SLVSAC5 April   2014 TPS62684

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Terminal Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
      1. 9.1.1 Operation
      2. 9.1.2 Switching Frequency
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Spread Spectrum, PWM Frequency Dithering
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable
      2. 9.4.2 Soft Start
      3. 9.4.3 Undervoltage Lockout
      4. 9.4.4 Short-Circuit Protection
      5. 9.4.5 Thermal Shutdown
  10. 10Applications and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Inductor Selection
      2. 10.1.2 Output Capacitor Selection
      3. 10.1.3 Output Filter Design
      4. 10.1.4 Input Capacitor Selection
      5. 10.1.5 Checking Loop Stability
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      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, Lifetime Information and Maximum Output Current
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
      2. 13.1.2 References
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • VIN Range From 3.25V to 5.5V
  • Total Solution Size <12 mm2
  • Three Surface-Mount External Components Required (One 0805 MLCC Inductor, Two small Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Spread Spectrum, PWM Frequency Dithering
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Up to 1600mA load current
  • 5.5MHz Regulated Frequency Operation
  • Available in a 6-Pin NanoFree™ (WCSP)

2 Applications

  • Tablet PC
  • Cell Phones, Smart-Phones
  • Digital TV, WLAN, GPS and Bluetooth® Applications

3 Description

The TPS62684 is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS62684 is optimized for high efficiency and low output voltage ripple, supports up to 1600-mA load current and allows the use of low cost chip inductor and capacitors. With a input voltage range of 3.25V to 5.5V, the device supports applications powered by Li-Ion batteries as well as 5V rails.

The TPS62684 operates at a 5.5-MHz switching frequency with PWM spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a 2.85V fixed output voltage, requiring no external feedback network.

These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.

Device Information

ORDER NUMBER PACKAGE BODY SIZE
TPS62684YFF DSBGA (6) 1.431mm × 1.135mm

Smallest Solution Size Application

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Efficiency vs Load Current

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