Product details


Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 5.5 Current limit (A) 1.2 to 5.5 A Enable Active High Number of switches 1 Rating Automotive open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other USB power switches & charging port controllers


  • Qualified for Automotive Applications AEC-Q100
    Qualified With the Following Results:
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • 2.5 to 6.5 V Operating Range
  • Adjustable 1.2 to 4.7 A I(LIMIT) (±4.7% 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
  • Reverse Current Blocking when Disabled
  • 8 kV / 15 kV System-Level ESD Capable
  • 10-Pin SON (3-mm × 3-mm) Package with
    Wettable Flanks
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The TPS2559-Q1 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-Q1 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-Q1.

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.

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Technical documentation

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Type Title Date
* Datasheet TPS2559-Q1 Precision Adjustable Current-Limited Power-Distribution Switch datasheet Dec. 03, 2015
Application notes How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device Feb. 26, 2020
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014
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Technical articles Using telemetry in point-of-load applications Jun. 24, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPS2559EVM-624 is a fully assembled and test circuit for evaluating the TPS2559 precision adjustable current limited power distribution switch intended for application where heavy capacitive loads and short circuits are likely to be encountered.

The EVM contains header connectors for easy (...)

  • Meets USB Current Limiting Requirements
  • Adjustable Current Limit (500mA - 5A)
  • Precision Accuracy Current Limit (+/-3.5% at 4.5A)
  • Fast Over Current Response (3.5 us)

Design tools & simulation

SLVMAA7A.ZIP (83 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

Ordering & quality

Support & training

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Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

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