1.5A LDO, 1.8V fixed output — the headroom and noise story
The LP3852ESX-1.8/NOPB: Power supply rejection is 73 dB at 120 Hz, dropping to 57 dB at the same frequency under different load conditions — this matters for analog or RF circuits where the downstream noise floor depends on the LDO's ability to clean up ripple from a switching pre-regulator.
Thermal and package fit — DDPAK-5 on a copper plane
Operating temperature spans -40°C to 125°C, covering industrial and under-hood automotive ambient conditions without derating the output current at the low end.
Protection and control — enable, over-temp, short-circuit
An enable pin allows the output to be gated by a logic signal; quiescent current is 3 mA typical when enabled, and the regulator draws up to 10 mA from the input under maximum supply current conditions. Built-in protection covers over-current, over-temperature, and short-circuit events — the LDO folds back or shuts down rather than exceeding the junction temperature limit.