The Toshiba TAR5S16U(TE85L,F) is a single-output positive fixed LDO regulator delivering 1.6 V at up to 200 mA, with a power-supply rejection ratio of 70 dB at 1 kHz. That PSRR figure means ripple on the input rail at 1 kHz is attenuated by a factor of about 3,160 — relevant when the regulator sits downstream of a switching converter whose fundamental or harmonics fall near that frequency. The 15 V maximum input gives headroom for unregulated rails or 12 V intermediate buses. The UFV package (6-SMD, 5 leads, flat lead) keeps the footprint compact for space-constrained PCBs.
Active production, RoHS constraint — a sourcing detail that matters
Built-in protection features — over-current and over-temperature — mean the regulator handles fault conditions without requiring an external supervisor or crowbar circuit. The enable pin allows a logic-level signal to shut down the output, useful for power sequencing or dropping into a low-power sleep state where the 850 µA max supply current becomes the floor draw.
Peer parts — same family, different output voltage
The TAR5S16U sits in a family of fixed-output LDOs that share the same 70 dB PSRR, 200 mA rating, UFV package, and protection feature set. The TAR5S18U(TE85L,F) outputs 1.8 V, the TAR5SB33(TE85L,F) and TAR5S33UTE85LF both output 3.3 V. The only parametric difference across these peers is the fixed output voltage — footprint, pinout, and thermal performance are identical, so a board laid out for one can accept any of them by changing only the BOM line, provided the downstream load tolerates the voltage shift.