JAJSJZ0C may   2020  – april 2023 TPS543320

PRODUCTION DATA  

  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 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  VIN Pins and VIN UVLO
      2. 7.3.2  Enable and Adjustable UVLO
      3. 7.3.3  Adjusting the Output Voltage
      4. 7.3.4  Switching Frequency Selection
      5. 7.3.5  Switching Frequency Synchronization to an External Clock
        1. 7.3.5.1 Internal PWM Oscillator Frequency
        2. 7.3.5.2 Loss of Synchronization
        3. 7.3.5.3 Interfacing the SYNC/FSEL Pin
      6. 7.3.6  Ramp Amplitude Selection
      7. 7.3.7  Soft Start and Prebiased Output Start-Up
      8. 7.3.8  Mode Pin
      9. 7.3.9  Power Good (PGOOD)
      10. 7.3.10 Current Protection
        1. 7.3.10.1 Positive Inductor Current Protection
        2. 7.3.10.2 Negative Inductor Current Protection
      11. 7.3.11 Output Overvoltage and Undervoltage Protection
      12. 7.3.12 Overtemperature Protection
      13. 7.3.13 Output Voltage Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Forced Continuous-Conduction Mode
      2. 7.4.2 Discontinuous Conduction Mode During Soft Start
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 3.3-V Output, 1.0-MHz Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Switching Frequency
          2. 8.2.1.2.2  Output Inductor Selection
          3. 8.2.1.2.3  Output Capacitor
          4. 8.2.1.2.4  Input Capacitor
          5. 8.2.1.2.5  Adjustable Undervoltage Lockout
          6. 8.2.1.2.6  Output Voltage Resistors Selection
          7. 8.2.1.2.7  Bootstrap Capacitor Selection
          8. 8.2.1.2.8  BP5 Capacitor Selection
          9. 8.2.1.2.9  PGOOD Pullup Resistor
          10. 8.2.1.2.10 Current Limit Selection
          11. 8.2.1.2.11 Soft-Start Time Selection
          12. 8.2.1.2.12 Ramp Selection and Control Loop Stability
          13. 8.2.1.2.13 MODE Pin
        3. 8.2.1.3 Application Curves
      2. 8.2.2 1.8-V Output, 1.5-MHz Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 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. 9.2 ドキュメントの更新通知を受け取る方法
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 静電気放電に関する注意事項
    6. 9.6 用語集
  11. 10Mechanical, 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

8.2.1.3 Application Curves

GUID-20201208-CA0I-P2ZT-KCJH-03KG7NWQMG51-low.gifFigure 8-4 Efficiency
GUID-20201130-CA0I-SC6P-GCR3-3X44RLKDMQM5-low.gif
Figure 8-6 Line Regulation
GUID-20201130-CA0I-K13J-S6DZ-5ZTHN5XNLFX6-low.png
VIN = 12 V IOUT(DC) = 0.75 A ISTEP = 1.5 A at 1A/µs
Figure 8-8 Load Transient
GUID-20201130-CA0I-GS6J-BSLH-QZHDRLNXSRPD-low.png
VIN = 12 V IOUT = 0 A
Figure 8-10 EN Startup – Measuring SW
GUID-20201130-CA0I-MK0Z-RWT0-GH75VQNZKZJB-low.png
IOUT = 1.5 A
Figure 8-12 VIN Start-up
GUID-20201130-CA0I-MLLW-TM70-XPVQPKG41SGZ-low.png
VIN = 12 V IOUT = 0 A
Figure 8-14 Output Ripple – No Load
GUID-20201130-CA0I-NX0D-PFGT-Z9V4LSK31KDN-low.png
VIN = 12 V IOUT = 0 A
Figure 8-16 Input Ripple – No Load
GUID-20201130-CA0I-FT4S-CH06-B4WPPHKZJXVV-low.png
VIN = 12 V
Figure 8-18 Overcurrent Protection – Overload
GUID-20201130-CA0I-NRBB-GJW7-DSHS7W5HCB5B-low.png
VIN = 12 V
Figure 8-20 Overcurrent Protection – Hiccup and Recover
GUID-20201130-CA0I-8331-1HCK-QVZV9BQGFKX0-low.gif
Figure 8-5 Load Regulation
GUID-20201130-CA0I-LRKJ-GFB5-2N9JRBJSPBZ4-low.gif
VIN = 12 V ROUT = 1.32 Ω
Figure 8-7 Bode Plot
GUID-20201130-CA0I-KZ9B-3PX5-GJ8T5TN9PNTJ-low.png
VIN = 12 V IOUT = 0 A
Figure 8-9 EN Start-up – Measuring BP5
GUID-20201130-CA0I-L5M4-7RVM-RFXTZ84T6RTB-low.png
VIN = 12 V IOUT = 0 A
Figure 8-11 EN Shutdown
GUID-20201130-CA0I-M47L-GSDF-RP0DJGMXCXDX-low.png
IOUT = 1.5 A
Figure 8-13 VIN Shutdown
GUID-20201130-CA0I-VMFR-CWVN-CFKCF9PJ8ZSW-low.png
VIN = 12 V IOUT = 3 A
Figure 8-15 Output Ripple – 3-A Load
GUID-20201130-CA0I-LX8N-C5MP-3F9BTPDCD6VR-low.png
VIN = 12 V IOUT = 3 A
Figure 8-17 Input Ripple – 3-A Load
GUID-20201130-CA0I-TKBR-91ZH-VC2BXJG7HS3X-low.png
VIN = 12 V
Figure 8-19 Overcurrent Protection – Short