JAJSR90 September   2023 LMQ644A2-Q1

PRODMIX  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
    1. 6.1 Wettable Flanks
  8. 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 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Input Voltage Range (VIN)
      2. 8.3.2  Enable EN Pin and Use as VIN UVLO
      3. 8.3.3  Output Voltage Selection and Soft Start
      4. 8.3.4  SYNC Allows Clock Synchronization and Mode Selection
      5. 8.3.5  Clock Locking
      6. 8.3.6  Adjustable Switching Frequency
      7. 8.3.7  Power-Good Output Voltage Monitoring
      8. 8.3.8  Internal LDO, VCC UVLO, and BIAS Input
      9. 8.3.9  Bootstrap Voltage and VCBOOT-UVLO (CB1 and CB2 Pin)
      10. 8.3.10 CONFIG Device Configuration Pin
      11. 8.3.11 Spread Spectrum
      12. 8.3.12 Soft Start and Recovery From Dropout
      13. 8.3.13 Overcurrent and Short-Circuit Protection
      14. 8.3.14 Hiccup
      15. 8.3.15 Thermal Shutdown
    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 Peak Current Mode Operation
        2. 8.4.3.2 Auto Mode Operation
          1. 8.4.3.2.1 Diode Emulation
        3. 8.4.3.3 FPWM Mode Operation
        4. 8.4.3.4 Minimum On-time (High Input Voltage) Operation
        5. 8.4.3.5 Dropout
        6. 8.4.3.6 Recovery from Dropout
        7. 8.4.3.7 Other Fault Modes
  10. 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
        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  BOOT Capacitor
        7. 9.2.2.7  VCC
        8. 9.2.2.8  CFF and RFF Selection
        9. 9.2.2.9  SYNCHRONIZATION AND MODE
        10. 9.2.2.10 External UVLO
        11. 9.2.2.11 Typical Thermal Performance
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Ground and Thermal Considerations
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 サード・パーティ製品に関する免責事項
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 用語集
    6. 10.6 静電気放電に関する注意事項
  12. 11Mechanical, 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

9.2.3 Application Curves

Unless otherwise specified, the following conditions apply: Device: LMQ644A2, VIN = 13.5 V, TA = 25°C. The circuit is shown in Figure 9-1, and Figure 9-2 with the appropriate BOM from Table 9-7.

GUID-20230714-SS0I-DC0Z-XWLH-08L8PN3MRHPL-low.svg
VOUT = 5 V FSW = 400 kHz Auto mode Single Output
Figure 9-9 Efficiency
GUID-20230714-SS0I-TQGP-Q0S8-LJLXM1P3PKSX-low.svg
VOUT = 5 V FSW = 400 kHz FPWM mode Single Output
Figure 9-11 Efficiency
GUID-20230714-SS0I-ZPLP-LNJF-JWCD7VNTS9VB-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode Single Output
Figure 9-13 Efficiency
GUID-20230714-SS0I-GCPR-D0BK-LQZXLVH9MD5S-low.svg
VOUT = 5 V FSW = 2.1 MHz Auto mode Single Output
Figure 9-15 Efficiency
GUID-20230714-SS0I-SNBT-9RCK-B99HW6BKKWBR-low.svg
VOUT = 5 V FSW = 2.1 MHz FPWM mode Single Output
Figure 9-17 Efficiency
GUID-20230714-SS0I-2VHD-QL3F-7FRRSZVTSLFK-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Single Output
Figure 9-19 Efficiency
GUID-20230714-SS0I-BZ0L-7Z5Q-WBHGMJGHMLRW-low.svg
VOUT = 5 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-21 Efficiency
GUID-20230714-SS0I-KGHH-S5NK-NW7KQSKLJV7F-low.svg
VOUT = 5 V FSW = 2.1 MHz FPWM mode Dual Output
Figure 9-23 Efficiency
GUID-20230714-SS0I-HXQM-WJ5J-LXTHMBXLXDRP-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-25 Efficiency
GUID-20230717-SS0I-2MCS-HQQJ-S6HDM0SHX8BF-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode Single Output
Figure 9-27 Load and Line Regulation
GUID-20230717-SS0I-4Z23-0MZ9-C265SF5WMP82-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode Dual Output
Figure 9-29 Load and Line Regulation
GUID-20230717-SS0I-WBLC-ZHXB-VWDWMFMPB2TR-low.svg
VOUT = 5 V FSW = 2.1 MHz FPWM mode Dual Output
Figure 9-31 Load and Line Regulation
GUID-20230717-SS0I-FQDH-BJVG-Q0SXX4K7R9LL-low.svg
VOUT = 5 V FSW = 400 kHz FPWM mode Single Output
Figure 9-33 Dropout
GUID-20230717-SS0I-X8SW-45QP-CMK1DKTKTQT0-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode Single Output
