Skip to main content
Log in
Texas Instruments TPS2051CDBVT — Power Management (PMIC / Gate Driver)

TPS2051CDBVT USB Power Switch, 97 mOhm, SOT-23-5

MPNTPS2051CDBVT
Active

Texas Instruments TPS2051CDBVT, USB power switch, single N-channel high-side, 97 mOhm Rds(on) typical, 500 mA max output, SOT-23-5 package, -40°C to 85°C.

$1.2300Ref. price · indicative, final on quote
Texas Instruments TPS2051CDBVT datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS2051CDBVT specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeUSB Switch
MountingSurface Mount
Voltage - load4.5V ~ 5.5V
Voltage - supply (Vcc (Vdd))Not Required
Output current500mA
I/O channels1
InterfaceOn/Off
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR) Cut Tape (CT)
FeaturesOutput Discharge
Rds on97mOhm
CaseSC-74A, SOT-753
Fault protectionCurrent Limiting (Fixed), Over Temperature, Reverse Current, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

Single high-side USB switch with integrated fault protection

The TPS2051CDBVT is a single-channel high-side N-channel MOSFET power switch from Texas Instruments, designed for USB and general-purpose power-distribution applications. The switch is controlled by a single On/Off logic input (non-inverting) and does not require a separate Vcc supply — the gate drive is derived from the load voltage. This simplifies the BOM by eliminating a bias rail.

Fault protections that reduce external component count

Four integrated fault protections — fixed current limiting, over-temperature shutdown, reverse-current blocking, and undervoltage lockout (UVLO) — cover the common failure modes in a USB port or general-purpose load switch. The output discharge feature ensures the output capacitor is bled to ground when the switch is turned off, preventing a residual voltage from holding up the load during power-down sequencing.

The SOT-23-5 package (SC-74A) is a standard 5-pin footprint that reflows on a standard lead-free profile.

Frequently asked questions

What is the difference between TPS2051CDBVT and TPS2051CDBVR?

Both share the same die and electrical ratings — 97 mOhm Rds(on), 500 mA output, SOT-23-5 package. The suffix difference is tape-and-reel packaging orientation: the 'VT' variant is supplied in a standard 7-inch reel (3000 pcs/reel), while the 'VR' variant uses a different reel orientation. Confirm the reel direction with the datasheet if your pick-and-place machine requires a specific tape feed.

Is the TPS2051CDBVT a power distribution switch?

Yes. It is a single-channel high-side N-channel MOSFET switch specifically designed for USB power distribution and general-purpose load switching.

What is the closest pin-compatible alternative in the same family?

Within the TPS2051 family, the TPS2051CDBVR is electrically identical and pin-compatible — the only difference is the reel packaging suffix. For a dual-channel variant with the same SOT-23-5 footprint, the TPS2052 series offers two independent switches but uses a different pinout. Confirm the pin assignment against the datasheet before substituting.