UCC283TD-3

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UCC283TD-3 is a linear voltage regulator from the PMIC (Power Management Integrated Circuits) family designed for use in voltage regulation applications. The device is designed to provide an output voltage of 3.3 V and has a power rating of up to 3 amps. By default, UCC283TD-3 features two different regulation modes:series regulator and shunt regulator.

Application Field

UCC283TD-3 is ideally suited for applications requiring a high-performance yet economical solution for powering small digital systems, including consumer electronics, computer peripherals, and automotive electronics. The device is particularly well-suited to applications requiring high power delivery while maintaining low output noise levels. The device is also suitable for use in non-switchable, primary-side power supplies, where it can help reduce component cost and provide improved efficiency. UCC283TD-3 can also be used to generate negative voltages from a 5 V input, such as a USB supply. With the internal compensation component, the device is ready for a wide range of input voltage and load conditions, making it suitable for use in a variety of different applications.

Working Principle

UCC283TD-3 operates in either series or shunt mode according to its status pin. When the status pin is at logical high level, the device operates in series mode and the output voltage is determined by the input-output differential. When the status pin is at logical low level, the device operates in shunt mode and the output voltage is determined by the setting of VOUTR. The device features internal compensation components, so no additional component is required for compensation.

The device is designed to provide a smooth and steady operation without excessively large output voltage fluctuations or over-/under-voltage protection. The design of the voltage regulator ensures that the current is drawn from the input power source and the output reaches the preset constant voltage. The protection functions of the UCC283TD-3 include short-circuit protection, over-voltage protection, and over-temperature protection. These make it even more suitable for use in applications where reliable operation is required.

UCC283TD-3 features an internal MOSFET to provide over-/under-voltage protection as well as short-circuit protection. When an over-voltage or under-voltage condition is detected, the MOSFET shuts down and the output voltage is maintained until the over-voltage or under-voltage condition is removed. In addition to providing protection, the MOSFET also provides improved efficiency and lower power dissipation.

UCC283TD-3 also features an onboard power on reset (POR) circuit to ensure reliable system startup. When the POR circuit detects an over- or under-voltage condition, the circuit shuts down the device until the voltage condition is corrected.

Overall, UCC283TD-3 from PMIC Voltage Regulators Linear family is an ideal solution for regulating the output voltage of a small system. Its internal compensation and protection functions make it suitable for a wide range of applications, while its low power dissipation, high power delivery and low output noise levels make it an ideal solution for powering small digital systems.

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