JAJSJO5B October   2022  – August 2024 LM64440-Q1 , LM64460-Q1

PRODUCTION DATA  

  1.   1
  2. 特長
  3. アプリケーション
  4. 概要
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1. 5.1 Wettable Flanks
    2. 5.2 Pinout Design for Clearance and FMEA
  7. 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 Timing Characteristics
    7. 6.7 Systems Characteristics
    8. 6.8 Typical Characteristics
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Input Voltage Range (VIN1, VIN2)
      2. 7.3.2  Output Voltage Setpoint (FB)
      3. 7.3.3  Precision Enable and Input Voltage UVLO (EN)
      4. 7.3.4  MODE/SYNC Operation
        1. 7.3.4.1 Level-Dependent MODE/SYNC Control
        2. 7.3.4.2 Pulse-Dependent MODE/SYNC Control
      5. 7.3.5  Clock Locking
      6. 7.3.6  Power-Good Monitor (PGOOD)
      7. 7.3.7  Bias Supply Regulator (VCC, BIAS)
      8. 7.3.8  Bootstrap Voltage and UVLO (CBOOT)
      9. 7.3.9  Spread Spectrum
      10. 7.3.10 Soft Start and Recovery From Dropout
      11. 7.3.11 Overcurrent and Short-Circuit Protection
      12. 7.3.12 Thermal Shutdown
      13. 7.3.13 Input Supply Current
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 CCM Mode
        2. 7.4.3.2 AUTO Mode – Light-Load Operation
          1. 7.4.3.2.1 Diode Emulation
          2. 7.4.3.2.2 Frequency Foldback
        3. 7.4.3.3 FPWM Mode – Light-Load Operation
        4. 7.4.3.4 Minimum On-Time (High Input Voltage) Operation
        5. 7.4.3.5 Dropout
  9. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1 – Automotive Synchronous 6A Buck Regulator at 2.1MHz
        1. 8.2.1.1 Design Requirements
      2. 8.2.2 Design 2 – Automotive Synchronous 4A Buck Regulator at 2.1MHz
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1  Custom Design With WEBENCH® Tools
          2. 8.2.2.2.2  Setting the Output Voltage
          3. 8.2.2.2.3  Choosing the Switching Frequency
          4. 8.2.2.2.4  Inductor Selection
          5. 8.2.2.2.5  Output Capacitor Selection
          6. 8.2.2.2.6  Input Capacitor Selection
          7. 8.2.2.2.7  Bootstrap Capacitor
          8. 8.2.2.2.8  VCC Capacitor
          9. 8.2.2.2.9  BIAS Power Connection
          10. 8.2.2.2.10 Feedforward Network
          11. 8.2.2.2.11 Input Voltage UVLO
        3. 8.2.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Thermal Design and Layout
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 サード・パーティ製品に関する免責事項
      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 ドキュメントの更新通知を受け取る方法
    4. 9.4 サポート・リソース
    5. 9.5 Trademarks
    6. 9.6 静電気放電に関する注意事項
    7. 9.7 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Application Curves

Unless otherwise indicated, VIN = 13.5V, VOUT = 5V, IOUT = 6A, fSW = 2.1MHz, AUTO mode, and TA = 25°C. Figure 8-1 shows the circuit schematic with relevant BOM components specified in Table 8-2.

LM64440-Q1 LM64460-Q1 LM644x0-Q1 EfficiencyFigure 8-3 LM644x0-Q1 Efficiency
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Start-Up,6A Resistive LoadFigure 8-5 LM644x0-Q1 Start-Up,
6A Resistive Load
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Load Transient,IOUT = 3A to 6AFigure 8-7 LM644x0-Q1 Load Transient,
IOUT = 3A to 6A
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Short-Circuit HiccupFigure 8-9 LM644x0-Q1 Short-Circuit Hiccup
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Line
                        Transient and Recovery from DropoutFigure 8-11 LM644x0-Q1 Line Transient and Recovery from Dropout
LM64440-Q1 LM64460-Q1 Thermal Performance, 4A Load
76mm × 38mm, 4-layer PCB
Figure 8-13 Thermal Performance, 4A Load
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Conducted EMI,150kHz to
                        30MHzFigure 8-15 CISPR 25 Class 5 Conducted EMI,
150kHz to 30MHz
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Radiated EMI,Bicon Antenna,
                        Horizontal Polarization,30MHz to
                        200MHzFigure 8-17 CISPR 25 Class 5 Radiated EMI,
Bicon Antenna, Horizontal Polarization,
30MHz to 200MHz
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Radiated EMI,Log Antenna,
                        Horizontal Polarization,200MHz to 1GHzFigure 8-19 CISPR 25 Class 5 Radiated EMI,
Log Antenna, Horizontal Polarization,
200MHz to 1GHz
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Load and Line RegulationFigure 8-4 LM644x0-Q1 Load and Line Regulation
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Enable On and Off,6A Resistive LoadFigure 8-6 LM644x0-Q1 Enable On and Off,
6A Resistive Load
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Load Transient,IOUT = 0A to 6AFigure 8-8 LM644x0-Q1 Load Transient,
IOUT = 0A to 6A
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Short-Circuit Recovery to No
                        LoadFigure 8-10 LM644x0-Q1 Short-Circuit Recovery to No Load
LM64440-Q1 LM64460-Q1 LM644x0-Q1 Frequency Foldback in Dropout,
                            VIN = 3VFigure 8-12 LM644x0-Q1 Frequency Foldback in Dropout, VIN = 3V
LM64440-Q1 LM64460-Q1 Thermal Performance, 6A Load
76mm × 38mm, 4-layer PCB
Figure 8-14 Thermal Performance, 6A Load
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Conducted EMI,30MHz to
                        108MHzFigure 8-16 CISPR 25 Class 5 Conducted EMI,
30MHz to 108MHz
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Radiated EMI,Bicon Antenna,
                        Vertical Polarization,30MHz to 200MHzFigure 8-18 CISPR 25 Class 5 Radiated EMI,
Bicon Antenna, Vertical Polarization,
30MHz to 200MHz
LM64440-Q1 LM64460-Q1 CISPR
                        25 Class 5 Radiated EMI,Log Antenna, Vertical
                            Polarization,200MHz to 1GHzFigure 8-20 CISPR 25 Class 5 Radiated EMI,
Log Antenna, Vertical Polarization,
200MHz to 1GHz