JAJS204R December   2005  – April 2017 TPS74401

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 改訂履歴
  5. 5 Pin Configuration and 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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable, Shutdown
      2. 7.3.2 Power-Good (VQFN Package Only)
      3. 7.3.3 Internal Current Limit
      4. 7.3.4 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Disabled
    5. 7.5 Programming
      1. 7.5.1 Programmable Soft-Start
      2. 7.5.2 Sequencing Requirements
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Input, Output, and Bias Capacitor Requirements
      2. 8.1.2 Transient Response
      3. 8.1.3 Dropout Voltage
      4. 8.1.4 Output Noise
    2. 8.2 Typical Applications
      1. 8.2.1 Setting the TPS74401
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Using an Auxiliary Bias Rail
      3. 8.2.3 Without an Auxiliary Bias
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation
    4. 10.4 Thermal Considerations
  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 開発サポート
        1. 11.1.1.1 評価モジュール
        2. 11.1.1.2 SPICEモデル
    2. 11.2 ドキュメントのサポート
      1. 11.2.1 関連資料
    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

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

4 改訂履歴

Changes from Q Revision (April 2015) to R Revision

  • Added ドキュメントにRGRパッケージをGo
  • Changed ドキュメント全体を通してTPS744xxをTPS74401へGo
  • Changed 「特長」の「パッケージ」箇条書きをGo
  • Changed 「概要」セクションの2番目の段落にRGRパッケージを追加し、最後から2番目の文をGo
  • Deleted 「代表的なアプリケーション回路」図の固定電圧バージョンをGo
  • Added RGR package to Pin Configuration and Functions section Go
  • Changed FB/SNS to FB in both pin out drawings, deleted TPS744xx from VQFN package Go
  • Changed Surface Mount to Top View in KTW pin out drawingGo
  • Changed input capacitor to bias capacitor in BIAS pin description Go
  • Deleted (adjustable version only) from description of FB pin in Pin Functions table Go
  • Changed I/O column value to — from O for NC pins of Pin Functions table Go
  • Deleted SNS pin from Pin Functions table Go
  • Added RGR package to Thermal Information table Go
  • Deleted (adjustable version) from VREF parameter name in Electrical Characteristics table Go
  • Deleted SNS pin reference from IFB, ISNS parameter: changed symbol from IFB, ISNS to IFB, deleted sense from parameter nameGo
  • Deleted adjustable from footnote 1 and deleted ISNS from footnote 4 of Electrical Characteristics table Go
  • Changed conditions of R1, R2 in Noise Spectral Density figureGo
  • Deleted Fixed Voltage Versions figure from Functional Block Diagram sectionGo
  • Changed first paragraph of Application Information section: deleted and tracking capabilities from first sentence and changed very low input and output voltages to very low output voltages with low VIN to VOUT headroom in last sentenceGo
  • Changed title of first typical application from Adjustable Voltage Part and Setting to Setting the TPS74401Go
  • Deleted reference to adjustable version in first sentence and Typical Application Circuit for the TPS74401 figure in first typical application sectionGo
  • Changed Because VIN ≥ VOUT + 1.62 V to Because VIN is less than VOUT plus the VBIAS dropout and VBIAS = VIN to VBIAS = VOUT in last paragraph of Detailed Design Procedure in first typical application sectionGo
  • Deleted Fixed Voltage and Sense Pin sectionGo
  • Deleted BIAS recommendation from Layout Guidelines sectionGo
  • Changed RGW Package to VQFN Packages in caption of Layout Schematic figureGo
  • Added RGR package to VQFN description in Power Dissipation sectionGo
  • Added RGR package to Thermal Considerations section Go

Changes from P Revision (January 2015) to Q Revision

  • ドキュメント全体を通してQFNをVQFNに変更Go
  • ドキュメント全体を通してTPS744xxをTPS74401に変更Go
  • 「特長」から固定出力の箇条書きを削除Go
  • Changed VBIAS minimum value in Recommended Operating Conditions tableGo
  • Changed footnote 1 for Recommended Operating Conditions tableGo
  • Added second row to VOUT accuracy parameter Go
  • Added last four rows to VDO, VBIAS dropout voltage parameterGo
  • Added Timing Requirements tableGo
  • Added Device Functional Modes sectionGo
  • Changed third paragraph of Dropout VoltageGo
  • Changed first sentence of Without an Auxiliary Bias sectionGo
  • Changed Power Dissipation section location; moved to after Layout Example sectionGo
  • Added 「開発サポート」セクションGo
  • Added リファレンス・デザインTIDU421とユーザー・ガイドSLVU143についての情報を「関連資料」セクションにGo

Changes from O Revision (March 2013) to P Revision

  • Deleted 「特長」の一覧からアクティブHIGHイネーブルの箇条書き項目をGo
  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
  • Changed footnote 3c for Thermal Information table Go
  • Changed y-axis in Figure 1, Figure 2, Figure 4, and Figure 7 from abbreviation (IOUT) to text (Output Current) Go
  • Added "V" to VIN = 1.8 V condition in Figure 9, Figure 10, and Figure 11 Go
  • y-axis and graph title in Figure 15 from abbreviation (IOUT) to text (Output Current) Go
  • Changed Figure 25; made VOUT trace red to show data trend separation Go
  • Changed Overview section textGo
  • Changed second paragraph of Dropout Voltage Go
  • Changed Figure 27; updated equation in figure Go

Changes from N Revision (December 2012) to O Revision

  • Changed RGW and KTW values in Thermal Information tableGo

Changes from M Revision (November 2010) to N Revision

  • Changed TJ max value from 125 to 150 in Absolute Maximum Ratings tableGo

Changes from L Revision (August, 2010) to M Revision

Changes from K Revision (December, 2009) to L Revision

  • Replaced the Dissipation Ratings table with the Thermal Information tableGo
  • Revised Layout Recommendations and Power Dissipation sectionGo
  • Revised Thermal Considerations sectionGo