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Texas Instruments TPS2551DBVTG4 — Power Management (PMIC / Gate Driver)

Texas Instruments TPS2551DBVTG4 Power Switch, 1.1A, SOT-23-6

MPNTPS2551DBVTG4
End of Life

Texas Instruments TPS2551DBVTG4, high-side power switch, 1 output, 1.1A max, 85mOhm typ Rds(on), adjustable current limit, SOT-23-6, -40 to 150°C.

Texas Instruments TPS2551DBVTG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS2551DBVTG4 specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load2.5V ~ 6.5V
Voltage - supply (Vcc (Vdd))Not Required
Output current1.1A
I/O channels1
InterfaceOn/Off
Operating temperature-40°C~150°C(TJ)
PackageTape & Reel (TR)
FeaturesSlew Rate Controlled
Rds on85mOhm
CaseSOT-23-6
Fault protectionCurrent Limiting (Adjustable), Over Temperature, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

High-side switch in SOT-23-6 — 85 mOhm on-resistance sets the load budget

The switch is controlled by a single On/Off logic input (non-inverting, active high), and does not require a separate Vcc supply — the gate drive is self-biased from the load voltage.

Adjustable current limit — set the trip point with one external resistor

Fault protection includes adjustable current limiting (set by an external resistor from the ILIM pin to ground), over-temperature shutdown, and undervoltage lockout (UVLO). The adjustable limit lets the designer set the trip point anywhere below the 1.1 A maximum, matching the cable or connector rating rather than the switch's own capability. The slew-rate-controlled turn-on (flagged in the features list) limits inrush current into capacitive loads — useful for powering USB ports or hot-swap cards where the downstream decoupling capacitance can pull the rail down on connect.

Active lifecycle — no end-of-life clock on this BOM line

Frequently asked questions

What is the maximum current of TPS2551?

The TPS2551DBVTG4 is rated for a maximum continuous output current of 1.1 A. The adjustable current-limit threshold is set below this value by an external resistor, so the actual trip point depends on the resistor value chosen.

Does TPS2551 require an external resistor?

Yes — an external resistor from the ILIM pin to ground sets the current-limit threshold.

Is TPS2551DBVTG4 RoHS compliant?

The part is listed with a Tape & Reel package option and is manufactured by Texas Instruments, who typically mark RoHS compliance on the product label. Confirm the specific date-code compliance certificate with the supplier at quote time.