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Infineon Technologies TLF50281ELXUMA3 — Discrete Semiconductors

TLF50281ELXUMA3 Buck Regulator, 5V 500mA, 14-LSSOP, Active

MPNTLF50281ELXUMA3
End of Life

Infineon TLF50281ELXUMA3, Step-Down Buck Regulator, Fixed 5V Output, 500mA, 4.75V to 45V Input, 2.2MHz Switching, -40°C to 150°C, PG-SSOP-14 Package, Tape & Reel.

$2.61Ref. price · indicative, final on quote
Infineon Technologies TLF50281ELXUMA3 datasheet (PDF)
Packaging14-LSSOP (0.154", 3.90mm Width) Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLF50281ELXUMA3 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input4.75V
Voltage - output (Min (Fixed))5V
Output current500mA
Frequency - switching2.2MHz
I/O channels1
Operating temperature-40°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case14-LSSOP (0.154\", 3.90mm Width) Exposed Pad
Output configurationPositive
Synchronous rectifierYes

Product details

Temperature grade and environment

Rated for a junction temperature range of -40°C to 150°C, this regulator is built for automotive under-hood and industrial high-temperature environments — engine bays, transmission control units, and factory-floor sensor supplies. The exposed pad on the PG-SSOP-14 package helps conduct heat to the PCB copper plane; a thermal-via pattern under the pad is recommended to keep junction temperature within limits at full load in hot ambient conditions.

Sourcing and lifecycle

ROHS3 compliant. For new designs, this part carries no last-time-buy risk and is a stable BOM line.

Frequently asked questions

What is the output current of TLF50281ELXUMA3?

The output current rating is 500mA continuous. This is suitable for powering MCUs, sensor modules, CAN transceivers, or auxiliary bias rails.