TPS2556

ACTIVE

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

Product details

Product type Adjustable current limit, Power switch Vin (min) (V) 2.5 Vin (max) (V) 6.5 Continuous current (max) (A) 5 Current limit (A) 0.5 to 5.0 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 1 Current limit accuracy at 1 A 7.0% (4100mA min / 4715mA max) Rating Catalog
Product type Adjustable current limit, Power switch Vin (min) (V) 2.5 Vin (max) (V) 6.5 Continuous current (max) (A) 5 Current limit (A) 0.5 to 5.0 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 1 Current limit accuracy at 1 A 7.0% (4100mA min / 4715mA max) Rating Catalog
VSON (DRB) 8 9 mm² 3 x 3
  • Meets USB Current-Limiting Requirements
  • Adjustable Current Limit, 500 mA to 5 A (Typical)
  • ±6.5% Current-Limit Accuracy at 4.5 A
  • Fast Overcurrent Response: 3.5-µs (Typical)
  • 22-mΩ High-Side MOSFET
  • Operating Voltage: 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
  • UL Listed: File No. E169910 and CB IEC60950-1-am2 ed2.0
  • Meets USB Current-Limiting Requirements
  • Adjustable Current Limit, 500 mA to 5 A (Typical)
  • ±6.5% Current-Limit Accuracy at 4.5 A
  • Fast Overcurrent Response: 3.5-µs (Typical)
  • 22-mΩ High-Side MOSFET
  • Operating Voltage: 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
  • UL Listed: File No. E169910 and CB IEC60950-1-am2 ed2.0

The TPS255x power-distribution switch is intended for 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 500 mA and 5 A (typical) through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.

TPS255x 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.

The TPS255x power-distribution switch is intended for 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 500 mA and 5 A (typical) through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.

TPS255x 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.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
TPS2557 ACTIVE 0.5-5A adjustable ILIMIT, 2.5-6.5V, 22mΩ USB power switch, active-high This product offers the same functionality and pinout with enable active-high.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet TPS255x Precision Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. B) PDF | HTML 01 Dec 2016
Certificate TPS2556, TPS2557 UL Certificate of Compliance IEC 62368-1 (Rev. A) 24 Jun 2024
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
EVM User's guide Using the TPS2556/7EVM 19 Nov 2009

Design & development

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

Evaluation board

TPS2556DRBEVM-423 — TPS2556DRBEVM-423: Evaluation Module for TPS2556

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
Not available on TI.com
Simulation model

TPS2556 TINA-TI Transient Reference Design

SLVM496.TSC (635 KB) - TINA-TI Reference Design
Simulation model

TPS2556 TINA-TI Transient Spice Model

SLVM497.ZIP (22 KB) - TINA-TI Spice Model
Simulation model

TPS2556 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM410A.ZIP (32 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
VSON (DRB) 8 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

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

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos