SNVS572E July   2008  – January 2016 LM25037 , LM25037-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings: LM25037
    3. 6.3 ESD Ratings: LM25037-Q1
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Electrical Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 High-Voltage Start-Up Regulator
      2. 7.3.2 Line Undervoltage Detector
      3. 7.3.3 Reference
      4. 7.3.4 Error Amplifier
      5. 7.3.5 Cycle-By-Cycle Current Limit
      6. 7.3.6 Overload Protection Timer
      7. 7.3.7 Soft-Start
      8. 7.3.8 PWM Comparator
      9. 7.3.9 RAMP Pin
    4. 7.4 Device Functional Modes
      1. 7.4.1 Feed-Forward Voltage Mode
      2. 7.4.2 Current Mode
      3. 7.4.3 Oscillator
      4. 7.4.4 Sync Capability
      5. 7.4.5 Gate Driver Outputs (OUTA and OUTB)
      6. 7.4.6 Thermal Protection
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Topology and Control Algorithm Choice
      2. 8.1.2 Voltage Mode Control Using the LM25037
      3. 8.1.3 Current Mode Control Using the LM25037
      4. 8.1.4 VIN and VCC
      5. 8.1.5 Applications With >75-V Input
      6. 8.1.6 Current Sense
      7. 8.1.7 UVLO Divider Selection
      8. 8.1.8 Hiccup Mode Current Limit Restart (RES)
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Oscillator Frequency and Maximum Duty Cycle
        2. 8.2.2.2  Power Stage Design
        3. 8.2.2.3  UVLO Setting
        4. 8.2.2.4  VIN, VCC, Start-Up
        5. 8.2.2.5  Current Sense Resistor
        6. 8.2.2.6  Current-Mode Control
        7. 8.2.2.7  Slope Compensation Ramp
        8. 8.2.2.8  Soft-start
        9. 8.2.2.9  Overload Timer
        10. 8.2.2.10 Output Voltage Feedback
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

12 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.