SLVSB38C March   2011  – August 2016 TPS62242-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  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 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Lockout
      2. 8.3.2 Enable
      3. 8.3.3 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Soft Start
      2. 8.4.2 Power Save Mode
        1. 8.4.2.1 100% Duty Cycle Low Dropout Operation
      3. 8.4.3 Short-Circuit Protection
  9. 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 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.1.1 Inductor Selection
          2. 9.2.2.1.2 Output Capacitor Selection
          3. 9.2.2.1.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Third-Party Products Disclaimer
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 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

4 Revision History

Changes from B Revision (March 2013) to C Revision

  • Added ESD Ratings table, Thermal Information 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
  • Deleted Ordering Information table; see POA at the end of the data sheetGo
  • Changed document title and description from "Step-Down" to "Buck Converter"Go
  • Changed from "Greater Than" to "Up to"Go
  • Changed Features and Applications bullets editorially Go
  • Changed description to automotive applications Go
  • Deleted duplicated information Go
  • Added 2.25-MHz fixed frequency and a 1.2-V fixed output voltageGo
  • Added PWM mode descriptionGo
  • Added Free-air temperature range and reworded device package description. Go
  • Changed figure for VO = 1.2 V curves Go
  • Updated pinout image to new formatGo
  • Deleted table note 3 about human body model and machine modelGo
  • Deleted table row for adjustable voltageGo
  • Added table rows for inductance and output capacitanceGo
  • Added PWM Mode Go
  • Deleted in fixed output voltage versions from table noteGo
  • Deleted Dissipation Ratings sectionGo
  • Moved Figures 2, 6 through 9, and 11 through 13 to Application CurvesGo
  • Changed Figures 6 through 9 and 11 through 13 for 1.2 VGo
  • Deleted Figures 1, 3 through 5, 10, 14, and 15 Go
  • Deleted Mode transition row from table and corresponding figures 14 and 15Go
  • Moved Soft Start, Power Save Mode, and Short-Circuit Protection sections to Device Functional Modes sectionGo

Changes from A Revision (March 2012) to B Revision

  • Changed C3B to C4B in FeaturesGo
  • Changed bullet point in Features list from "Adjustable Output Voltage from 0.6 V to Vin" to "1.2 V Fixed Output Voltage"Go
  • Added Output column for fixed voltage to Ordering Information table.Go
  • Changed C3B to C4BGo
  • Changed "Ta = 115°C" to "Ta = –40°C°C to 115°C" in all instances in the electrical characteristics tableGo
  • Added "Ta = 25°C" to following parameters listed in the electrical characteristics table: "Shutdown current," "Low level input voltage," "Feedback voltage," and "Leakage current into SW pin"Go
  • Added 2 V ≤ VIN ≤ 6 V to VIL test conditions.Go
  • Added VIN = VGS = 3.6 V to ILIMF test conditions.Go
  • Changed min and typ values for VREF from 0.594 to 594 and 0.606 to 606, respectively. Go
  • Added PWM operation, 2 V ≤ VIN ≤ 6 V, in fixed output voltage versions VFB = VOUT, See (2) to the VFB test conditions.Go
  • Added VIN = 3.6 V, VIN = VOUT = VSW, EN = GND,(3), to the Ilkg test conditions.Go
  • Changed the junction temperature in the thermal shutdown detail from "TBD" to "150°C"Go
  • Added missing parentheses to equation.Go