Multi-topology PWM controller with 46 kHz fixed switching
The UCC2800MDREP is a current-mode PWM controller from Texas Instruments supporting boost, flyback, and forward converter topologies — one part number covers three common isolated and non-isolated DC-DC architectures. Switching frequency is fixed at 46 kHz, which sets the transformer core size and output filter components for a given power level. The 99% maximum duty cycle allows the controller to stay in regulation near the input rail, useful for battery-powered designs where the supply voltage sags.
Temperature grade and supply voltage for system integration
A power supply in an engine bay, satellite, or downhole tool sees the same junction temperature margin as a lab bench unit. Supply voltage (Vcc) spans 6.9 V to 12 V. The undervoltage lockout thresholds are set inside this window; the bias rail must deliver at least 6.9 V for the controller to start switching. Packaged in an 8-pin SOIC (3.90 mm body width) — the standard small-outline footprint for low-pin-count controllers. The supplier device package is 8-SOIC, matching the JEDEC MS-012 variation.
It remains a valid selection for both new designs and production builds. ROHS3 compliant per the current TI environmental data. No restricted substances in the package or lead finish.