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TPS2051ADG4

TPS2051ADG4 High-Side Power Switch, 80 mOhm, 500 mA, Active

MPNTPS2051ADG4
End of Life

Texas Instruments TPS2051ADG4, high-side power switch, 1 output, 80 mOhm Rds(on) typ, 500 mA max, 2.7V–5.5V load, 8-SOIC, 0°C–125°C junction, active.

$58.8000Ref. price · indicative, final on quote
Texas Instruments TPS2051ADG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS2051ADG4 specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load2.7V ~ 5.5V
Voltage - supply (Vcc (Vdd))Not Required
Output current500mA
I/O channels1
InterfaceOn/Off
Operating temperature0°C~125°C(TJ)
PackageTube
FeaturesStatus Flag
Rds on80mOhm
Case8-SOIC (0.154\", 3.90mm Width)
Fault protectionCurrent Limiting (Fixed), Over Temperature, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

80 mOhm Rds(on) — the conduction loss floor

Its 80 mOhm typical on-resistance at 500 mA output sets a conduction loss of about 20 mW at full load — negligible in most designs, but worth checking if the board is in a sealed enclosure with no airflow.

500 mA output with built-in fault protection

Rated for 500 mA continuous output, the TPS2051ADG4 includes fixed current limiting, over-temperature shutdown, and undervoltage lockout (UVLO) — all on-chip. The switch is non-inverting and driven by a logic-level On/Off input.

Listed as Active in the product lifecycle, the TPS2051ADG4 carries no imminent end-of-life notice.

Frequently asked questions

What is the difference between TPS2051A and TPS2051B?

The TPS2051A (this part) and TPS2051B differ in their current-limit threshold tolerance. The TPS2051A has a tighter current-limit specification, making it the preferred choice for designs that need a more predictable fault-trip point. Both share the same pinout, package, and 80 mOhm Rds(on) typical.