SNVSAA7B December   2015  – July 2021 LM53625-Q1 , LM53635-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 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 System Characteristics
    7. 7.7 Timing Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
      1. 8.2.1 Control Scheme
    3. 8.3 Feature Description
      1. 8.3.1 RESET Flag Output
      2. 8.3.2 Enable and Start-Up
      3. 8.3.3 Soft-Start Function
      4. 8.3.4 Current Limit
      5. 8.3.5 Hiccup Mode
      6. 8.3.6 Synchronizing Input
      7. 8.3.7 Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD)
      8. 8.3.8 Input Supply Current
    4. 8.4 Device Functional Modes
      1. 8.4.1 AUTO Mode
      2. 8.4.2 FPWM Mode
      3. 8.4.3 Dropout
      4. 8.4.4 Input Voltage Frequency Foldback
    5. 8.5 Spread-Spectrum Operation
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 General Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 External Components Selection
            1. 9.2.1.2.1.1 Input Capacitors
              1. 9.2.1.2.1.1.1 Input Capacitor Selection
            2. 9.2.1.2.1.2 Output Inductors and Capacitors Selection
              1. 9.2.1.2.1.2.1 Inductor Selection
              2. 9.2.1.2.1.2.2 Output Capacitor Selection
          2. 9.2.1.2.2 Setting the Output Voltage
            1. 9.2.1.2.2.1 FB for Adjustable Versions
          3. 9.2.1.2.3 VCC
          4. 9.2.1.2.4 BIAS
          5. 9.2.1.2.5 CBOOT
          6. 9.2.1.2.6 Maximum Ambient Temperature
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Fixed 5-V Output for USB-Type Applications
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Fixed 3.3-V Output
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curves
      4. 9.2.4 Adjustable Output
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
        3. 9.2.4.3 Application Curves
    3. 9.3 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    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

5 Device Comparison

Table 5-1 LM53625-Q1 Devices (2.5-A Output)
PART NUMBER OUTPUT VOLTAGE SPREAD SPECTRUM PACKAGE QTY WETTABLE FLANKS
LM53625AQRNLRQ1 Adjustable No 3000 Y
LM53625AQRNLTQ1 Adjustable No 250 Y
LM536253QRNLRQ1 3.3 V No 3000 Y
LM536253QRNLTQ1 3.3 V No 250 Y
LM536255QRNLRQ1 5 V No 3000 Y
LM536255QRNLTQ1 5 V No 250 Y
LM53625MQRNLRQ1 Adjustable Yes 3000 Y
LM53625MQRNLTQ1 Adjustable Yes 250 Y
LM53625NQRNLRQ1 3.3 V Yes 3000 Y
LM53625NQRNLTQ1 3.3 V Yes 250 Y
LM53625LQRNLRQ1 5 V Yes 3000 Y
LM53625LQRNLTQ1 5 V Yes 250 Y
LM53625NQURNLRQ1 3.3 V Yes 3000 N
LM53625MQURNLRQ1 Adjustable Yes 3000 N
LM53625LQURNLRQ1 5 V Yes 3000 N
Table 5-2 LM53635-Q1 Devices (3.5-A Output)
PART NUMBER OUTPUT VOLTAGE SPREAD SPECTRUM PACKAGE QTY Wettable Flanks
LM53635AQRNLRQ1 Adjustable No 3000 Y
LM53635AQRNLTQ1 Adjustable No 250 Y
LM536353QRNLRQ1 3.3 V No 3000 Y
LM536353QRNLTQ1 3.3 V No 250 Y
LM536355QRNLRQ1 5 V No 3000 Y
LM536355QRNLTQ1 5 V No 250 Y
LM53635MQRNLRQ1 Adjustable Yes 3000 Y
LM53635MQRNLTQ1 Adjustable Yes 250 Y
LM53635NQRNLRQ1 3.3 V Yes 3000 Y
LM53635NQRNLTQ1 3.3 V Yes 250 Y
LM53635LQRNLRQ1 5 V Yes 3000 Y
LM53635LQRNLTQ1 5 V Yes 250 Y
LM53635MQURNLRQ1 Adjustable Yes 3000 N
LM53635NQURNLRQ1 3.3 V Yes 3000 N