UCC2809DTR-1 Integrated Circuits (ICs)

PMIC – AC DC Converters, Offline Switchers

UCC2809DTR-1 is a high-efficiency, low-power AC/DC controller suitable for offline power applications ranging from 0.5 Watts to 19 Watts. It is targeted at small fan and home appliance AC/DC converter applications. This IC is perfect for any application looking for high-performance power in a small package.

UCC2809DTR-1 is equipped with a process control loop for high-efficiency operation. It also features full internal protection, low start-up and operating current, and a soft-start circuit. When compared to similar products, UCC2809DTR-1 offers higher efficiency, cost savings, and better performance.

Application Field

UCC2809DTR-1 is a highly integrated, low-power AC/DC controller suitable for applications ranging from 0.5 Watts to 19 Watts. This controller is ideal for SMPS applications targeting fan and home appliance applications. It offers high-efficiency, low power consumption, high accuracy, low audible noise and superior performance.

UCC2809DTR-1 is suitable for a wide range of applications including laptop adapters, portable device chargers, battery chargers, AC adapters, appliances, and TV/monitor adapters. It is also suitable for automotive applications requiring low power consumption.

Working Principle

At the heart of the UCC2809DTR-1 is a Buck converter with a process control loop for high-efficiency operation. The IC features a variable frequency hysteretic current-mode control in three frequency bands, depending on the input voltage. This allows for superior line regulation and improved light-load efficiency.

The IC is also equipped with a precise voltage reference, error amplifier, soft-start circuit, programmable leading-edge blanking, over current protection and other monitoring functions. The output voltage is adjusted by a resistor connected to the FB pin. This allows for a precise output voltage and a fast response time.

The UCC2809DTR-1 also features low-noise-mode operation, allowing for silent operation when in light-load conditions. This is achieved by operating the IC in continuous conduction-mode in light load conditions to reduce switching noise, and switching frequency is automatically reduced when the output current falls to a certain level.

Conclusion

UCC2809DTR-1 is a high-efficiency, low-power AC/DC controller suitable for offline power applications ranging from 0.5 Watts to 19 Watts. The IC is ideal for SMPS applications targeting fan and home appliance applications. It offers high-efficiency, low power consumption, high accuracy, low audible noise and superior performance. The IC is also equipped with a process control loop for high-efficiency operation and offers full internal protection, low start-up and operating current, and a soft-start circuit.