01 / 03The D3833 is a high-performance, high-precision and low-cost PWM power supply switching circuit for non-isolated buck and flyback applications.It includes a dedicated current mode PWM controller (built-in high-voltage power MOSFET and DIP8/SOP8/DIP7 package) and built-in error amplifier, optimized for good overshoot and dynamic response, low cost and a small number of peripheral components.In the full voltage AC input range, the chip accurately keeps the output voltage constant at 12V through the internal precision resistance voltage division and the accurate reference voltage of the error amplifier.In order to improve efficiency, the chip adopts oscillators controlled by frequency reduction and burst mode, and adopts frequency jitter technology and soft drive design to make the chip have good EMI performance. D3833 Built-in power-on soft-start control and multiple protection functions with automatic restart, including cycle-by-cycle current limiting, overload protection, output short-circuit protection, on-chip over-temperature protection, VDD overvoltage protection, and undervoltage lockout.
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