SLVSBC6C March   2013  – December 2019 TPS84A20

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Application
  4. 4 Revision History
  5. 5 Ordering Information
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Package Specifications
    4. 6.4 Electrical Characteristics
    5. 6.5 Thermal Information
  7. 7 Device Information
    1. 7.1      Functional Block Diagram
    2. Table 1. Pin Descriptions
  8. 8 Typical Characteristics (PVIN = VIN = 12 V)
  9. 9 Typical Characteristics (PVIN = VIN = 5 V)
  10. 10Typical Characteristics (PVIN = 3.3 V, VIN = 5 V)
  11. 11Application Information
    1. 11.1  Adjusting the Output Voltage
    2. 11.2  Capacitor Recommendations for the TPS84A20 Power Supply
      1. 11.2.1 Capacitor Technologies
        1. 11.2.1.1 Electrolytic, Polymer-Electrolytic Capacitors
        2. 11.2.1.2 Ceramic Capacitors
        3. 11.2.1.3 Tantalum, Polymer-Tantalum Capacitors
      2. 11.2.2 Input Capacitor
      3. 11.2.3 Output Capacitor
    3. 11.3  Transient Response
    4. 11.4  Transient Waveforms
    5. 11.5  Application Schematics
    6. 11.6  VIN and PVIN Input Voltage
    7. 11.7  3.3 V PVIN Operation
    8. 11.8  Power Good (PWRGD)
    9. 11.9  Light Load Efficiency (LLE)
    10. 11.10 SYNC_OUT
    11. 11.11 Parallel Operation
    12. 11.12 Power-Up Characteristics
    13. 11.13 Pre-Biased Start-Up
    14. 11.14 Remote Sense
    15. 11.15 Thermal Shutdown
    16. 11.16 Output On/Off Inhibit (INH)
    17. 11.17 Slow Start (SS/TR)
    18. 11.18 Overcurrent Protection
    19. 11.19 Synchronization (CLK)
    20. 11.20 Sequencing (SS/TR)
    21. 11.21 Programmable Undervoltage Lockout (UVLO)
    22. 11.22 Layout Considerations
    23. 11.23 EMI
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Tape and Reel Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RVQ|42
Thermal pad, mechanical data (Package|Pins)
Orderable Information

11.14 Remote Sense

The SENSE+ pin must be connected to VOUT at the load, or at the device pins.

Connecting the SENSE+ pin to VOUT at the load improves the load regulation performance of the device by allowing it to compensate for any I-R voltage drop between its output pins and the load. An I-R drop is caused by the high output current flowing through the small amount of pin and trace resistance. This should be limited to a maximum of 300 mV.

NOTE

The remote sense feature is not designed to compensate for the forward drop of nonlinear or frequency dependent components that can be placed in series with the converter output. Examples include OR-ing diodes, filter inductors, ferrite beads, and fuses. When these components are enclosed by the SENSE+ connection, they are effectively placed inside the regulation control loop, which can adversely affect the stability of the regulator.