SNVSBD7 October   2019 LMR36510

ADVANCE INFORMATION for pre-production products; subject to change without notice.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1. 3.1 Simplified Schematic
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 System Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power-Good Flag Output
      2. 7.3.2 Enable and Start-up
      3. 7.3.3 Current Limit and Short Circuit
      4. 7.3.4 Undervoltage Lockout and Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Auto Mode
      2. 7.4.2 Dropout
      3. 7.4.3 Minimum Switch On-Time
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design 1: Low Power 24-V, 1-ABuck Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Choosing the Switching Frequency
          2. 8.2.1.2.2 Setting the Output Voltage
          3. 8.2.1.2.3 Inductor Selection
          4. 8.2.1.2.4 Output Capacitor Selection
          5. 8.2.1.2.5 Input Capacitor Selection
          6. 8.2.1.2.6 CBOOT
          7. 8.2.1.2.7 VCC
          8. 8.2.1.2.8 CFF Selection
            1. 8.2.1.2.8.1 External UVLO
          9. 8.2.1.2.9 Maximum Ambient Temperature
    3. 8.3 What to Do and What Not to Do
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Ground and Thermal Considerations
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Features

  • Designed for reliable and rugged applications
    • Input transient protection up to 70 V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • Internal compensation helps reduce solution size, cost and design complexity
    • 400-kHz frequency
  • Wide conversion range
    • Input voltage range: 4.2 V to 65 V
    • Output voltage range: 1 V to 95% of VIN
    • Short minimum on time of 60 ns
  • Low-power dissipation across load spectrum
    • 90% efficiency at 400 kHz (24 VIN, 5 VOUT,
      1 A)
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26 µA
  • Power-good output with filter and delayed release