Dual-rail LDO for noise-sensitive 1.8V/1.2V supplies
The TLV7111812DSET is a dual-output low-dropout linear regulator from Texas Instruments, delivering a fixed 1.8V rail and a fixed 1.2V rail, each rated for 200mA continuous output. Housed in a 6-WSON (1.5x1.5 mm) package, it targets board areas where two low-noise supply rails are needed from a single 5.5V max input. The PSRR spec — 80 dB at 10 Hz rolling off to 50 dB at 100 kHz — means the output rejects upstream ripple from a switching pre-regulator across the audio band and well into the switching-frequency range. For an RF or analog front-end sharing a board with a buck converter, this keeps the supply clean enough to avoid desensitisation.
Thermal and protection envelope
The quiescent current sits at 110 µA — low enough for always-on domains in battery-powered gear, though not a micro-power LDO for sub-µA sleep rails. Built-in protection includes over-current, over-temperature, short-circuit, and under-voltage lockout (UVLO). The enable pin lets a system controller sequence the two rails on/off independently, matching the power-up order required by many SoCs and FPGAs.
Listed as Active with ROHS3 compliance. Texas Instruments maintains the standard datasheet and application notes for this family.