SBVS220C March   2013  – October 2026 TPS7A37

PRODUCTION DATA  

  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 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Internal Current Limit
      2. 6.3.2 Enable Pin and Shutdown
      3. 6.3.3 Reverse Current
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Input and Output Capacitor Requirements
      2. 7.1.2 Output Noise
      3. 7.1.3 Dropout Voltage
      4. 7.1.4 Transient Response
    2. 7.2 Typical Applications
      1. 7.2.1 Typical Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Fixed-Voltage Version
      3. 7.2.3 Adjustable Operation
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Board Layout Recommendations to Improve PSRR and Noise Performance
        2. 7.4.1.2 Thermal Considerations
        3. 7.4.1.3 Power Dissipation
        4. 7.4.1.4 Estimating Junction Temperature
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.3 Adjustable Operation

Figure 7-11 gives the connections for the adjustable output version, TPS7A3701 (1).

R1 and R2 can be calculated for any output voltage using the formula shown in Figure 7-11. Sample resistor values for common output voltages are shown in Figure 6-2.

For best accuracy, make the parallel combination of R1 and R2 approximately equal to 19kΩ. This 19kΩ, in addition to the internal 8kΩ resistor, presents the same impedance to the error amp as the 27kΩ bandgap reference output. This impedance helps compensate for leakages into the error amp terminals.

TPS7A37 Typical Application Circuit for Adjustable-Voltage Version(1)Figure 7-11 Typical Application Circuit for Adjustable-Voltage Version(1)
1. Product-preview device.