Active production — automotive LDO for ECU supply rails
The TLE42994GMV33XUMA3: Fixed 3.3V output at 150mA continuous, with a 45V absolute maximum input — the wide input margin handles load-dump transients on a 12V or 24V automotive bus without an external clamp.
Protection suite and quiescent budget
Integrated protection covers over-current, over-temperature, reverse polarity, and short-circuit events — the regulator survives a sustained output short to ground at battery voltage without latch-up or thermal runaway. Quiescent current is 100 µA typical at no load, rising to 2 mA maximum under full supply current — low enough for always-on ECU domains that must stay powered during key-off to maintain wake-up circuits. PSRR is 66 dB at 100 Hz — the ripple rejection at alternator fundamental frequency attenuates the 100 Hz ripple from the rectified alternator output before it reaches the downstream microcontroller supply rail.
Supplied in a PG-DSO-14 package (14-SOIC, 3.90 mm body width) — the exposed pad on the underside requires a thermal via array to the ground plane to keep junction temperature below the 150°C limit at full load in a 85°C ambient. Enable and Reset control pins are available — the enable pin allows sequenced power-up, and the reset output provides a power-good flag to the ECU microcontroller without an external supervisor IC.