Product details

Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 1.5 Current limit (A) 0.075 to 1.7 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125, -40 to 85 Enable Active Low Number of switches 1 Rating Catalog
Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 1.5 Current limit (A) 0.075 to 1.7 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125, -40 to 85 Enable Active Low Number of switches 1 Rating Catalog
SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 WSON (DRV) 6 4 mm² 2 x 2
  • Up to 1.5-A Maximum Load Current
  • ±6% Current-Limit Accuracy at 1.7 A (Typical)
  • Meets USB Current-Limiting Requirements
  • Backwards Compatible With TPS2550 and TPS2551
  • Adjustable Current Limit: 75 mA to 1700 mA (Typical)
  • Constant-Current (TPS255x) and Latch-Off (TPS255x-1) Versions
  • Fast Overcurrent Response - 2 µs (Typical)
  • 85-mΩ High-Side MOSFET (DBV Package)
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 V to 6.5 V
  • Built-In Soft Start
  • 15-kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
  • UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0
  • See the TI Switch Portfolio
  • Up to 1.5-A Maximum Load Current
  • ±6% Current-Limit Accuracy at 1.7 A (Typical)
  • Meets USB Current-Limiting Requirements
  • Backwards Compatible With TPS2550 and TPS2551
  • Adjustable Current Limit: 75 mA to 1700 mA (Typical)
  • Constant-Current (TPS255x) and Latch-Off (TPS255x-1) Versions
  • Fast Overcurrent Response - 2 µs (Typical)
  • 85-mΩ High-Side MOSFET (DBV Package)
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 V to 6.5 V
  • Built-In Soft Start
  • 15-kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
  • UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0
  • See the TI Switch Portfolio

The TPS255x and TPS255x-1 power-distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typical) through an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. 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 using a constant-current mode when the output load exceeds the current-limit threshold. TPS255x-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. An internal reverse-voltage comparator disables the power-switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.

The TPS255x and TPS255x-1 power-distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typical) through an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. 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 using a constant-current mode when the output load exceeds the current-limit threshold. TPS255x-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. An internal reverse-voltage comparator disables the power-switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.

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Technical documentation

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Type Title Date
* Data sheet TPS255xx Precision Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. F) PDF | HTML 15 Aug 2014
Certificate TPS2552 UL Certificate of Compliance IEC 62368-1 07 Sep 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note USB Power Switch Reverse Current Protection 13 Feb 2013
User guide Power-Distribution Switch with Adjustable Current-Limit EVM 08 Oct 2008

Design & development

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

Evaluation board

TPS2552DBVEVM-364 — Power-Distribution Switch with Adjustable Current-Limit Evaluation Module for TPS2552DBVEVM-364

The TPS2552/3DBVEVM and TPS2552/3DRVEVM are evaluation modules (EVM) for Texas Instruments’family of power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5 V to 6.5 V range. An onboard jumper sets the output current-limit to either 0.5 A or (...)

User guide: PDF
Not available on TI.com
Evaluation board

TPS2552DRVEVM-364 — Power-Distribution Switch with Adjustable Current-Limit Evaluation Module for TPS2552DRVEVM-364

The TPS2552/3DBVEVM and TPS2552/3DRVEVM are evaluation modules (EVM) for Texas Instruments’family of power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5 V to 6.5 V range. An onboard jumper sets the output current-limit to either 0.5 A or (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS2552 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM421A.ZIP (33 KB) - PSpice Model
Calculation tool

TPS255X-CURRENT-LIMIT-CALC — Free Tool: TPS2552/53 Current-Limit Threshold Calculator Tool

Package Pins Download
SOT-23 (DBV) 6 View options
WSON (DRV) 6 View options

Ordering & quality

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