3.3 V fixed LDO with 45 V input ceiling
The TLE42662GSV33HTMA1 is a single-output positive linear regulator delivering a fixed 3.3 V at up to 100 mA. Input voltage range extends to 45 V maximum, making it suitable for automotive battery rails (12 V/24 V nominal) that see load-dump transients without requiring an external pre-regulator. Quiescent current is 70 µA typical — low enough for always-on modules in battery-backed systems where every microamp extends standby life.
68 dB PSRR and integrated protection
Power-supply rejection ratio is 68 dB at 100 Hz — this attenuates ripple from rectified mains or alternator output by a factor of ~2500, keeping the 3.3 V rail clean for sensitive analog or microcontroller supplies. On-chip protection includes over-temperature shutdown, reverse polarity blocking, and short-circuit current limiting, so the regulator survives a miswired battery or a downstream fault without external clamp diodes. The PG-SOT223-4 package (TO-261AA footprint) is a standard SMD power package with an exposed tab for heat sinking — layout guidelines are well established and the pad pattern is shared across many LDOs in this class.