SLUSEG8B October   2021  – February 2022 LMR54406 , LMR54410

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 System Characteristics
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Fixed Frequency Peak Current Mode Control
      2. 8.3.2 Adjustable Output Voltage
      3. 8.3.3 Enable
      4. 8.3.4 Minimum ON Time, Minimum OFF Time, and Frequency Foldback
      5. 8.3.5 Bootstrap Voltage
      6. 8.3.6 Overcurrent and Short Circuit Protection
      7. 8.3.7 Soft Start
      8. 8.3.8 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
      3. 8.4.3 CCM Mode
      4. 8.4.4 Light Load Operation (PFM Version)
      5. 8.4.5 Light-Load Operation (FPWM Version)
  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 Output Voltage Set-Point
        2. 9.2.2.2 Switching Frequency
        3. 9.2.2.3 Inductor Selection
        4. 9.2.2.4 Output Capacitor Selection
        5. 9.2.2.5 Input Capacitor Selection
        6. 9.2.2.6 Bootstrap Capacitor
        7. 9.2.2.7 Undervoltage Lockout Set-Point
        8. 9.2.2.8 Replacing Non Sync Converter
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Compact Layout for EMI Reduction
      2. 11.1.2 Feedback Resistors
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Typical Characteristics

VIN = 12 V, fSW = 1100 kHz, TA = 25°C, unless otherwise specified

GUID-20211220-SS0I-LP3F-6QL8-CTFML1BQHWHK-low.png
fSW = 1.1 MHzVOUT = 3.3 V
Figure 7-1 3.3-V Efficiency Versus Load Current - LMR54406
GUID-20211220-SS0I-2DS2-S1GH-FGT8KX3TSHCC-low.png
fSW = 1100 kHzVOUT = 5 VLMR54406
Figure 7-3 5-V Efficiency Versus Load Current
GUID-20211220-SS0I-4W1V-VZRB-06GSPMTVRD5W-low.png
fSW = 1100 kHzVOUT = 12 VLMR54410
Figure 7-5 12-V Efficiency Versus Load Current
GUID-20211117-SS0I-C7JL-BKKZ-WCDFNC6X917F-low.png
fSW = 1100kHzVOUT = 5 VLMR54410
Figure 7-7 5-V Load Regulation
fSW = 2.1 MHzVOUT = 5 VLMR54410
Figure 7-9 5-V Dropout
GUID-20211117-SS0I-PBWX-WP6Q-W69PD8XHTH2H-low.pngFigure 7-11 VIN UVLO Versus Temperature
GUID-20211111-SS0I-SZM2-9ML8-7LMXBJZC1FR9-low.pngFigure 7-13 HS and LS Current Limit Versus Temperature
GUID-20211220-SS0I-ZQZT-T0FH-Z6M8QTB7JVPP-low.png
fSW = 1100 kHzVOUT = 3.3V
Figure 7-2 3.3-V Efficiency Versus Load Current - LMR54410
GUID-771406C0-C4B2-44F0-901A-83293C819729-low.gif
fSW = 2.1 MHzVOUT = 5 VLMR54410
Figure 7-4 5-V Efficiency Versus Load Current
GUID-20211220-SS0I-WCMJ-BGPX-7TZ5TJGFMNTG-low.png
fSW = 1100 kHzVOUT = 12VLMR54406
Figure 7-6 12-V Efficiency Versus Load Current
GUID-20211117-SS0I-1NW6-BC2G-BPCH09L1DKTF-low.png
fSW = 1100 kHzVOUT = 12 VLMR54410
Figure 7-8 12-V Load Regulation
GUID-20211117-SS0I-TLQF-3X3G-PB48KVB23ZK8-low.pngFigure 7-10 IQ Versus Temperature
Figure 7-12 Reference Voltage Versus Temperature
Figure 7-14 HS and LS Current Limit Versus Temperature