What this regulator brings to the bench
The LT1082IT#PBF is a current-mode switching regulator for step-up, step-down, and isolated converter designs. It integrates an 850 mA switch rated to 100 V, with a 75 V input bus and a switching frequency between 12 kHz and 60 kHz. Output is adjustable from 1.244 V up to the switch voltage limit, and the configuration supports positive, negative, or isolated rails. It ships in a TO-220-5 through-hole package.
850 mA switch — what it means for your power budget
The 850 mA figure is the peak switch current, not the continuous output. In a boost converter, output current will be lower by the voltage-conversion ratio times efficiency.
Wide input range and output flexibility
The input range spans 3 V to 75 V. The switch can handle up to 100 V. Output can be set positive, negative, or isolated. The adjustable feedback pin references 1.244 V.
Through-hole package and thermal handling
The TO-220-5 package is a through-hole part with a metal tab. The junction temperature range is -40°C to 125°C.
Sourcing and lifecycle
The LT1082IT#PBF is listed as Active in production and ROHS3 compliant. There is no last-time-buy notice or NRND flag on this part, so it is safe to qualify for new designs. No direct second-source alternate is listed by the manufacturer, but the LT1373IS8#PBF (surface-mount, 1.5 A switch, 250 kHz) covers a similar topology set if your board can accommodate an SOIC-8 package and a higher switching frequency.