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Product details

Parameters

Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Continuous current (Max) (A) 2.5 Current limit (A) 0.25 to 2.7 Enable Active High Number of switches 1 Rating Catalog open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other USB power switches & charging port controllers

Features

  • 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)

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Description

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
* Datasheet TPS25221 2.5-V to 5.5-V, 2-A Continuous Current Limited Switch datasheet (Rev. D) Dec. 11, 2019
User guides TPS25221 Evaluation Module (Rev. A) Sep. 23, 2019
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
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 (...)
Features
  • Adjustable current limit
  • High current limit accuracy
  • Fast over current response

Design tools & simulation

SIMULATION MODELS Download
SLVMCO6A.ZIP (73 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Multi-rail TV power supply reference design, with flexible partitioning to maximize power savings
TIDA-050027 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality

Support & training

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