UC3833DWTR Integrated Circuits (ICs)

The UC3833DWTR is a linear regulator controller from the family of PMIC (Power Management Integrated Circuit) voltage regulators. It is designed to provide intelligent control for simple low power SMPS (Switched-Mode Power Supply), such as motor drives, monitors, office equipment, and portable devices. The device features cycle-by-cycle current limiting, adjustable frequency, voltage-clamp overvoltage protection, external fault signal, low-voltage sensing, over temperature protection, and thermal shutdown.

The UC3833DWTR is meant to be used as an on-chip alternative to dedicated power supply controllers. It provides the user with an alternative low-cost approach to efficiently design a power supply circuit with minimal effort. The UC3833DWTR features an internal signal logic controlled PWM (Pulse-Width Modulation) converter with adjustable frequency and a programmable current limit. The PWM controller uses a synchronous pulsed signal to control the power output of the power supply. This signal is generated by the integrated voltage reference, which is adjustable by an external resistor.

The UC3833DWTR also contains a low-voltage sensing circuit and an over voltage clamp. The low-voltage sensing circuit senses when the output voltage reaches the desired voltage level and turns the power output off. The over voltage clamp ensures that the output voltage does not exceed a specified limit, which is adjustable via two external resistors. The device also features an external fault signal that can be used to indicate when the output voltage has reached the fault level. This can be used to protect other components in the system from overvoltage damage.

In addition, the UC3833DWTR features over temperature protection and thermal shutdown. The over temperature protection detects when the internal temperature of the device exceeds a certain level and shuts off the power output. The thermal shutdown further protects the system by shutting off the power output if the internal temperature exceeds the thermal shutdown level.

The UC3833DWTR is ideal for low power applications, such as monitors, office equipment, and portable devices. It is designed to provide an efficient and cost-effective alternative to dedicated power supply controllers. The device is also designed with comprehensive protection and sensing features, which provide users with a reliable and safe power supply solution.