The Toshiba TCR2EE17,LM(CT is a fixed-output LDO delivering 1.7 V at up to 200 mA from a SOT-553 package. The 73 dB PSRR at 1 kHz means that ripple on the input rail up to 5.5 V is attenuated by a factor of roughly 4500 at that frequency — useful for powering analog front-ends or sensor bias where the upstream supply carries switching noise.
Dropout and quiescent — the real-world headroom and standby drain
Maximum dropout is 0.7 V at 300 mA load — the input rail must stay at least 0.7 V above 1.7 V to maintain regulation at that current. At 200 mA typical load the dropout is lower, but the worst-case figure governs the design margin. Quiescent current is 60 µA typical — the regulator's own draw is low enough for battery-powered equipment that spends most of its time in sleep, though not at the sub-µA level of dedicated ultra-low-Iq parts. The enable pin lets the system shut down the output for power sequencing or standby — when pulled low the output goes high-impedance and the quiescent current drops further.
Industrial temperature range and protection — where it fits
Built-in over-current protection limits the output during a fault — the regulator folds back rather than latching off, so it self-recovers when the overload clears. The SOT-553 footprint is 1.6 mm × 1.6 mm — the smallest package in the TCR2EE family.
Active lifecycle — no obsolescence risk on this order code
RoHS non-compliant — the part contains lead (Pb) above the 0.1% threshold. This is typical for legacy or high-reliability lots that use tin-lead plating. If your BOM requires RoHS compliance, the TCR2EE17,LM(CT does not meet it; a Pb-free variant would carry a different suffix.
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