SNVSAR6B December   2016  – March 2018 LMR23630-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Efficiency vs Load, VIN = 12 V, PFM Option
  4. 4 Revision History
  5. 5 Product Portfolio
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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 Electrical Characteristics
    6. 7.6 Timing Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Fixed-Frequency Peak-Current-Mode Control
      2. 8.3.2  Adjustable Frequency
      3. 8.3.3  Adjustable Output Voltage
      4. 8.3.4  Enable/Synchronization
      5. 8.3.5  VCC, UVLO
      6. 8.3.6  Minimum ON-time, Minimum OFF-time and Frequency Foldback at Dropout Conditions
      7. 8.3.7  Power Good (PGOOD)
      8. 8.3.8  Internal Compensation and CFF
      9. 8.3.9  Bootstrap Voltage (BOOT)
      10. 8.3.10 Overcurrent and Short-Circuit Protection
      11. 8.3.11 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
      3. 8.4.3 CCM Mode
      4. 8.4.4 Light Load Operation (PFM Option)
      5. 8.4.5 Light Load Operation (FPWM Option)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Custom Design With WEBENCH® Tools
        2. 9.2.2.2  Output Voltage Setpoint
        3. 9.2.2.3  Switching Frequency
        4. 9.2.2.4  Inductor Selection
        5. 9.2.2.5  Output Capacitor Selection
        6. 9.2.2.6  Feed-Forward Capacitor
        7. 9.2.2.7  Input Capacitor Selection
        8. 9.2.2.8  Bootstrap Capacitor Selection
        9. 9.2.2.9  VCC Capacitor Selection
        10. 9.2.2.10 UVLO Setpoint
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Compact Layout for EMI Reduction
      2. 11.1.2 Ground Plane and Thermal Considerations
      3. 11.1.3 Feedback Resistors
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Custom Design With WEBENCH® Tools
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DDA|8
  • DRR|12
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.2.3 Application Curves

Unless otherwise specified the following conditions apply: VIN = 12 V, fSW = 400 kHz, L = 8.2 µH, COUT = 150 µF, TA = 25 °C.
LMR23630-Q1 waveform_01_snvsah2.png
VOUT = 5 V IOUT = 3 A fSW = 400 kHz
Figure 24. CCM Mode
LMR23630-Q1 waveform_03_snvsah2.png
VOUT = 5 V IOUT = 0 mA fSW = 400 kHz
Figure 26. PFM Mode
LMR23630-Q1 waveform_02_snvsah2.png
VOUT = 5 V IOUT = 150 mA fSW = 400 kHz
Figure 25. DCM Mode
LMR23630-Q1 waveform_04_snvsah2.png
VOUT = 5 V IOUT = 0 mA fSW = 400 kHz
Figure 27. FPWM Mode
LMR23630-Q1 waveform_05_snvsah2.png
VIN = 12 V VOUT = 5 V IOUT = 2 A
Figure 28. Start-Up by VIN
LMR23630-Q1 waveform_07_snvsah2.png
VIN = 12 V VOUT = 5 V IOUT = 0.3 A to 3 A, 100 mA / μs
Figure 30. Load Transient
LMR23630-Q1 waveform_09_snvsah2.png
VOUT = 5 V IOUT = 1 A to short
Figure 32. Short Protection
LMR23630-Q1 waveform_06_snvsah2.png
VIN = 12 V VOUT = 5 V IOUT = 2 A
Figure 29. Start-Up by EN
LMR23630-Q1 waveform_08_snvsah2.png
VIN = 7 V to 36 V, 2 V / μs VOUT = 5 V IOUT = 3 A
Figure 31. Line Transient
LMR23630-Q1 waveform_10_snvsah2.png
VOUT = 5 V IOUT = short to 1 A
Figure 33. Short Recovery