SLLSEU8B March   2017  – May 2020 TPD2S703-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      USB 2.0 Port With Short-to-Battery and IEC ESD Protection
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings—AEC Specification
    3. 6.3  ESD Ratings—IEC Specification
    4. 6.4  ESD Ratings—ISO Specification
    5. 6.5  Recommended Operating Conditions
    6. 6.6  Thermal Information
    7. 6.7  Electrical Characteristics
    8. 6.8  Power Supply and Supply Current Consumption Chracteristics
    9. 6.9  Timing Requirements
    10. 6.10 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 OVP Operation
      2. 8.3.2 OVP Threshold
      3. 8.3.3 D± Clamping Voltage
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Device Operation
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Common choke and Inductor for VD+ and VD-
        2. 9.2.2.2 VREF Operation
          1. 9.2.2.2.1 Mode 0
          2. 9.2.2.2.2 Mode 1
        3. 9.2.2.3 Mode 1 Enable Timing
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 VPWR Path
    2. 10.2 VREF Pin
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.2.2.2 Mode 1

To operate in Mode 1, ensure that Rtop || Rbot, resistance between the MODE pin and ground, is greater than 14 kΩ. This is accomplished by insuring Rtop || Rbot > 14 kΩ because when the device is initially powered up, VREF is at ground until the internal circuitry recognizes if the device is in Mode 1 or Mode 2.

In Mode 1, VREF is set by using an internal regulator to set the voltage. Using a resistor divider off of a feedback comparator is how to set VREF, similar to a standard LDO or DC/DC. VREF is set in Mode 1 according to Equation 5.

Equation 5. TPD2S703-Q1 Equation_1.gif

Equation 5 yields the typical value for VREF. When using ±1% resistors RTOP and RBOT, VREF accuracy is going to be ±5%. Therefore, the minimum and maximum values for VREF can be calculated off of the typical VREF. The parametric tables above give example RTOP and RBOT resistors to use for standard output VREF voltages for Mode 1.