Figure 9-35 Dropout
GUID-20230714-SS0I-JR8P-SKPQ-XD3J3JTWVTKK-low.svg
VOUT = 5 V FSW = 400 kHz Auto mode
IOUT = 3 A VIN = 5 to 7 V Single Output
Figure 9-37 Dropout Recovery
GUID-20230714-SS0I-LTPL-SZFB-WN9SKQDHDGNX-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 100 mA VIN = 13.5 V Dual Output
Figure 9-39 Start-Up With 100-mA Load
GUID-20230714-SS0I-F4VT-KK0B-RXTW4WBCL9HV-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = 0 A to Short Circuit VIN = 13.5 V Single Output
Figure 9-41 Short-Circuit Protection
GUID-20230714-SS0I-HM66-JZPD-V3LBWTDKMRS8-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = Short Circuit to 0 A VIN = 13.5 V Single Output
Figure 9-43 Short-Circuit Hiccup
GUID-20230714-SS0I-GB0H-L3CV-WTZ1ZXQTTQBS-low.svg
VOUT = 5 V FSW = 2.1 MHz FPWM mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-45 Load Transient
GUID-20230714-SS0I-59Q3-QCLB-KDDCCH9ZXG0B-low.svg
VOUT = 5 V FSW = 400 kHz Auto mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-47 Load Transient
GUID-20230714-SS0I-4LV2-C8BJ-0DJBKBL7K4GK-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-49 Load Transient
GUID-20230714-SS0I-HPXQ-46TK-RBV3V3JFKTCW-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode
IOUT = 3 A to 6 A to 3 A VIN = 13.5 V Dual Output
Figure 9-51 Load Transient
GUID-20230714-SS0I-DGKW-ZCCD-NSVGJ3ZLPH22-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-53 Load Transient
GUID-20230714-SS0I-4M8F-H8RL-W4GWCTZGNKPW-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 4 A to 12 A to 4 A VIN = 13.5 V Single Output
Figure 9-55 Load Transient
GUID-20230714-SS0I-SCJC-BWVR-MWLBWQXMWXC8-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 150 kHz to 30 MHz
Figure 9-57 Single Output Monopole Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-H677-MTW4-SPHX9BKS38KZ-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 200 MHz to 1000 MHz
Figure 9-59 Single Output Log Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-69JS-S2CX-NZDJL6RZGD8F-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 150 kHz to 30 MHz
Figure 9-61 Single Output Conducted Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-Z8RR-WTF6-T9TRQMT2FNGS-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 150 kHz to 30 MHz
Figure 9-63 Dual Output Monopole Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-7HPF-ZDRL-7TSXGD4QSRZT-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 200 MHz to 1000 MHz
Figure 9-65 Dual Output Log Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-JKNN-KNRQ-Q8V99JF1ZVWS-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 150 kHz to 30 MHz
Figure 9-67 Dual Output Conducted Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230825-SS0I-5PF3-WF34-3QRS0MTCX2RC-low.svg
Figure 9-69 Recommended Input EMI Filter
GUID-20230714-SS0I-H6JP-TR6L-SXMJDKRN3JP7-low.svg
VOUT = 5 V FSW = 400 kHz Auto mode Single Output
Figure 9-10 Efficiency
GUID-20230714-SS0I-3J85-VCST-4Z379S6V1DD2-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode Single Output
Figure 9-12 Efficiency
GUID-20230714-SS0I-SNTG-3FTG-SMP7BZQCHCXV-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode Single Output
Figure 9-14 Efficiency
GUID-20230714-SS0I-TMKS-KGX6-XM4XCHSFQPV4-low.svg
VOUT = 5 V FSW = 2.1 MHz Auto mode Single Output
Figure 9-16 Efficiency
GUID-20230714-SS0I-30MW-43LN-N3R8KXC8D3PP-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Single Output
Figure 9-18 Efficiency
GUID-20230714-SS0I-FKL5-JH6C-7L9BQWFMNNCB-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode Single Output
Figure 9-20 Efficiency
GUID-20230714-SS0I-JD5L-1PZP-XVXNSF67JPQ0-low.svg
VOUT = 5 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-22 Efficiency
GUID-20230714-SS0I-B6LL-9WS3-GKNX9X2QVGTX-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-24 Efficiency
GUID-20230714-SS0I-BMHJ-XTHQ-HKWG818GR0TB-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode Dual Output
