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  • TPS742 1.5A Ultra-LDO With Programmable Soft-Start

    • SBVS064P December   2005  – February 2025 TPS74201

      PRODUCTION DATA  

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  • TPS742 1.5A Ultra-LDO With Programmable Soft-Start
  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 Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Enable and Shutdown
      2. 6.3.2 Power-Good (VQFN Packages Only)
      3. 6.3.3 Internal Current Limit
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Disabled
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Input, Output, and Bias Capacitor Requirements
      2. 7.1.2 Transient Response
      3. 7.1.3 Dropout Voltage
      4. 7.1.4 Output Noise
      5. 7.1.5 Programmable Soft-Start
      6. 7.1.6 Sequencing Requirements
    2. 7.2 Typical Applications
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Thermal Protection
        2. 7.4.1.2 Thermal Considerations
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Evaluation Modules
        2. 8.1.1.2 Spice Models
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
      2. 8.2.2 Device Nomenclature
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
  12. IMPORTANT NOTICE
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Data Sheet

TPS742 1.5A Ultra-LDO With Programmable Soft-Start

1 Features

  • Input voltage range: 0.8V to 5.5V
  • Soft-start (SS) pin provides a linear start-up with ramp time set by external capacitor
  • 1% accuracy over line, load, and temperature
  • Supports input voltages as low as 0.8V with external bias supply
  • Adjustable output (0.8V to 3.6V)
  • Ultra-Low Dropout:
    • 60mV (legacy chip) at 1.5A (typical)
    • 55mV (new chip) at 1.5A (typical)
  • Stable with any output capacitor ≥ 2.2μF (new chip)
  • Stable with any or no output capacitor (legacy chip)
  • Excellent transient response
  • Open-drain power-good
  • Active high enable

2 Applications

  • Network attached storage - enterprise
  • Rack servers
  • Network interface cards (NIC)
  • Merchant network and server PSU

 
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