SLVSCJ5C December   2015  – September 2024 TPS7H3301-SP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 VTT/VO Sink and Source Regulator
      2. 7.3.2 Reference Input (VDDQSNS)
      3. 7.3.3 Reference Output (VTTREF)
      4. 7.3.4 EN Control (EN)
      5. 7.3.5 Power-Good Function (PGOOD)
      6. 7.3.6 VTT Current Protection
      7. 7.3.7 VIN UVLO Protection
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
  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 Detailed Design Procedure
        1. 8.2.2.1 VDD/VIN Capacitor
        2. 8.2.2.2 VLDO Input Capacitor
        3. 8.2.2.3 VTT Output Capacitor
        4. 8.2.2.4 VTTSNS Connection
        5. 8.2.2.5 Low VIN Applications
        6. 8.2.2.6 S3 and Pseudo-S5 Support
        7. 8.2.2.7 Tracking Startup and Shutdown
        8. 8.2.2.8 Output Tolerance Consideration for VTT DIMM or Module Applications
        9. 8.2.2.9 LDO Design Guidelines
      3. 8.2.3 Application Curve
  10.   Power Supply Recommendations
  11. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
  12. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  13.   Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.1 VTT/VO Sink and Source Regulator

The TPS7H3301-SP is a 3-A sink and source tracking termination regulator specifically designed for low input voltage, and low external component count systems where space is a key application parameter. The TPS7H3301-SP integrates a high-performance, low-dropout (LDO) linear regulator that is capable of both sinking and sourcing current. The LDO regulator employs a fast feedback loop so that ceramic capacitors can be used to support the fast load transient response. To achieve tight regulation with minimum effect of trace resistance, a remote sensing pin (VTTSNS) should be connected to the positive pin of the output capacitor(s) as a separate trace from the high-current path of VTT/VO.

The TPS7H3301-SP has a dedicated pin (VLDOIN) for VTT power supply to minimize the LDO power dissipation on user application. The minimum VLDOIN voltage is 400 mV above the 1/2 VDDQSNS voltage or as highlighted in Section 6.5 (VLDOIN to VTT headroom) for various load conditions.