SLVSCL5 June   2014 TPS2559

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified Schematic
  5. Revision History
  6. Device Comparison Table
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Thermal Sense
      2. 10.3.2 Overcurrent Protection
      3. 10.3.3 FAULT Response
    4. 10.4 Device Functional Modes
      1. 10.4.1 Operation with VIN Undervoltage Lockout (UVLO) Control
      2. 10.4.2 Operation with EN Control
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Step by Step Design Procedure
        2. 11.2.2.2 Input and Output Capacitance
        3. 11.2.2.3 Programming the Current-Limit Threshold
        4. 11.2.2.4 Design Above a Minimum Current Limit
        5. 11.2.2.5 Design Below a Maximum Current Limit
        6. 11.2.2.6 Accounting for Resistor Tolerance
        7. 11.2.2.7 Power Dissipation and Junction Temperature
        8. 11.2.2.8 Auto-Retry
        9. 11.2.2.9 Two-level Current-limit
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Trademarks
    2. 14.2 Electrostatic Discharge Caution
    3. 14.3 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 2.5 to 6.5 V Operating Range
  • Adjustable 1.2 to 4.7 A I(LIMIT) (±4.4% at 4.7 A)
  • 3.5 µs Short Circuit Shutoff (Typical)
  • 13-mΩ High-Side MOSFET
  • 2-µA Maximum Standby Supply Current
  • Built-in Soft-Start
  • 8 kV / 15 kV System-Level ESD Capable
  • UL 2367 Recognition Pending

2 Applications

  • USB Ports/Hubs
  • Digital TV
  • Set-Top Boxes
  • VOIP Phones

3 Description

The TPS2559 power-distribution switch is intended for applications where a low resistance, precision current limit switch is required or heavy capacitive loads are encountered. The TPS2559 provides up to 5.5 A of continuous load current with a precise current limit set by a single resistor to ground. Output current is maintained at a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. During overload events the output current is limited to the level set by R(ILIM). If a persistent overload occurs, the device goes into thermal shutoff to prevent damage to the TPS2559.

The power-switch rise and fall times are controlled to minimize current surges during turn on or off. The FAULT logic output asserts low during overcurrent or overtemperature conditions.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS2559 VSON (10) 3.00mm x 3.00mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Simplified Schematic

simple_schematic_slvscl5.gif