UC3844D8G4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UC3844D8G4 is a DC-DC switching controller designed for voltage regulator applications. It has a wide operating range, making it suitable for both low voltage and high voltage applications. The controller has a built-in 1.5A current-mode PWM (pulse-width modulation) control which allows advanced control of the output voltage. Its internal compensation provides enhanced stability and performance.

Its applications include general buck, boost and Cuk voltage regulator designs. The output voltage can range from 0.7V to 600V. It supports a wide range of operational current levels, up to 1A. The input voltage can range from 4V to 28V. The UC3844D8G4 includes an integrated soft-start and current limit protection, and can be used in either continuous or discontinuous conduction mode.

The UC3844D8G4 features pulse-by-pulse current limiting, leading edge blanking of both the current sense and the control signal, and adaptive dead time control which ensures optimum efficiency under varying load conditions. It also includes a low voltage reset and a disable logic input. The output voltage is adjustable with an external feedback divider and can be trimmed with an external reference voltage.

The working principle of the UC3844D8G4 is based on the principle of pulse-width modulation. The internal oscillator produces a fixed frequency square wave signal which is used to trigger the switching of the output mosfet. The width of each pulse is determined by the voltage applied to the internal PWM comparator. The reference voltage is applied to the internal compensation network which sets the output voltage. As the load conditions change, the signal flowing through the internal compensation network will adjust the output voltage accordingly.

In addition, the UC3844D8G4 provides a wide range of protection features. These include overvoltage protection, undervoltage protection, overtemperature protection, as well as a thermal shutdown timer. This ensures the safe and reliable operation of the device.

The UC3844D8G4 is an ideal solution for voltage regulation applications which require high efficiency and reliable operation. Its wide operating range, advanced features, and integrated protection features make it suitable for a wide range of applications.

The specific data is subject to PDF, and the above content is for reference