Product details

Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Continuous current (Max) (A) 2.5 Current limit (A) 0.25 to 2.7 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 Rating Catalog
Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Continuous current (Max) (A) 2.5 Current limit (A) 0.25 to 2.7 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125 Enable Active High 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
  • 2.5-V to 5.5-V VOPERATING
  • Pin-to-Pin with TPS2553
  • 2-A ICONT_MAX
  • 0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
  • 70-mΩ (typical) RON
  • 1.5-µs Short Circuit Response
  • 8-ms Fault Reporting Deglitch
  • Reverse Current Blocking (when disabled)
  • Built-In Soft Start
  • UL 60950 and UL 62368 Recognition
  • 15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)
  • 2.5-V to 5.5-V VOPERATING
  • Pin-to-Pin with TPS2553
  • 2-A ICONT_MAX
  • 0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
  • 70-mΩ (typical) RON
  • 1.5-µs Short Circuit Response
  • 8-ms Fault Reporting Deglitch
  • Reverse Current Blocking (when disabled)
  • Built-In Soft Start
  • UL 60950 and UL 62368 Recognition
  • 15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. Power-switch rise and fall times are controlled to minimize current surges during turn on and turn off.

When a load attempts to draw current exceeding the programmed ILIMIT the internal FET enters constant current mode in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built in de-glitch time.

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. Power-switch rise and fall times are controlled to minimize current surges during turn on and turn off.

When a load attempts to draw current exceeding the programmed ILIMIT the internal FET enters constant current mode in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built in de-glitch time.

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Technical documentation

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Type Title Date
* Data sheet TPS25221 2.5-V to 5.5-V, 2-A Continuous Current Limited Switch datasheet (Rev. D) 11 Dec 2019
Certificate TPS25221 UL Certificate of Compliance IEC 62368-1 14 Aug 2020
Application note Power Switch Fault Glitch Solution During Power Up (Rev. A) 09 Apr 2020
User guide TPS25221 Evaluation Module (Rev. A) 23 Sep 2019

Design & development

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

Evaluation board

TPS25221DBVEVM-018 — TPS25221 Evaluation module for adjustable current-limit USB power switch

The TPS25221DBVEVM-018 is an evaluation module (EVM) for Texas Instrument's family of power-distribution switches with adjustable current-limit. This EVM operates over a 2.5 V to 5.5 V range. An onboard jumper sets the output current-limit to either 1.3 A or 2.6 A. Test points provide convenient (...)
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Simulation model

TPS25221 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMCO6A.ZIP (73 KB) - PSpice Model
Reference designs

TIDA-050027 — Multi-rail TV power supply reference design, with flexible partitioning to maximize power savings

The TIDA-050027 reference design is a power distribution solution for Television (TV) platforms. By providing a configuration that emulates common voltage rails and peripherals, this design can be used as a reference design across multiple TV power architectures including LCD and OLED TV. On the (...)
Package Pins Download
SOT-23 (DBV) 6 View options
WSON (DRV) 6 View options

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