Figure 9-26 Efficiency
GUID-20230717-SS0I-2K46-JRD2-1XLHFKG0QL40-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Single Output
Figure 9-28 Load and Line Regulation
GUID-20230717-SS0I-XCS7-KNDT-HNKBDCS3GZKD-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-30 Load and Line Regulation
GUID-20230717-SS0I-ZKHZ-QFK3-K6PZWBHNZWHN-low.svg
VOUT = 5 V FSW = 2.1 MHz Auto mode Dual Output
Figure 9-32 Load and Line Regulation
GUID-20230717-SS0I-SHPN-KNXL-X4Z07CRV7TCR-low.svg
VOUT = 5 V FSW = 2.1 MHz FPWM mode Single Output
Figure 9-34 Dropout
GUID-20230717-SS0I-V1FW-CKB1-QCTC3HFTZQLR-low.svg
VOUT = 3.3 V FSW = 2.1 MHz FPWM mode Single Output
Figure 9-36 Dropout
GUID-20230714-SS0I-Q44J-TKWB-6JV6L38WSVQ3-low.svg
VOUT = 5 V FSW = 400 kHz FPWM mode
IOUT = 100 mA VIN = 13.5 V Dual Output
Figure 9-38 Start-Up With 100-mA Load
GUID-20230714-SS0I-L85S-SJJL-1LPWCHD1TH74-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 12 A VIN = 13.5 V Single Output
Figure 9-40 Start-Up With 12-A Load
GUID-20230714-SS0I-ZBQM-8B83-2PQSXT9FMGQP-low.svg
VOUT1 = 3.3 V FSW = 400 kHz Auto mode
IOUT = 0 A to Short Circuit VIN = 13.5 V Dual Output
Figure 9-42 Short-Circuit Protection
GUID-20230714-SS0I-QPCM-XVZN-PFCHDKPMR92Z-low.svg
VOUT = 3.3 V FSW = 400 kHz Auto mode
IOUT = Short Circuit to 0 A VIN = 13.5 V Dual Output
Figure 9-44 Short-Circuit Hiccup
GUID-20230714-SS0I-P7C0-6CHL-NFPHX7VGKS75-low.svg
VOUT = 5 V FSW = 400 kHz FPWM mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-46 Load Transient
GUID-20230714-SS0I-HTHP-XMNT-RWCWLZ5DWHPL-low.svg
VOUT = 5 V FSW = 400 kHz FPWM mode
IOUT = 3 A to 6 A to 3 A VIN = 13.5 V Dual Output
Figure 9-48 Load Transient
GUID-20230714-SS0I-DDVV-VM4V-NQBPMXVKF9JR-low.svg
VOUT = 3.3 V FSW = 2.1 MHz Auto mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-50 Load Transient
GUID-20230714-SS0I-LPMX-X642-S2DDMLFFPPZ6-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 100 mA to 6 A to 100 mA VIN = 13.5 V Dual Output
Figure 9-52 Load Transient
GUID-20230714-SS0I-5X6Q-HFSX-MHMKDKMM3LNJ-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 3 A to 6 A to 3 A VIN = 13.5 V Dual Output
Figure 9-54 Load Transient
GUID-20230714-SS0I-9SZZ-BSQS-PFMZLZW8NPC3-low.svg
VOUT = 3.3 V FSW = 400 kHz FPWM mode
IOUT = 6 A to 12 A to 4 A VIN = 13.5 V Single Output
Figure 9-56 Load Transient
GUID-20230714-SS0I-WC3K-FTMF-HBZ3MC4PTGPM-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 30 MHz to 200 MHz
Figure 9-58 Single Output Bicon Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-1Q2B-ZP8Q-FVDKDNDP6SCG-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 1000 MHz to 2500 MHz
Figure 9-60 Single Output Horn Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-GCNR-C8FV-VMR7JLVB0XMT-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 30 MHz to 108 MHz
Figure 9-62 Single Output Conducted Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-XJJF-CLGG-RHZGXCT0T47P-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 30 MHz to 200 MHz
Figure 9-64 Dual Output Bicon Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-0NFW-9MG1-MCPBCNJ4SBB7-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 1000 MHz to 2500 MHz
Figure 9-66 Dual Output Horn Radiated Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
GUID-20230714-SS0I-KMVL-95QC-HVJHSMJMXPGC-low.png
VOUT = 3.3 V FSW = 2100 kHz IOUT = 12 A
Frequency Tested: 30 MHz to 108 MHz
Figure 9-68 Dual Output Conducted Emissions versus CISPR25 Class 5 Limits (Orange: Peak Signal, Red: Average Signal, Green: Quasi-Peak Signal)
Table 9-3 BOM for Typical Application Curves
VOUT FREQUENCY RFBB COUT EACH PHASE CIN + CHF EACH PHASE L CFFFOR ADJUSTABLE OUTPUT
3.3 V 400 kHz 32.4 kΩ 47 + 22 µF 2 × 10 µF + 1 × 100 nF 2.8 µH 10 pF
3.3 V 2200 kHz 32.4 kΩ 47 + 22 µF 2 × 10 µF + 1 × 100 nF 1 µH 10 pF
5 V 400 kHz 19.1 kΩ 47 + 22 µF 2 × 10 µF + 1 × 100 nF 2.8 µH 10 pF
5 V 2200 kHz 19.1 kΩ 47 + 22 µF 2 × 10 µF + 1 × 100 nF 1 µH 10 pF