High-voltage LDO for industrial bias rails
The LT3010HMS8E#TRPBF is a single-output adjustable positive LDO from Analog Devices, delivering 50 mA continuous output current from an 80 V maximum input rail. Its 1.275 V minimum output and 60 V maximum output cover the common bias voltages for gate drivers, isolated supplies, and microcontroller power stages in industrial control panels.
Maximum dropout is 0.6 V at the full 50 mA load — the input-to-output headroom must stay above 600 mV across load and temperature to keep the output in regulation. PSRR is 75 dB at 120 Hz, which means the regulator attenuates 120 Hz ripple from a rectified mains input by a factor of roughly 5600 — useful for powering sensitive analog front-ends from unregulated bulk supplies.
Temperature range and protection for harsh environments
Rated for -40°C to 140°C operating junction temperature, this LDO suits outdoor telecom enclosures, engine-bay electronics, and industrial sensors that see sustained heat. Built-in over-current, over-temperature, and reverse-polarity protection let the regulator survive output shorts, thermal runaway, and a reversed input connection without external clamp diodes.
The Enable control pin allows the regulator to be shut down by a logic signal, dropping quiescent current to near zero during system sleep modes.