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UC1843B-SP: Sawtooth generator for voltage mode UC1843B PWM

Part Number: UC1843B-SP
Other Parts Discussed in Thread: UC1843-SP

Hi,

I`m searching for a component able to generate a positive ramp sawtooth waveform at 300kHz with a peak of 0.8V at maximum for feeding the "I sense" pin of the UC1843B PWM using it in voltage mode. This component should also have another output for generating two sawtooth waveforms which are shifted by 50%, so with a delay pin if possible. Moreover, this component should be space-grade, military, or at least having high-reliability features.

Thanking you in advance 

Giacomo