The Texas Instruments TPS25221DBVR is a current-switch IC in a SOT-23-6 package, designed to protect power distribution paths by limiting output current to a programmed threshold. It delivers up to 2A continuous output across a 2.5V to 5.5V input range, covering the common 3.3V and 5V system rails used in USB ports, hot-swap controllers, and general-purpose power multiplexing. The ±6% current-limit accuracy means you can set the trip point closer to the load's maximum draw without triggering false limits, which directly reduces headroom required on the upstream supply. For a 2A design, a ±6% band translates to a worst-case limit between 1.88A and 2.12A — tight enough to protect downstream components without oversizing the input rail.
Texas Instruments TPS25221DBVR Current Switch, 2A, SOT-23-6
MPNTPS25221DBVR
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Texas Instruments TPS25221DBVR current switch, 2A continuous output, 2.5V to 5.5V input, ±6% accuracy, SOT-23-6 package, -40°C to 125°C operating temperature.
$0.6200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage - input | 2.5V ~ 5.5V |
| Output current | 2A |
| Operating temperature | -40°C~125°C(TJ) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Accuracy | ±6% |
| Function | Current Switch |
| Case | SOT-23-6 |
Product details
Frequently asked questions
Is TPS25221DBVR suitable for USB power switching?
Yes. The 2.5V to 5.5V input range covers USB 5V rails, and the 2A continuous output handles USB 2.0 and most USB 3.0 current requirements. The ±6% current-limit accuracy provides predictable overcurrent protection for USB ports.
Does TPS25221DBVR have an enable pin?
Yes, the device includes an enable pin for on/off control of the output switch. The exact logic threshold and enable timing are specified in the datasheet.