JAJSKO7D October   2020  – March 2022 LMR43610-Q1 , LMR43620-Q1

PRODUCTION DATA  

  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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 System Characteristics
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Enable, Start-Up, and Shutdown
      2. 8.3.2  External CLK SYNC (with MODE/SYNC)
        1. 8.3.2.1 Pulse-Dependent MODE/SYNC Pin Control
      3. 8.3.3  Adjustable Switching Frequency (with RT)
      4. 8.3.4  Power-Good Output Operation
      5. 8.3.5  Internal LDO, VCC, and VOUT/FB Input
      6. 8.3.6  Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      7. 8.3.7  Output Voltage Selection
      8. 8.3.8  Spread Spectrum
      9. 8.3.9  Soft Start and Recovery from Dropout
        1. 8.3.9.1 Recovery from Dropout
      10. 8.3.10 Current Limit and Short Circuit
      11. 8.3.11 Thermal Shutdown
      12. 8.3.12 Input Supply Current
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
        1. 8.4.3.1 CCM Mode
        2. 8.4.3.2 Auto Mode – Light-Load Operation
          1. 8.4.3.2.1 Diode Emulation
          2. 8.4.3.2.2 Frequency Reduction
        3. 8.4.3.3 FPWM Mode – Light-Load Operation
        4. 8.4.3.4 Minimum On-Time (High Input Voltage) Operation
        5. 8.4.3.5 Dropout
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Choosing the Switching Frequency
        2. 9.2.2.2  Setting the Output Voltage
          1. 9.2.2.2.1 FB for Adjustable Output
        3. 9.2.2.3  Inductor Selection
        4. 9.2.2.4  Output Capacitor Selection
        5. 9.2.2.5  Input Capacitor Selection
        6. 9.2.2.6  CBOOT
        7. 9.2.2.7  VCC
        8. 9.2.2.8  CFF Selection
        9. 9.2.2.9  External UVLO
        10. 9.2.2.10 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
    3. 9.3 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Ground and Thermal Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 サポート・リソース
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable 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 specified the following conditions apply: VIN = 12 V, TA = 25°C.
Unless otherwise specified the following conditions apply: VIN = 12 V, TA = 25°C.
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
Fixed
Figure 9-3 Efficiency. Unless otherwise specified the following conditions apply: VIN = 12 V, TA = 25°C.
LMR43610MSC5 VOUT = 5 V 2.2 MHz (AUTO)
Fixed
Figure 9-5 Efficiency
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
Fixed
Figure 9-7 Dropout
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
Fixed
Figure 9-9 Line and Load Regulation
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
Fixed
Figure 9-11 Input Switching Current vs. Input Voltage
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
0 A to 2 A,1 A/µs Fixed
Figure 9-13 Load Transient
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (FPWM)
0 A to 1 A,1 A/µs Fixed
Figure 9-15 Load Transient
LMR43610MSC5 VOUT = 5 V 2.2 MHz (FPWM)
0 A to 1 A,1 A/µs Fixed
Figure 9-17 Load Transient
LMR43620MSC3 VOUT = 3.3 V 2 A Load
Fixed
Figure 9-19 Output Voltage Ripple
LMR43620MSC3 VOUT = 3.3 V 36 VIN, 2 A, 2.2 MHz
Fixed
Figure 9-21 EVM Thermal Performance
VIN = 13.5 V VOUT = 3.3 V Fsw = 2.2 MHz
Load = 2 A
Figure 9-23 Typical CISPR 25 Conducted EMI 150 kHz–30 MHz Yellow: Peak Detect, Blue = Average Detect
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (FPWM)
Fixed
Figure 9-4 Efficiency
LMR43610MSC5 VOUT = 5 V 2.2 MHz (FPWM)
Fixed
Figure 9-6 Efficiency
LMR43610MSC5 VOUT = 5 V 2.2 MHz (AUTO)
Fixed
Figure 9-8 Dropout
LMR43610MSC5 VOUT = 5 V 2.2 MHz (AUTO)
Fixed
Figure 9-10 Line and Load Regulation
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
Fixed
Figure 9-12 Input Current vs. Load Current
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
0.5 A to 1.5 A,1 A/µs Fixed
Figure 9-14 Load Transient
LMR43620MSC3 VOUT = 3.3 V 2.2 MHz (AUTO)
0 A to 1 A,1 A/µs Fixed
Figure 9-16 Load Transient
LMR43610MSC5 VOUT = 5 V 2.2 MHz (AUTO)
0 A to 1 A,1 A/µs Fixed
Figure 9-18 Load Transient
LMR43620MSC3 VOUT = 3.3 V No Load
Fixed
Figure 9-20 Output Voltage Ripple
LMR43620MSC3 VOUT = 3.3 V 12 VIN, 2 A, 2.2 MHz
Fixed
Figure 9-22 EVM Thermal Performance
VIN = 13.5 V VOUT = 3.3 V Fsw = 2.2 MHz
Load = 2 A
Figure 9-24 Typical CISPR 25 Conducted EMI 30 MHz–108 MHz Yellow: Peak Detect, Blue = Average Detect
Ferrite Bead Part Number: FBMH3225HM601NT
Figure 9-25 Typical Input EMI Filter
Figure 9-26 Schematic for Typical Application Curves
Table 9-5 BOM for Typical Application Curves
U1 ƒSW VOUT L NOMINAL COUT
(RATED CAPACITANCE)
RFBT RFBB CFF
LMR43620MSC3RPERQ1 2200 kHz 3.3 V Fixed 3.3 µH 26 mΩ 2 × 22 µF 0 Ω DNP DNP