SLVSCJ0F March   2014  – July 2025 TPS25200

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 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable
      2. 7.3.2 Thermal Sense
      3. 7.3.3 Overcurrent Protection
      4. 7.3.4 FAULT Response
      5. 7.3.5 Output Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Undervoltage Lockout (UVLO)
      2. 7.4.2 Overcurrent Protection (OCP)
      3. 7.4.3 Overvoltage Clamp (OVC)
      4. 7.4.4 Overvoltage Lockout (OVLO)
  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 Step by Step Design Produce
        2. 8.2.2.2 Input and Output Capacitance
        3. 8.2.2.3 Programming the Current-Limit Threshold
        4. 8.2.2.4 Design Above a Minimum Current Limit
        5. 8.2.2.5 Design Below a Maximum Current Limit
        6. 8.2.2.6 Power Dissipation and Junction Temperature
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.2.4 Design Above a Minimum Current Limit

Some applications require that current limiting cannot occur below a certain threshold. For this example, assume that 2.1 A must be delivered to the load so that the minimum desired current-limit threshold is 2100 mA. Use the IOS equations (Equation 1) and Figure 9-4 to select RILIM as shown in Equation 2.

Equation 2. TPS25200

Select the closest 1% resistor less than the calculated value: RILIM = 42.2 kΩ. This sets the minimum current-limit threshold at 2130 mA as shown in Equation 3.

Equation 3. TPS25200

Use the IOS equations (Equation 1), Figure 9-4, and the previously calculated value for RILIM to calculate the maximum resulting current-limit threshold as shown in Equation 4.

Equation 4. TPS25200

The resulting current-limit threshold minimum is 2130 mA and maximum is 2479 mA with RILIM = 42.2kΩ ± 1%.