The MC34025 series are high speed, fixed frequency, double-ended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components.
The MC34025 series are high speed, fixed frequency, double-ended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, a wide bandwidth error amplifier, a high speed current sensing comparator, steering flip-flop, and dual high current totem pole outputs ideally suited for driving power MOSFETs.
| Operating Junction Temperature | +150 °C |
|---|---|
| Maximum Power Dissipation (SO-16 Package) | 862 mW |
| Oscillator Frequency (Typical) | 400 kHz |
| Maximum Duty Cycle | 90% |
| Propagation Delay to Outputs | 50 ns |
The MC34025 operates from 0°C to +70°C, while the MC33025 operates from -40°C to +105°C.
The typical start-up current is 500 µA.
Yes, the document states it is functionally similar to the UC3825.