Texas Instruments

UCC3818ADR  

Power Factor Correction ICs

The UCC3818ADR is a high-voltage, high-power step-down switching regulator controller produced by Texas Instruments. It is specifically designed for off-line applications, such as power supply units (PSUs) for televisions, monitors, and other consumer electronics.

Description:

The UCC3818ADR is a monolithic integrated circuit that provides a complete solution for off-line power supply applications. It includes a high-voltage startup circuit, an under-voltage lockout (UVLO), a power save mode, and a thermal shutdown protection. The device also features a high-voltage power MOSFET driver and a current sensing circuit.

Features:

1. Wide input voltage range: The UCC3818ADR can operate with input voltages ranging from 45V to 65V, making it suitable for a variety of off-line applications.
2. High output current: The device can deliver up to 3A of continuous output current, making it suitable for high-power applications.
3. High efficiency: The UCC3818ADR features a high-efficiency synchronous rectification mode, which reduces power dissipation and improves overall efficiency.
4. Power save mode: The device can enter a low-power mode during light load conditions, further improving efficiency and reducing power consumption.
5. Thermal shutdown protection: The UCC3818ADR includes a thermal shutdown feature that protects the device from overheating.
6. Under-voltage lockout (UVLO): The device has an integrated UVLO circuit that prevents it from operating if the input voltage falls below a certain threshold.
7. High-voltage startup: The UCC3818ADR features a high-voltage startup circuit that allows it to operate with input voltages as low as 45V.

Applications:

1. Power supply units (PSUs) for televisions and monitors
2. High-power consumer electronics
3. Industrial power supplies
4. Medical equipment power supplies
5. Telecommunication equipment power supplies
6. Computer power supplies

In summary, the UCC3818ADR is a versatile and efficient step-down switching regulator controller designed for high-voltage, high-power off-line applications. Its wide input voltage range, high output current capability, and various protection features make it suitable for a wide range of power supply applications.

UCC3818ADR Documents

Download datasheets and manufacturer documentation for UCC3818ADR

Datasheets :

UCC2817A/18A, UCC3817A/18A      

HTML Datasheet :

UCC2817A/18A, UCC3817A/18A      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018       UCX2817XX 06/Feb/2017