5V fixed LDO with watchdog – what the ratings mean for the BOM
The Infineon TLE7278-2GV50 is a single-output, positive fixed linear regulator delivering 5V at up to 180 mA. It is built for automotive and industrial environments where a clean, regulated 5V rail is needed from a higher, possibly noisy input bus up to 45V. The part integrates enable, reset, and watchdog control features, plus over-current, over-temperature, and short-circuit protection, reducing external supervisory circuitry.
PSRR and temperature range – where it earns its keep
Power supply rejection ratio is 60 dB at 100 Hz. Junction temperature range spans -40°C to 150°C.
Package and lifecycle – active, no LTB risk
The TLE7278-2GV50 is supplied in a 14-pin SOIC package (PG-DSO-14, 3.90 mm width) for surface-mount assembly.