JAJSEJ4C January   2018  – July 2018 TPSM84209

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      アプリケーション概略図
      2.      効率と出力電流との関係
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 (VIN = 5 V)
    7. 6.7 Typical Characteristics (VIN = 12 V)
    8. 6.8 Typical Characteristics (VIN = 24 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Adjusting the Output Voltage
      2. 7.3.2  Input Capacitor Selection
      3. 7.3.3  Undervoltage Lockout (UVLO)
      4. 7.3.4  Output Capacitor Selection
      5. 7.3.5  Feed-Forward Capacitor
      6. 7.3.6  Operating Range
      7. 7.3.7  Output Current Rating
      8. 7.3.8  Enable (EN)
      9. 7.3.9  Internal Soft Start
      10. 7.3.10 Safe Start-Up Into Prebiased Outputs
      11. 7.3.11 Light Load Efficiency / Eco-Mode
      12. 7.3.12 Voltage Dropout
      13. 7.3.13 Overcurrent Protection
      14. 7.3.14 Output Overvoltage Protection (OVP)
      15. 7.3.15 Thermal Performance
      16. 7.3.16 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active Mode
      2. 7.4.2 Eco-Mode Operation
      3. 7.4.3 Shutdown Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Setpoint
        3. 8.2.2.3 Input Capacitors
        4. 8.2.2.4 Output Capacitors
        5. 8.2.2.5 Enable Control
      3. 8.2.3 Application Waveforms
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 EMI
      1. 10.3.1 EMI Plots
    4. 10.4 Package Specifications
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 デバイス・サポート
      1. 11.1.1 デベロッパー・ネットワークの製品に関する免責事項
    2. 11.2 WEBENCH®ツールによるカスタム設計
    3. 11.3 ドキュメントの更新通知を受け取る方法
    4. 11.4 コミュニティ・リソース
    5. 11.5 商標
    6. 11.6 静電気放電に関する注意事項
    7. 11.7 Glossary
  12. 12メカニカル、パッケージ、および注文情報
    1. 12.1 Tape and Reel Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • RKH|9
サーマルパッド・メカニカル・データ
発注情報

7.3.1 Adjusting the Output Voltage

A resistor divider connected to the FB pin (pin 1) programs the output voltage of the TPSM84209. The output voltage adjustment range is from 1.2 V to 6 V. Figure 17 shows the feedback resistor connection for setting the output voltage. The recommended value of RFBT is 10 kΩ. Table 1 lists the closest standard E96 value for the RFBB resistor for a number of common output voltages. For other output voltages, the value of the required RFFB resistor can be calculated using Equation 1.

Equation 1. TPSM84209 SDRfbbEq.gif
TPSM84209 FBresistorDivNoCFF.gifFigure 17. Setting the Output Voltage

Table 1. Standard RFBB Resistor Values

VOUT (V) RFBB (kΩ) VOUT (V) RFBB (kΩ)
1.2 10.0 3.7 1.96
1.3 8.45 3.8 1.87
1.4 7.50 3.9 1.82
1.5 6.65 4.0 1.74
1.6 6.04 4.1 1.69
1.7 5.36 4.2 1.65
1.8 4.99 4.3 1.62
1.9 4.64 4.4 1.58
2.0 4.22 4.5 1.54
2.1 4.02 4.6 1.50
2.2 3.74 4.7 1.47
2.3 3.48 4.8 1.43
2.4 3.32 4.9 1.40
2.5 3.16 5.0 1.37
2.6 3.01 5.1 1.33
2.7 2.87 5.2 1.30
2.8 2.74 5.3 1.27
2.9 2.61 5.4 1.24
3.0 2.49 5.5 1.22
3.1 2.37 5.6 1.20
3.2 2.32 5.7 1.18
3.3 2.21 5.8 1.15
3.4 2.15 5.9 1.13
3.5 2.05 6.0 1.10
3.6 2.00