1.2V fixed rail with 200 mA ceiling
The STMicroelectronics LDK120M12R is a single-output positive LDO that delivers a fixed 1.2 V at up to 200 mA continuous. The 0.3 V max dropout at full load means the input rail must stay above 1.5 V across the load range to keep the output in regulation — budget that headroom into your power tree. Quiescent current sits at 60 µA typical, with a 100 µA max supply current. For a battery-powered sensor node that sleeps most of the time, the always-on regulator draw stays under the self-discharge rate of a coin cell. PSRR is 55 dB from 120 Hz through 10 kHz — the band where switching-regulator ripple and line-frequency harmonics live. That rejection means the 1.2 V rail stays clean enough for analog front-ends or RF oscillators without a post-filter.
Industrial temp grade and fault protection
The SOT-23-5 package (SC-74A) keeps the footprint small — 0.95 mm pitch, 2.9 mm body length — fitting into tight sensor modules or handheld gear. Built-in over-current and over-temperature protection means the regulator folds back or shuts down before the die sees destructive stress. The Enable pin lets a GPIO or supervisor IC gate the output — useful for sequencing multiple rails or cutting power in standby.
Active lifecycle, ROHS3 compliant
ROHS3 compliant per.