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Texas Instruments TPS2553DBVR — Power Management (PMIC / Gate Driver)

TPS2553DBVR Power Distribution Switch, 1.5 A, SOT-23-6

MPNTPS2553DBVR
Active

Texas Instruments TPS2553DBVR high-side power-distribution switch, 1.5 A max output, 85 mOhm typical Rds(on), adjustable current limit, slew-rate controlled, SOT-23-6 package, -40°C to 150°C junction temperature.

$0.9100Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS2553DBVR specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load2.5V ~ 6.5V
Voltage - supply (Vcc (Vdd))Not Required
Output current1.5A
I/O channels1
InterfaceOn/Off
Operating temperature-40°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesSlew Rate Controlled, Status Flag
Rds on85mOhm
CaseSOT-23-6
Fault protectionCurrent Limiting (Adjustable), Over Temperature, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

1.5 A in a SOT-23-6 — thermal budget is the real limit

The 85 mOhm typical Rds(on) at 1.5 A yields a ~190 mW dissipation floor — well within the SOT-23-6 package's capability at moderate ambient, but the designer must account for the junction-to-ambient thermal resistance when pushing the full 1.5 A at elevated temperatures.

Adjustable current limit with fault flag

A precision resistor from the ILIM pin to GND sets the overcurrent threshold — no external logic supply needed, since Vcc/Vdd is not required. The switch enters constant-current mode when the load exceeds the limit, pulling the open-drain fault flag low. Over-temperature shutdown and under-voltage lockout (UVLO) complete the protection suite. The slew-rate controlled turn-on prevents inrush current from tripping the upstream supply or causing bus voltage droop on capacitive loads — a common pain point in hot-plug and USB port designs.

Frequently asked questions

Does TPS2553DBVR require external resistors to set the current limit?

Yes. A single resistor between the ILIM pin and GND programs the overcurrent threshold. The exact resistor value is calculated from the desired limit using the formula in the datasheet — no external Vcc supply is needed because the device does not require Vcc/Vdd.

Can TPS2553DBVR be used for 5 V USB power switching?

Yes. The 2.5 V to 6.5 V load supply range covers the 5 V USB bus, and the adjustable current limit can be set to 1.5 A or below to meet USB port requirements. The slew-rate controlled turn-on and overcurrent flag align with USB 2.0 hot-plug behaviour, though the part is not formally USB-IF certified.