SNAS874 December   2024 LMR60440-Q1

ADVANCE INFORMATION  

  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 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 Enable and Undervoltage Lockout (UVLO)
      2. 7.3.2 Soft Start and Recovery from Dropout
      3. 7.3.3 Frequency Selection With RT
      4. 7.3.4 MODE/SYNC Pin Control
      5. 7.3.5 Output Voltage Selection
      6. 7.3.6 Current Limit
      7. 7.3.7 Hiccup Mode
      8. 7.3.8 Power-Good Function
      9. 7.3.9 Spread Spectrum
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown
      2. 7.4.2 Active Mode
        1. 7.4.2.1 Continuous Conduction Mode (CCM)
        2. 7.4.2.2 Auto Mode - Light Load Operation
        3. 7.4.2.3 FPWM Operation - Light Load Operation
        4. 7.4.2.4 Minimum On-Time
        5. 7.4.2.5 Dropout
  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 Switching Frequency Selection
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 Input Capacitor Selection
        5. 8.2.2.5 Bootstrap Capacitor (CBOOT) Selection
        6. 8.2.2.6 FB Voltage Divider for Adjustable Output Voltages
          1. 8.2.2.6.1 Feedforward Capacitor (CFF) Selection
        7. 8.2.2.7 RPG - PG Pullup Resistor
      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 Ground and Thermal Plane Considerations
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

11.1 Tape and Reel Information

LMR60440-Q1
Device Package
Type		 Package Drawing Pins SPQ Reel
Diameter (mm)		 Reel
Width W1 (mm)		 A0
(mm)		 B0
(mm)		 K0
(mm)		 P1
(mm)		 W
(mm)		 Pin1
Quadrant
LMR604403SRAKRQ1 WQFN-HR RAK 9 3000 180 8.4 2.3 2.8 1.15 4.0 8.0 Q1
XLMR604403SRAKRQ1 WQFN-HR RAK 9 3000 180 8.4 2.3 2.8 1.15 4.0 8.0 Q1
LMR604404SRAKRQ1 WQFN-HR RAK 9 3000 180 8.4 2.3 2.8 1.15 4.0 8.0 Q1
LMR604405SRAKRQ1 WQFN-HR RAK 9 3000 180 8.4 2.3 2.8 1.15 4.0 8.0 Q1
LMR60440-Q1
Device Package
Type		 Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LMR604403SRAKRQ1 WQFN-HR RAK 9 3000 210 185 35
XLMR604403SRAKRQ1 WQFN-HR RAK 9 3000 210 185 35
LMR604404SRAKRQ1 WQFN-HR RAK 9 3000 210 185 35
LMR604405SRAKRQ1 WQFN-HR RAK 9 3000 210 185 35
LMR60440-Q1
LMR60440-Q1
LMR60440-Q1