Supply range 7.6V–30V — what it buys you
The UC3845AD8TR is a current-mode PWM controller from the UCx84xA family, designed for flyback, boost, and forward-converter topologies. The 11 mA supply current keeps the standby draw low enough for energy-star designs; mind the gate-drive charge when sizing the bias winding.
0°C–70°C commercial temp — keep it indoors
The 0°C–70°C operating temperature range limits this part to commercial-grade equipment — office power supplies, appliance control boards, and indoor AC-DC converters. If your BOM needs an industrial or automotive temperature grade, the UC2845AD8TR extends the range to -40°C–85°C (TA) with the same pinout and supply specs.
8-SOIC footprint — layout checklist
The 8-SOIC package has 0.154-inch body width and 3.90 mm width — standard SOIC-8 land pattern. No exposed thermal pad; the die heat couples through the leadframe into the PCB copper.