SLUSFG7 April   2025 TPS62A02-Q1 , TPS62A02A-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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
  8. 7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Save Mode
      2. 8.3.2 100% Duty Cycle Low Dropout Operation
      3. 8.3.3 Soft Start
      4. 8.3.4 Switch Current Limit and Short-Circuit Protection (HICCUP)
      5. 8.3.5 Undervoltage Lockout
      6. 8.3.6 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable and Disable
      2. 8.4.2 Power Good
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Setting the Output Voltage
        2. 9.2.2.2 Feed Forward Capacitor CFF
        3. 9.2.2.3 Inductor Selection
        4. 9.2.2.4 Input Capacitor
        5. 9.2.2.5 Output Capacitor
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 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
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

9.2.1 Design Requirements

For this design example, use the parameters listed in Table 9-1 as the input parameters

Table 9-1 Design Parameters
DESIGN PARAMETEREXAMPLE VALUE
Input voltage2.5V to 5.5V
Output voltage1.8V
Maximum output current2A

Table 9-2 lists the components used for the example.

Table 9-2 List of Components
REFERENCE DESCRIPTION MANUFACTURER(1)
C1 4.7µF, Ceramic Capacitor, 10V, X7R, size 0805, GRM21BR71A475KA73L Murata
C2 22µF, Ceramic Capacitor, 10V, X7R, size 0805, GRM21BZ71A226KE15L Murata
L1 1µH, Power Inductor, XGL3520-102MEC Coilcraft
R1, R2, R3 R1 = 200kΩ, R2 = 100kΩ, R3 = 499kΩ, Chip resistor, 1%, size 0603 Std.
C3 Optional up to 120pF, checked with 10pF for 3.3V, 15pF for 1.8V, and 22pF for 1.2V VOUT using this bill of material. When implementing changes, make sure phase margin of > 45 degrees through Bode measurement. Std.
(1) See the Third-Party Products Disclaimer.