SBVS477A May   2025  – July 2025 TPS7B4259-Q1

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 Tracker Output Voltage (VOUT)
        1. 6.3.1.1 Output Voltage Equal to Reference Voltage
        2. 6.3.1.2 Output Voltage Less Than the Reference Voltage
      2. 6.3.2 Reverse Current Protection
      3. 6.3.3 Power Good
      4. 6.3.4 Undervoltage Lockout
      5. 6.3.5 Thermal Protection
      6. 6.3.6 Current Limit
      7. 6.3.7 Output Short to Battery
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
      3. 6.4.3 Operation With VIN < 3.3V
      4. 6.4.4 Disable With ADJ and EN Controls
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Dropout Voltage
      2. 7.1.2 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input and Output Capacitor Selection
      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 Package Mounting
        2. 7.4.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
        3. 7.4.1.3 Power Dissipation and Thermal Considerations
        4. 7.4.1.4 Thermal Performance Versus Copper Area
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    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

1 Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Wide input voltage range:
    • Absolute maximum range: –40V to 45V
    • Operating range: 3.3V to 40V
  • Wide output voltage range: 2V to 40V
  • Maximum output current: 150mA
  • Very tight output-tracking tolerance: 6mV (max)
  • Low dropout voltage: 250mV at 150mA
  • Independent enable pin functionality
  • Power-good functionality detects under- and overvoltage conditions
  • Low quiescent current at light load: 55μA
  • Stable over a wide range of ceramic output capacitor values:
    • COUT range: 1μF to 100μF
    • ESR range: 1mΩ to 2Ω
  • Integrated protection features:
    • Reverse current protection
    • Reverse polarity protection
    • Overtemperature protection
    • Protection against output short circuit to ground and supply
  • Available in a low thermal resistance, 8-pin package:
    • HSOIC (DDA), RθJA = 48℃/W