SNAS871A July   2025  – February 2026 LMR60406-Q1

PRODMIX  

  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
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable and Undervoltage Lockout
      2. 7.3.2 Soft Start and Recovery from Dropout
      3. 7.3.3 Frequency Selection With RT
      4. 7.3.4 MODE/SYNC Pin Control
      5. 7.3.5 Output Voltage Selection
      6. 7.3.6 Current Limit
      7. 7.3.7 Hiccup Mode
      8. 7.3.8 Power-Good Function
      9. 7.3.9 Spread Spectrum
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown
      2. 7.4.2 Active Mode
        1. 7.4.2.1 Continuous Conduction Mode (CCM)
        2. 7.4.2.2 Auto Mode Operation - Light Load Operation
        3. 7.4.2.3 FPWM Operation - Light Load Operation
        4. 7.4.2.4 Minimum On-Time
        5. 7.4.2.5 Dropout
  9. 8 Applications 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 Switching Frequency Selection
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 Input Capacitor Selection
        5. 8.2.2.5 Bootstrap Capacitor (CBOOT) Selection
        6. 8.2.2.6 FB Voltage Divider for Adjustable Versions
          1. 8.2.2.6.1 Feedforward Capacitor (CFF) Selection
        7. 8.2.2.7 RPU - PGOOD Pullup Resistor
      3. 8.2.3 Application Curves
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
        1. 8.5.1.1 Ground and Thermal Plane Considerations
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.6 Typical Characteristics

VIN = 13.5V, TA = 25°C (unless otherwise noted). Specified temperatures are ambient.

LMR60406-Q1 High side MOSFET current limitFigure 6-1 High side MOSFET current limit
LMR60406-Q1 High side MOSFET RDS-ONFigure 6-3 High side MOSFET RDS-ON
LMR60406-Q1 Output voltage accuracy
3.3V Fixed Output
Figure 6-5 Output voltage accuracy
LMR60406-Q1 Soft-start timeFigure 6-7 Soft-start time
LMR60406-Q1 Feedback voltage accuracyFigure 6-9 Feedback voltage accuracy
LMR60406-Q1 Input voltage UVLO - B variantFigure 6-11 Input voltage UVLO - B variant
LMR60406-Q1 Low side MOSFET current limitFigure 6-2 Low side MOSFET current limit
LMR60406-Q1 Low side MOSFET RDS-ONFigure 6-4 Low side MOSFET RDS-ON
LMR60406-Q1 Output voltage accuracy
5V Fixed Output
Figure 6-6 Output voltage accuracy
LMR60406-Q1 Enable threshold voltageFigure 6-8 Enable threshold voltage
LMR60406-Q1 Input voltage UVLO - A variantFigure 6-10 Input voltage UVLO - A variant
LMR60406-Q1 PGOOD thresholdsFigure 6-12 PGOOD thresholds