SLVSDJ0D May   2016  – September 2018 TPS25940-Q1

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Output Short-to-Battery Detection and Protection
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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. Parametric Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable and Adjusting Undervoltage Lockout
      2. 8.3.2 Overvoltage Protection (OVP)
      3. 8.3.3 Hot Plug-In and In-Rush Current Control
      4. 8.3.4 Overload and Short Circuit Protection
        1. 8.3.4.1 Overload Protection
        2. 8.3.4.2 Short Circuit Protection
        3. 8.3.4.3 Start-Up with Short on Output
        4. 8.3.4.4 Constant Current Limit Behavior During Overcurrent Faults
      5. 8.3.5 FAULT Response
      6. 8.3.6 Current Monitoring
      7. 8.3.7 Power Good Comparator
      8. 8.3.8 IN, OUT and GND Pins
      9. 8.3.9 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 DevSleep Mode
      2. 8.4.2 Shutdown Control
  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 Step by Step Design Procedure
        2. 9.2.2.2 Programming the Current-Limit Threshold: R(ILIM) Selection
        3. 9.2.2.3 Undervoltage Lockout and Overvoltage Set Point
        4. 9.2.2.4 Programming Current Monitoring Resistor—RIMON
        5. 9.2.2.5 Setting Output Voltage Ramp Time (tdVdT)
          1. 9.2.2.5.1 Case1: Start-up Without Load: Only Output Capacitance C(OUT) Draws Current During Start-up
          2. 9.2.2.5.2 Case 2: Start-Up With Load: Output Capacitance C(OUT) and Load Draws Current During Start-Up
        6. 9.2.2.6 Programing the Power Good Set Point
        7. 9.2.2.7 Support Component Selections—R6, R7 and CIN
      3. 9.2.3 Application Curves
      4. 9.2.4 System Examples
        1. 9.2.4.1 VBUS Short-to-Battery, Short-to-Ground Protection of USB Port in Automotive Systems
        2. 9.2.4.2 Power Failure Protection for Holdup Power
        3. 9.2.4.3 Overload Detection Using TPS25940x-Q1
  10. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • 2.7-V to 18-V Operating Voltage, 20 V (Maximum)
  • Total RON: 42 mΩ (Typical)
  • 0.6-A to 5.3-A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • Adjustable Under-, Overvoltage Threshold (±2%)
  • Reverse Current Blocking
  • 1-μs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • Short-to-Battery Protection
  • Short-to-Ground Protection
  • TPS25940-Q1: Auto-Retry
  • TPS25940L-Q1: Latch-Off