SNVSB51C September   2018  – December 2025 LM5164-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Control Architecture
      2. 6.3.2  Internal VCC Regulator and Bootstrap Capacitor
      3. 6.3.3  Regulation Comparator
      4. 6.3.4  Internal Soft Start
      5. 6.3.5  On-Time Generator
      6. 6.3.6  Current Limit
      7. 6.3.7  N-Channel Buck Switch and Driver
      8. 6.3.8  Synchronous Rectifier
      9. 6.3.9  Enable/Undervoltage Lockout (EN/UVLO)
      10. 6.3.10 Power Good (PGOOD)
      11. 6.3.11 Thermal Protection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Active Mode
      3. 6.4.3 Sleep Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Switching Frequency (RRON)
        3. 7.2.2.3 Buck Inductor (LO)
        4. 7.2.2.4 Output Capacitor (COUT)
        5. 7.2.2.5 Input Capacitor (CIN)
        6. 7.2.2.6 Type-3 Ripple Network
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Compact PCB Layout for EMI Reduction
        2. 7.4.1.2 Feedback Resistors
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
      2. 8.1.2 Development Support
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.2.3 Application Curves

LM5164-Q1 Conversion Efficiency (Log Scale)Figure 7-2 Conversion Efficiency (Log Scale)
LM5164-Q1 Load and Line Regulation Performance
Figure 7-4 Load and Line Regulation Performance
LM5164-Q1 No-Load Start-up with VIN
VIN = 24VIOUT = 0A
Figure 7-6 No-Load Start-up with VIN
LM5164-Q1 No-Load Start-up and Shutdown with EN/UVLO
VIN = 24VIOUT = 0A
Figure 7-8 No-Load Start-up and Shutdown with EN/UVLO
LM5164-Q1 Pre-bias Start-up with EN/UVLO
VIN = 24VIOUT = 0A
Figure 7-10 Pre-bias Start-up with EN/UVLO
LM5164-Q1 Short Circuit Recovery
VIN = 24VLoad = Short to 0A
Figure 7-12 Short Circuit Recovery
LM5164-Q1 No-Load Switching
VIN = 24VIOUT = 0A
Figure 7-14 No-Load Switching
LM5164-Q1 Conversion Efficiency (Linear Scale)Figure 7-3 Conversion Efficiency (Linear Scale)
LM5164-Q1 Load Step Response
VIN = 24VIOUT = 0.25A to 1A at 0.1A/μs
Figure 7-5 Load Step Response
LM5164-Q1 Full-Load Start-up with VIN
VIN = 24VIOUT = 1A (Resistive)
Figure 7-7 Full-Load Start-up with VIN
LM5164-Q1 Full-Load Start-up and Shutdown with EN/UVLO
VIN = 24VIOUT = 1A (Resistive)
Figure 7-9 Full-Load Start-up and Shutdown with EN/UVLO
LM5164-Q1 Short Circuit Applied
VIN = 24VLoad = 0A to Short
Figure 7-11 Short Circuit Applied
LM5164-Q1 No Load to Short Circuit/Short Circuit Recovery
VIN = 24VLoad = 0A to Short to 0A
Figure 7-13 No Load to Short Circuit/Short Circuit Recovery
LM5164-Q1 Full-Load Switching
VIN = 24VIOUT = 1A
Figure 7-15 Full-Load Switching