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Toshiba Semiconductor TCR3DM105,LF(SE — Analog & Data Acquisition

TCR3DM105,LF(SE LDO Regulator 1.05V 300mA 4-UDFN Toshiba

MPNTCR3DM105,LF(SE
End of Life

Toshiba Semiconductor TCR3DM105,LF(SE, fixed-output positive LDO regulator, 1.05 V output at 300 mA, 0.75 V max dropout, 4-UDFN exposed pad package, -40°C to 85°C temperature range.

$0.49Ref. price · indicative, final on quote
Toshiba Semiconductor TCR3DM105,LF(SE datasheet (PDF)
Packaging4-UDFN Exposed Pad
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TCR3DM105,LF(SE specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input5.5V
Voltage dropout0.75V @ 300mA
Voltage - output (Min (Fixed))1.05V
Output current300mA
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Case4-UDFN Exposed Pad
Control featuresEnable
Protection featuresOver Current, Over Temperature
Number of regulators1
Output configurationPositive

Product details

Fixed 1.05 V rail for low-voltage loads

The TCR3DM105,LF(SE is a fixed-output positive LDO from Toshiba, delivering a regulated 1.05 V at up to 300 mA. The 0.75 V maximum dropout at full load means the input must stay above 1.80 V to maintain regulation — a tight window that suits battery-powered or low-VIN rails powering MCU cores, sensor analog supplies, or RF front-ends.

Dropout and thermal headroom at 300 mA

With a maximum input voltage of 5.5 V, the part can run from a 3.3 V or 5 V rail, but the dropout spec at 300 mA (0.75 V max) sets the practical lower bound: a 1.8 V input is marginal, 2.5 V gives comfortable margin.

Active production and package availability

Protection and temperature grade

Built-in over-current and over-temperature protection guard against output shorts or excessive ambient heat.

Frequently asked questions

Can TCR3DM105,LF(SE be used for a 1.05 V output at 300 mA?

Yes, the fixed output is 1.05 V and the rated output current is 300 mA. The 0.75 V max dropout at that current means the input must be at least 1.80 V to maintain regulation.

What package does TCR3DM105,LF(SE come in?

The part is offered in a 4-UDFN exposed pad package, supplier device package 4-DFN (1x1). The exposed pad must be soldered to a thermal land on the PCB for heat dissipation.