SLUSEY1B June   2023  – December 2023 LMR51606 , LMR51610

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 System Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Fixed Frequency Peak Current Mode Control
      2. 7.3.2 Adjustable Output Voltage
      3. 7.3.3 Enable
      4. 7.3.4 Minimum ON Time, Minimum OFF Time, and Frequency Foldback
      5. 7.3.5 Bootstrap Voltage
      6. 7.3.6 Overcurrent and Short-Circuit Protection
      7. 7.3.7 Soft Start
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Active Mode
      3. 7.4.3 CCM Mode
      4. 7.4.4 Light Load Operation (PFM Version)
      5. 7.4.5 Light-Load Operation (FPWM Version)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Setpoint
        3. 8.2.2.3 Switching Frequency
        4. 8.2.2.4 Inductor Selection
        5. 8.2.2.5 Output Capacitor Selection
        6. 8.2.2.6 Input Capacitor Selection
        7. 8.2.2.7 Bootstrap Capacitor
        8. 8.2.2.8 Undervoltage Lockout Setpoint
        9. 8.2.2.9 Replacing Non Sync Converter
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Compact Layout for EMI Reduction
        2. 8.4.1.2 Feedback Resistors
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.7 Typical Characteristics

VIN = 24 V, fSW = 400 kHz, TA = 25°C, unless otherwise specified

GUID-20230510-SS0I-JGV3-ND18-RFFLGXSZNJCW-low.svg
fSW = 400 kHz VOUT = 3.3 V LMR51610X
Figure 6-1 3.3-V PFM Efficiency Versus Load Current
GUID-20230510-SS0I-N6NP-HH8F-SKPNFR38KGRC-low.svg
fSW = 400 kHz VOUT = 5 V LMR51610X
Figure 6-3 5-V PFM Efficiency Versus Load Current
GUID-20230511-SS0I-R7F6-TGT1-V6NTZRGN3S05-low.svg
fSW = 400 kHz VOUT = 12 V LMR51610X
Figure 6-5 12-V PFM Efficiency Versus Load Current
GUID-20230829-SS0I-9QHF-PCXH-2M0N879CGBTD-low.svg
fSW = 1.1 MHz VOUT = 3.3 V LMR51610Y
Figure 6-7 3.3-V PFM Efficiency Versus Load Current
GUID-20230829-SS0I-G4N0-DJXZ-0WDDFLKMN6ZF-low.svg
fSW = 1.1 MHz VOUT = 5 V LMR51610Y
Figure 6-9 5-V PFM Efficiency Versus Load Current
GUID-20230829-SS0I-6VPF-9S3H-9WDGTBVDLR7M-low.svg
fSW = 1.1 MHz VOUT = 12 V LMR51610Y
Figure 6-11 12-V PFM Efficiency Versus Load Current
GUID-20230515-SS0I-GZWX-NTSD-8VNJD33XFJL9-low.svg
fsw = 400 kHz VOUT = 5 V LMR51610X
Figure 6-13 5-V load Regulation
GUID-20230515-SS0I-T243-RFL3-W0M0XMXTD5BT-low.svgFigure 6-15 VIN quiescent current Versus Temperature
GUID-20230515-SS0I-GJDS-1ZLQ-HZFRJGDTM1GT-low.svgFigure 6-17 Reference Voltage Versus Temperature
GUID-20230510-SS0I-S9PV-ZQ63-KF9PDMXLMZJH-low.svg
fSW =400 kHz VOUT = 3.3 V LMR51610XF
Figure 6-2 3.3-V FPWM Efficiency Versus Load Current
GUID-20230511-SS0I-TQW3-ZNKX-WDDGJZXJJCRW-low.svg
fSW = 400 kHz VOUT = 5 V LMR51610XF
Figure 6-4 5-V FPWM Efficiency Versus Load Current
GUID-20230511-SS0I-KFJ6-CRTT-RR67TM3KF7MC-low.svg
fSW = 400 kHz VOUT = 12 V LMR51610XF
Figure 6-6 12-V FPWM Efficiency Versus Load Current
GUID-20230829-SS0I-TB4H-NQZN-579QQ4RMPD65-low.svg
fSW = 1.1 MHz VOUT = 3.3 V LMR51610YF
Figure 6-8 3.3-V FPWM Efficiency Versus Load Current
GUID-20230829-SS0I-J2J4-PXWX-NGQT3K6CV1G0-low.svg
fSW = 1.1 MHz VOUT = 5 V LMR51610YF
Figure 6-10 5-V FPWM Efficiency Versus Load Current
GUID-20230829-SS0I-6NHV-XBKQ-TVBJ2B0NWMX8-low.svg
fSW = 1.1 MHz VOUT = 12 V LMR51610YF
Figure 6-12 12-V FPWM Efficiency Versus Load Current
GUID-20230515-SS0I-JSQL-VMXW-QQRBR5QP4H8W-low.svg
fSW = 400 kHz VOUT = 3.3 V LMR51610X
Figure 6-14 3.3-V Load Regulation
GUID-20230515-SS0I-HQB7-FMLT-RHJJXRFFWK67-low.svgFigure 6-16 VIN UVLO Versus Temperature
GUID-20230515-SS0I-JTHL-D2LZ-W17ML8TPRPJQ-low.svgFigure 6-18 HS and LS Current Limit Versus Temperature