SNVSCI9A June   2024  – September 2024 LMR36503E-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 (Automotive) Ratings
   3. 6.3 Recommended Operating Conditions
   4. 6.4 Thermal Information
   5. 6.5 Electrical Characteristics
   6. 6.6 System Characteristics
   7. 6.7 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, Start-Up, and Shutdown
      2. 7.3.2  External CLK SYNC (with MODE/SYNC)
         1. 7.3.2.1 Pulse-Dependent MODE/SYNC Pin Control
      3. 7.3.3  Adjustable Switching Frequency (with RT)
      4. 7.3.4  Power-Good Output Operation
      5. 7.3.5  Internal LDO, VCC UVLO, and VOUT/BIAS Input
      6. 7.3.6  Bootstrap Voltage and VCBOOT-UVLO (CBOOT Terminal)
      7. 7.3.7  Output Voltage Selection
      8. 7.3.8  Soft Start and Recovery from Dropout
         1. 7.3.8.1 Recovery from Dropout
      9. 7.3.9  Current Limit and Short Circuit
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Input Supply Current
   4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
         1. 7.4.3.1 CCM Mode
         2. 7.4.3.2 Auto Mode - Light Load Operation
            1. 7.4.3.2.1 Diode Emulation
            2. 7.4.3.2.2 Frequency Reduction
         3. 7.4.3.3 FPWM Mode - Light Load Operation
         4. 7.4.3.4 Minimum On-Time (High Input Voltage) Operation
         5. 7.4.3.5 Dropout
9. 8 Application and Implementation
   1. 8.1 Application Information
      1. 8.1.1 High Temperature Specifications
   2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
         1. 8.2.2.1  Custom Design With WEBENCH® Tools
         2. 8.2.2.2  Choosing the Switching Frequency
         3. 8.2.2.3  Setting the Output Voltage
            1. 8.2.2.3.1 FB for Adjustable Output
         4. 8.2.2.4  Inductor Selection
         5. 8.2.2.5  Output Capacitor Selection
         6. 8.2.2.6  Input Capacitor Selection
         7. 8.2.2.7  CBOOT
         8. 8.2.2.8  VCC
         9. 8.2.2.9  CFF Selection
            1. 8.2.2.9.1 External UVLO
         10. 8.2.2.10 Maximum Ambient Temperature
      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 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 Development Support
          1. 9.1.2.1 Custom Design With WEBENCH® Tools
    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
    1. 11.1 Tape and Reel Information

LMR36503E-Q1 3V to 65V, 0.3A, Automotive, Grade 0, Synchronous Buck Converter Optimized for Size and Light Load Efficiency