SLVS038J January   1989  – October 2024 TL2842 , TL2843 , TL2844 , TL2845 , TL3842 , TL3843 , TL3844 , TL3845

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Pulse-by-Pulse Current Limiting
      2. 6.3.2 Error Amplifier With Low Output Resistance
      3. 6.3.3 High-Current Totem-Pole Output
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Technique
      2. 6.4.2 Slope Compensation
  8. 7 Application and Implementation
    1. 7.1 Typical Application
      1. 7.1.1 Design Requirements
      2. 7.1.2 Detailed Design Procedure
        1. 7.1.2.1 Current-Sense Circuit
        2. 7.1.2.2 Error-Amplifier Configuration
        3. 7.1.2.3 Oscillator Section
      3. 7.1.3 Application Curve
    2. 7.2 Power Supply Recommendations
    3. 7.3 Layout
      1. 7.3.1 Layout Guidelines
        1. 7.3.1.1 Feedback Traces
        2. 7.3.1.2 Input/Output Capacitors
        3. 7.3.1.3 Compensation Components
        4. 7.3.1.4 Traces and Ground Planes
      2. 7.3.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • D|8
  • P|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Revision History

Changes from Revision I (July 2016) to Revision J (October 2024)

  • Updated the numbering format for tables, figures, and cross-references throughout the documentGo
  • Changed ESD ratings, CDM rating from ±3000V to ±2000V.Go
  • Changed thermal information for D-8, D-14, and P-8 packagesGo
  • Changed the OUTPUT SECTION: Rise and fall time, typical value from 50ns to 25ns in the Electrical Characteristics sectionGo
  • Changed the PWM: maximum duty cycle of TLx842/3B, minimum value from 95% to 92% in the Electrical Characteristics sectionGo
  • Changed the TOTAL STANDBY CURRENT, VCC Zener voltage, typical value from 34V to 39V in the Electrical Characteristics sectionGo
  • Updated the Typical Characteristics graphs for Idischarge vs Ta, Maximum Duty Cycle vs Rt, Deadtime vs Ct, Rt vs frequency, and Ivcc vs VCC Go

Changes from Revision H (January 2015) to Revision I (July 2016)

  • Updated pinout imagesGo
  • Changed TL984x to TL384x in Recommended Operating Conditions Go
  • Changed TLx842, TLx844 to TLx842, TLx843 and TLx843, TLx845 to TLx844, TLx845 in Pulse-Width-Modulator Section Go
  • Added Receiving Notification of Documentation Updates section and Community Resources sectionGo

Changes from Revision G (February 2008) to Revision H (January 2015)

  • Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table, Typical Characteristics, 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.Go