SNAS714B November   2016  – March 2018 LMS3635-Q1 , LMS3655-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      LMS3655-Q1 Conducted EMI: VOUT = 5 V, IOUT = 5 A
      2.      LMS3655-Q1 Efficiency: VOUT = 5 V
  4. Revision History
  5. Device Comparison Tables
  6. Pin Configuration and Functions
    1.     Pin 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 Thermal Information (for Device Mounted on PCB)
    6. 7.6 Electrical Characteristics
    7. 7.7 System Characteristics
    8. 7.8 Timing Requirements
    9. 7.9 Typical Characteristics
  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 Spread-Spectrum Operation
  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
            2. 9.2.1.2.1.2 Output Inductors and Capacitors
              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
          3. 9.2.1.2.3 FB for Adjustable Output
          4. 9.2.1.2.4 VCC
          5. 9.2.1.2.5 BIAS
          6. 9.2.1.2.6 CBOOT
          7. 9.2.1.2.7 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 6-V 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 Do's and Don't's
  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 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Community Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

Device Comparison Tables

Table 1. LMS3635-Q1 Devices (3.5-A Output)

PART NUMBER OUTPUT VOLTAGE SPREAD SPECTRUM PACKAGE QTY
LMS3635AQRNLRQ1 Adjustable No 3000
LMS3635AQRNLTQ1 Adjustable No 250
LMS36353QRNLRQ1 3.3 V No 3000
LMS36353QRNLTQ1 3.3 V No 250
LMS36355QRNLRQ1 5 V No 3000
LMS36355QRNLTQ1 5 V No 250
LMS3635MQRNLRQ1 Adjustable Yes 3000
LMS3635MQRNLTQ1 Adjustable Yes 250
LMS3635NQRNLRQ1 3.3 V Yes 3000
LMS3635NQRNLTQ1 3.3 V Yes 250
LMS3635LQRNLRQ1 5 V Yes 3000
LMS3635LQRNLTQ1 5 V Yes 250

Table 2. LMS3655-Q1 Devices (5.5-A Output)

PART NUMBER OUTPUT VOLTAGE SPREAD SPECTRUM PACKAGE QTY
LMS3655AQRNLRQ1 Adjustable No 3000
LMS3655AQRNLTQ1 Adjustable No 250
LMS36553QRNLRQ1 3.3 V No 3000
LMS36553QRNLTQ1 3.3 V No 250
LMS36555QRNLRQ1 5 V No 3000
LMS36555QRNLTQ1 5 V No 250
LMS3655MQRNLRQ1 Adjustable Yes 3000
LMS3655MQRNLTQ1 Adjustable Yes 250
LMS3655NQRNLRQ1 3.3 V Yes 3000
LMS3655NQRNLTQ1 3.3 V Yes 250
LMS3655LQRNLRQ1 5 V Yes 3000
LMS3655LQRNLTQ1 5 V Yes 250