching Frequency
        2. 10.2.2.2 Output Inductor Selection
        3. 10.2.2.3 Output Capacitor
        4. 10.2.2.4 Input Capacitor
        5. 10.2.2.5 Slow-Start Capacitor
        6. 10.2.2.6 Bootstrap Capacitor Selection
        7. 10.2.2.7 Output-Voltage and Feedback-Resistor Selection
        8. 10.2.2.8 Compensation
        9. 10.2.2.9 Power-Dissipation Estimate
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

11 Power Supply Recommendations

This device is designed to operate from an input voltage supply range between 2.95 and 6 V. This input supply should be well regulated. If the input supply is located more than a few inches from the TPS57114-EP converter, additional bulk capacitance may be required in addition to the ceramic bypass capacitors. A tantalum capacitor with a value of 47 μF is a typical choice; however, this may vary depending upon the output power being delivered.