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TPS2557-Q1

ACTIVE

Automotive 0.5-5A adjustable ILIMIT, 2.5-6.5V, 22mΩ USB power switch, active-high

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Data sheet

TPS2557-Q1

ACTIVE
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Product details

Product type Adjustable current limit, Power switch Vin (max) (V) 6.5 Vin (min) (V) 2.5 Rating Automotive Number of channels 1 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Current limit accuracy at 1 A 7.0% (4100mA min / 4715mA max) Enable Active High
Product type Adjustable current limit, Power switch Vin (max) (V) 6.5 Vin (min) (V) 2.5 Rating Automotive Number of channels 1 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Current limit accuracy at 1 A 7.0% (4100mA min / 4715mA max) Enable Active High
VSON (DRB) 8 9 mm² (3 mm × 3 mm)
  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Meets USB current-limiting requirements
  • Adjustable current limit, 500 mA – 5 A (typ.)
  • ±6.5% current-limit accuracy at 4.5 A
  • Fast short-circuit response – 3.5 µs (typ.)
  • 22-mΩ high-side MOSFET
  • Operating range: 2.5 V to 6.5 V
  • 2-µA maximum standby supply current
  • Built-in soft-start
  • 15-kV and 8-kV system-level ESD capable
  • Safety-related certifications:
    • UL Recognized for UL 2367
    • CB Certification for IEC 60950
    • CB Certification for IEC 62368
  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Meets USB current-limiting requirements
  • Adjustable current limit, 500 mA – 5 A (typ.)
  • ±6.5% current-limit accuracy at 4.5 A
  • Fast short-circuit response – 3.5 µs (typ.)
  • 22-mΩ high-side MOSFET
  • Operating range: 2.5 V to 6.5 V
  • 2-µA maximum standby supply current
  • Built-in soft-start
  • 15-kV and 8-kV system-level ESD capable
  • Safety-related certifications:
    • UL Recognized for UL 2367
    • CB Certification for IEC 60950
    • CB Certification for IEC 62368

The TPS2556-Q1 and TPS2557-Q1 power-distribution switches are specialized for automotive applications which require precision current limiting or capacity to handle heavy capacitive loads and short circuits. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) via an external resistor. Control of the power-switch rise and fall times minimizes current surges during turnon or turnoff.

TPS2556-Q1 and TPS2557-Q1 devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.

Use with the TPS2511-Q1 or TPS2513A-Q1 for a low-loss, automotive-qualified, USB charging-port solution capable of charging all of today’s popular phones and tablets.

The TPS2556-Q1 and TPS2557-Q1 power-distribution switches are specialized for automotive applications which require precision current limiting or capacity to handle heavy capacitive loads and short circuits. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) via an external resistor. Control of the power-switch rise and fall times minimizes current surges during turnon or turnoff.

TPS2556-Q1 and TPS2557-Q1 devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.

Use with the TPS2511-Q1 or TPS2513A-Q1 for a low-loss, automotive-qualified, USB charging-port solution capable of charging all of today’s popular phones and tablets.
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TPS2556-Q1 ACTIVE Automotive 0.5-5A adjustable ILIMIT, 2.5-6.5V, 22mΩ USB power switch, active-low This product offers the same functionality and pinout with enable active-low.

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS255x-Q1 Precision Automotive Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. B) PDF | HTML Sep 23, 2020
Certificate TPS2556, TPS2557 UL Certificate of Compliance IEC 62368-1 (Rev. A) Jun 24, 2024
Functional safety information TPS2556-Q1, TPS2557-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML Jul 20, 2020
Application note How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device PDF | HTML Feb 26, 2020
Selection guide Power Management Guide 2018 (Rev. R) Jun 25, 2018

Design & development

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

Evaluation board

TPS2557DRBEVM-423 — TPS2557DRBEVM-423: Evaluation Module for TPS2557

The TPS2556EVM-423 and TPS2557EVM-423 are evaluation modules (EVM) for Texas Instruments power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5-V to 6.5-V range. An on-board jumper sets the output current-limit to either 0.5 A or 1 A. The board is designed for the (...)

User guide: PDF
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Simulation model

TPS2557 TINA-TI Transient Reference Design

SLVM494.TSC (635 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

TPS2557 TINA-TI Transient Spice Model

SLVM495.ZIP (22 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TPS2557 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM409A.ZIP (31 KB) - PSpice model
Supported products & hardware
Reference design

PMP21771 — 30-W power for automotive dual USB Type-C® charge port reference design

This reference design uses an LM61460-Q1 synchronous buck regulator that provides current of 6 A to two TPS2557-Q1 load switch channels to provide 30 W of total power to dual USB Type-C® charge ports. This is designed for high-power efficiency and thermal performance and comes in a small size. The (...)
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