SLVSCC6A March   2014  – June 2014 TPS2561A-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Functions and Configurations
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Overcurrent Conditions
      2. 9.3.2 FAULTx Response
      3. 9.3.3 Thermal Sense
    4. 9.4 Device Functional Mode
      1. 9.4.1 Undervoltage Lockout (UVLO)
      2. 9.4.2 Enable (ENx)
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Current Limit
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Determine Design Parameters
          2. 10.2.1.2.2 Programming the Current-Limit Threshold
          3. 10.2.1.2.3 Designing Above a Minimum Current Limit
          4. 10.2.1.2.4 Designing Below a Maximum Current Limit
          5. 10.2.1.2.5 Accounting for Resistor Tolerance
          6. 10.2.1.2.6 Power Dissipation and Junction Temperature
          7. 10.2.1.2.7 Auto-Retry Functionality
          8. 10.2.1.2.8 Two-Level Current-Limit Circuit
      2. 10.2.2 Application Curves
  11. 11Power Supply Requirements
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Two separate current limiting channels
  • Meets USB Current-Limiting Requirements
  • Adjustable Current Limit, 250 mA–2.8 A (Typ.)
  • Accurate 2.1A Min / 2.5A Max Setting
  • Fast Short Circuit Response - 3.5-μs (typ)
  • Two 44-mΩ High-Side MOSFETs
  • Operating Range: 2.5 V to 6.5 V
  • 2-μA Maximum Standby Supply Current
  • Built-in Soft-Start
  • 15 kV / 8 kV System-Level ESD Capable

2 Applications

    Automotive USB Charging Ports

3 Description

The TPS2561A-Q1 is dual-channel power-distribution switch intended for automotive applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 250 mA and 2.8 A (typ) per channel via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turn on/off.

Each channel of the TPS2561A-Q1 devices limits the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULTx logic output for each channel independently asserts low during overcurrent and over temperature conditions.

Use with the TPS2511-Q or TPS2513A-Q1 for a low loss, automotive qualified, USB Charging Port Solution capable of charging all of today's popular phones and tablets.

Device Information

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS2561A-Q1 SON (10) 3.00mm x 3.00mm

Typical Application as Power Switch of Dual Port Automotive USB Charge Port Solution

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