2.1 A adjustable LDO with 80 dB line rejection
The Analog Devices LT3086ET7#PBF is a positive adjustable linear regulator rated for 2.1 A continuous output. Its 80 dB PSRR at 120 Hz suits post-rectifier rails feeding sensitive analog loads. Maximum input voltage is 40 V. Dropout is specified at 0.54 V max at the full 2.1 A load.
Protection set and control interface
On-chip protection covers over-current, over-temperature, and reverse polarity — the reverse-polarity clamp saves an external Schottky on the input when the supply is hot-plugged or miswired. Control features include a current-limit pin (set the threshold with a resistor), an enable pin for sequencing, a power-good flag for reset generation or FPGA configuration monitoring, and a tracking pin for ratiometric start-up. Quiescent current is 2.4 mA typical; the maximum supply current (including the pass-element drive) is 88 mA at full load. The TO-220-7 formed-leads package is through-hole, which simplifies prototyping and rework compared to a QFN or SOIC — a practical advantage for lab power supplies, burn-in boards, and low-to-medium volume production where wave-solder or hand-assembly is the norm.
Temperature grade and deployment context
Rated for -40°C to 125°C operating junction temperature, the LT3086ET7#PBF suits outdoor telecom cabinets and factory-floor automation.
Lifecycle and sourcing
Listed as Active on the lifecycle record and ROHS3 compliant. There is no announced last-time-buy or EOL notice.