The UCx84x family of current-mode PWM controllers offers a range of package options, temperature range options, and choices of maximum duty cycle, turn-on and turn-off thresholds, and hysteresis ranges.
These devices are optimized for off-line and DC-to-DC converters, featuring low start-up current, automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load-response characteristics.
Key Features
Undervoltage lockout with hysteresis, double-pulse suppression, high-current totem-pole output, and an internally trimmed bandgap reference.
They are suitable for switching regulators of any polarity and transformer-coupled DC-DC converters, with operation up to 500 kHz.
Manual:
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