SG2823J/883B

The Microchip Technology SG2823J/883B is a pulse-width modulation (PWM) controller for switching power supplies, manufactured and screened to MIL-STD-883 Class B requirements. Part of the SG2823 family, it is housed in a hermetic ceramic dual-in-line (CDIP) package and integrates the essential building blocks for closed-loop voltage regulation. Typical on-chip resources include a temperature-compensated 5 V voltage reference, a high-gain error amplifier, an adjustable-frequency sawtooth oscillator, pulse-by-pulse current limiting, a shutdown function, and dual alternating outputs with 180-degree phase separation. The device supports push-pull, half-bridge, full-bridge, and single-ended converter topologies, with output stages capable of driving transformer-coupled power stages directly.

Applications span military avionics, radar power subsystems, satellite power conditioning, high-reliability industrial motor drives, and ruggedized DC-DC converters where sustained operation across the full military temperature range is mandatory. The /883B suffix indicates full compliance with MIL-STD-883 test methods, encompassing nondestructive bond pull, stabilization bake, temperature cycling, constant acceleration, burn-in, and final electrical testing—providing a controlled baseline for mission-critical procurement. The ceramic DIP package provides a true hermetic seal, protecting the die from moisture and contamination in high-altitude, severe-vibration, and corrosive environments. Procurement teams should treat this component as a mature military-grade device subject to extended lead times, potential obsolescence notices, and constrained supply; sourcing exclusively through authorized distributors ensures full traceability, counterfeit avoidance, and adherence to the required screening level.