SLVSL35 September   2026 TUSB2514B

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 Electrical Characteristics
    6. 5.6 Timing Requirements
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Battery Charging Features
      2. 6.3.2 USB Power Management
      3. 6.3.3 Clock Generation
        1. 6.3.3.1 Crystal Requirements
        2. 6.3.3.2 Input Clock Requirements
      4. 6.3.4 Power-Up and Reset
    4. 6.4 Device Functional Modes
      1. 6.4.1 I2C EEPROM Operation
      2. 6.4.2 SMBus Target Operation
      3. 6.4.3 Port Configuration
  8. 7 Register Maps
    1. 7.1 TUSB2514 Registers
  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 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 TUSB2514B Power Supply
      2. 8.3.2 Downstream Port Power
      3. 8.3.3 Ground
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Placement
        2. 8.4.1.2 Package Specific
        3. 8.4.1.3 Differential Pairs
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.3.1 TUSB2514B Power Supply

Implement VDD33 as a single power plane.

  • The VDD33 pins of the TUSB2514B device supply 3.3V power rail to the I/O of the TUSB2514B device. This power rail can be isolated from other power rails by a ferrite bead to reduce noise.
  • All power rails require a 10µF capacitor or 1µF capacitors for stability and noise immunity. These bulk capacitors can be placed anywhere on the power rail. Place the smaller decoupling capacitors as close to the TUSB2514B power pins as possible with an appropriate grouping of two capacitors of differing values per pin.