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Toshiba Semiconductor TCR2EF19,LM(CT — Power Management (PMIC / Gate Driver)

TCR2EF19,LM(CT – Toshiba 1.9V 200mA LDO, SC-74A, Active

MPNTCR2EF19,LM(CT
End of Life

Toshiba Semiconductor, series TCR2EF, linear voltage regulator IC, fixed 1.9 V output, 200 mA output current, 73 dB PSRR at 1 kHz, 60 µA quiescent current, SC-74A (SOT-753) surface-mount package, active production.

$0.33Ref. price · indicative, final on quote
Toshiba Semiconductor TCR2EF19,LM(CT datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
SeriesTCR2EF
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TCR2EF19,LM(CT specifications
ParameterValue
SeriesTCR2EF
Output typeFixed
MountingSurface Mount
Voltage - input5.5V
Voltage dropout0.31V @ 150mA
Voltage - output (Min (Fixed))1.9V
Output current200mA
Current - quiescent60 µA
Operating temperature-40°C ~ 85°C
PSRR73dB (1kHz)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSC-74A, SOT-753
Control featuresEnable
Protection featuresOver Current
Number of regulators1
Output configurationPositive

Product details

Active LDO for a 1.9 V local rail

The TCR2EF19,LM(CT is a fixed-output 1.9 V linear regulator from Toshiba's TCR2EF series, rated for 200 mA continuous output. With a PSRR of 73 dB at 1 kHz, this LDO attenuates input ripple by a factor of ~4500 — useful for powering analog front-ends, sensor bias rails, or low-noise oscillator supplies where a switching regulator's ripple would couple into the signal path.

Dropout, quiescent current, and thermal budget

Maximum dropout voltage is 0.31 V at 150 mA. For a 1.9 V output, the input must stay above 2.21 V at that load — a 3.3 V rail or a 2.5 V rail with margin works. The 60 µA quiescent current is moderate; in a battery-powered design drawing 200 mA load, the Iq adds 0.03 % overhead, negligible for most applications. The SC-74A package has no exposed pad, so thermal resistance depends on PCB copper area. At 200 mA and a 1.4 V drop (5.5 V input to 1.9 V output), dissipation is 280 mW — within the package's capability with reasonable copper on a standard FR-4 board.

Frequently asked questions

What is the closest pin-compatible alternative to TCR2EF19,LM(CT in the TCR2EF family?

The TCR2EF series includes fixed-output voltage options such as TCR2EF18 (1.8 V) and TCR2EF28 (2.8 V) in the same SC-74A package and pinout. For a 1.9 V rail, the TCR2EF19 is the direct fit; the TCR2EF18 would output 1.8 V, which may or may not meet the load's tolerance. No official cross-reference is published — confirm the output voltage requirement before substituting.

Can TCR2EF19 be used with a 3.3 V input?

Yes. The maximum input voltage is 5.5 V, so 3.3 V is well within range. At 200 mA load, the dropout is 0.31 V max, so the 1.4 V headroom (3.3 V - 1.9 V) is more than sufficient. The extra voltage drop increases power dissipation — at 200 mA, dissipation is 280 mW, which the SC-74A package can handle with adequate PCB copper.

What is the PSRR of the TCR2EF19 at 1 kHz?

73 dB at 1 kHz. This is a typical value for a general-purpose LDO — it attenuates 1 kHz ripple by a factor of about 4500, suitable for cleaning up a switching regulator output for analog loads.