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TPS25921LDR

TPS25921LDR Electronic Fuse, 1.7 A, 4.5-18 V, 8-SOIC

MPNTPS25921LDR
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Texas Instruments TPS25921LDR, Electronic Fuse, 1.7 A output, 4.5 V to 18 V input, ±2% accuracy, 8-SOIC package, -40°C to 125°C junction temperature.

$1.6900Ref. price · indicative, final on quote
Texas Instruments TPS25921LDR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS25921LDR specifications
ParameterValue
MountingSurface Mount
Voltage - input4.5V ~ 18V
Output current1.7A
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Accuracy±2%
FunctionElectronic Fuse
Case8-SOIC (0.154\", 3.90mm Width)

Product details

1.7 A eFuse with ±2% current-limit accuracy

The Texas Instruments TPS25921LDR is an electronic fuse (eFuse) that protects downstream circuitry from overcurrent and overvoltage events. Its continuous output current rating of 1.7 A sets the load budget — the designer sizes the PCB trace and the load to stay under this ceiling with derating for ambient temperature. The input voltage range spans 4.5 V to 18 V, covering common 5 V, 12 V, and 15 V supply rails without an external regulator. The ±2% current-limit accuracy means the threshold is tight enough to set the limit just above the normal load without wasting headroom on guardband.

Surface-mount assembly with the SOIC-8 package uses a standard reflow profile.

Frequently asked questions

What is the closest alternative to TPS25921LDR?

The base product number TPS25921 covers multiple current-rating variants in the same family; check the TPS25921 series for higher or lower current options if the 1.7 A rating does not fit the load budget.