SNVSAU4C September   2018  – April 2024 LM5164

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 Conversion Efficiency (Log Scale)Figure 7-2 Conversion Efficiency (Log Scale)
LM5164 Load and Line Regulation Performance
Figure 7-4 Load and Line Regulation Performance
LM5164 No-Load Start-up with VIN
VIN = 24 VIOUT = 0 A
Figure 7-6 No-Load Start-up with VIN
LM5164 No-Load Start-up and Shutdown with EN/UVLO
VIN = 24 VIOUT = 0 A
Figure 7-8 No-Load Start-up and Shutdown with EN/UVLO
LM5164 Pre-bias Start-up with EN/UVLO
VIN = 24 VIOUT = 0 A
Figure 7-10 Pre-bias Start-up with EN/UVLO
LM5164 Short Circuit Recovery
VIN = 24 VLoad = Short to 0 A
Figure 7-12 Short Circuit Recovery
LM5164 No-Load Switching
VIN = 24 VIOUT = 0 A
Figure 7-14 No-Load Switching
LM5164 CISPR 25 Class 5 Conducted Emissions Plot, 150 kHz to 30 MHz
VIN = 48 V Load = 1 A Rsnub = 1 Ω, Csnub = 680 pF
Figure 7-16 CISPR 25 Class 5 Conducted Emissions Plot, 150 kHz to 30 MHz
LM5164 Conversion Efficiency (Linear Scale)Figure 7-3 Conversion Efficiency (Linear Scale)
LM5164 Load Step Response
VIN = 24 VIOUT = 0.25 A to 1 A at 0.1 A/μs
Figure 7-5 Load Step Response
LM5164 Full-Load Start-up with VIN
VIN = 24 VIOUT = 1 A (Resistive)
Figure 7-7 Full-Load Start-up with VIN
LM5164 Full-Load Start-up and Shutdown with EN/UVLO
VIN = 24 VIOUT = 1 A (Resistive)
Figure 7-9 Full-Load Start-up and Shutdown with EN/UVLO
LM5164 Short Circuit Applied
VIN = 24 VLoad = 0 A to Short
Figure 7-11 Short Circuit Applied
LM5164 No Load to Short Circuit/Short Circuit Recovery
VIN = 24 VLoad = 0 A to Short to .0 A
Figure 7-13 No Load to Short Circuit/Short Circuit Recovery
LM5164 Full-Load Switching
VIN = 24 VIOUT = 1 A
Figure 7-15 Full-Load Switching
LM5164 CISPR 25 Class 5 Conducted Emissions Plot, 30 MHz to 108 MHz
VIN = 48 V Load = 1 A Rsnub = 1 Ω, Csnub = 680 pF
Figure 7-17 CISPR 25 Class 5 Conducted Emissions Plot, 30 MHz to 108 MHz