The UCC28C42DGK by Texas Instruments is a robust and versatile PWM (Pulse Width Modulation) controller integrated circuit designed for a wide range of power supply applications. This component is part of the UCC28C4x series, which is known for its reliability and efficiency in controlling power conversion processes.

Key Features

• Operating Range: The UCC28C42DGK operates with a supply voltage range from 8V to 35V, which makes it suitable for various applications, including offline power converters.
• Frequency Range: It features a programmable switching frequency that can range from 100 kHz to 500 kHz, allowing designers to optimize their power supply design for efficiency or for the size of the power components.
• Current Mode Control: The device implements current mode control which provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Low Startup and Operating Current: The UCC28C42DGK boasts a low startup current of typically 0.5 µA and an operating current of 2.5 mA, contributing to the overall efficiency of the power supply.
• Trimmed Oscillator Discharge Current: This ensures precise duty cycle clamping which can be critical in many applications to prevent transformer saturation or to achieve a specific power regulation.

Applications

The UCC28C42DGK is well-suited for a variety of applications, including:

• Switched mode power supplies (SMPS)
• DC-DC converters
• Power inverters
• Battery chargers
• LED drivers

Package and Availability

The Texas Instruments UCC28C42DGK is offered in an 8-pin MSOP (Mini Small Outline Package) that is designed for compact PCB layouts. The small footprint of this package allows for high-density power supply designs without sacrificing performance or reliability.

For detailed specifications, application notes, and support documentation, interested customers are encouraged to visit the Texas Instruments website or contact their sales and support team. The UCC28C42DGK is available through various distributors, and bulk pricing may be available for large volume orders.