SLVSIV1 March   2026 TLV61040-Q1

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 Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Peak Current Control
      2. 6.3.2 Soft Start
      3. 6.3.3 Enable
      4. 6.3.4 Undervoltage Lockout
      5. 6.3.5 Thermal Shutdown
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Inductor Selection, Maximum Load Current
        2. 7.2.2.2 Setting The Output Voltage
        3. 7.2.2.3 Input and Output Capacitor Selection
        4. 7.2.2.4 Diode Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.1 Peak Current Control

The internal switch turns on until the inductor current reaches the typical peak current limit (ILIM) of 400mA. Due to the internal propagation delay of typical 60ns, the actual current exceeds the peak current limit threshold by a small amount. Use Equation 1 to calculate the typical peak current limit:

Equation 1. Ipeak(typ)=ILIM+VINL×60ns

where

  • VIN= Input voltage
  • L= Selected inductor value
  • ILIM = Typical peak current limit, 400mA

The higher the input voltage and the lower the inductor value, the greater the peak.

By selecting the TLV61040-Q1, tailoring the design to the specific application current limit requirements is possible. A lower current limit supports applications requiring lower output power and allows the use of an inductor with a lower current rating and a smaller form factor. A lower current limit typically has a lower output-voltage ripple as well.