UCC3813D-3

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The UCC3813D-3 is a Pulse Width Modulated (PWM) Control Regulator IC, part of the DC-DC Switching Controllers family of Power Management ICs (PMICs). This IC is suitable for use in DC-DC regulated power supplies such as adjustable and fixed regulated Lithium-Ion (Li-Ion) battery chargers, DC-DC LED lighting, portable instrumentation, and more.

The UCC3813D-3 features a wide adjustable output voltage range from 0.8V to 14V, a high switching frequency of 600Khz and a dynamic response time of 0.3ms to a maximum load step of 25%. The IC also contains comprehensive fault detection, including over current, under current, over temperature, and short-circuit protection, as well as variable switching dropout voltage and short-circuit current sense shutoff.

In terms of its working principle, the UCC3813D-3 functions by regulating the voltage of an alternating current (AC). To do so, the control IC modulates the on and off states of a power device to control the output voltage. The chip is composed of an oscillator, a pulse width modulation (PWM) control, a voltage feedback loop and over voltage/current protection circuitry. When the power device is turned on and off, the PWM control adjusts the pulse width of the output current to adjust for any variation in the output voltage.

The UCC3813D-3 is a highly efficient DC-DC switching controller, providing an excellent solution for applications where precise control of the output voltage is needed. It has a wide adjustable output voltage range of 0.8V to 14V, allowing it to be used in a wide range of applications. With its high switching frequency and dynamic response time, the IC can quickly react to load changes, allowing for stable control of the output voltage. Its comprehensive fault detection circuitry includes a variety of protections, such as over current, under current, over temperature and short-circuit protection, providing an effective means of preventing any damage to the circuit. In addition, the chip has a variable switching dropout voltage and short-circuit current sense shutoff, ensuring that the circuit is safe to use. As a result, the UCC3813D-3 is an ideal solution for providing precisely regulated power supplies for applications such as adjustable and fixed regulated Li-Ion chargers and DC-DC LED lighting.

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