Product Overview: Texas Instruments UCC38C43DRG4

The UCC38C43DRG4 is a versatile and efficient BiCMOS pulse-width modulation (PWM) controller from Texas Instruments designed for a wide range of power supply applications. This component is part of the UCC38C4x family, which is renowned for its reliability and performance in controlling low-power switched-mode power supplies.

Key Features

• Operating Frequency: The UCC38C43DRG4 offers an adjustable frequency range from 100 kHz to 500 kHz, allowing designers to optimize their power supply for efficiency or component size.
• Voltage Feedforward: This feature provides enhanced response to input voltage variations, ensuring stable operation under varying conditions.
• Low Start-Up Current: The device boasts a start-up current of typically 0.5 mA, which is ideal for power-efficient designs.
• Current Mode Control: Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Trimmed Oscillator Discharge Current: This helps in maintaining oscillator frequency accuracy.

Applications

The UCC38C43DRG4 is suitable for a variety of applications, including:

• Off-line power supplies
• DC-DC converters
• Power supplies for battery-operated devices
• LED drivers
• Telecommunication equipment

Package and Availability

The device is available in a 14-pin SOIC package, providing a compact solution for space-constrained applications. The UCC38C43DRG4 is designed with industry-standard pinouts, which makes it easy to upgrade existing designs or integrate into new ones.

Quality and Support

Texas Instruments is known for its commitment to quality, and the UCC38C43DRG4 is no exception. It is designed to meet the rigorous standards required by industrial and consumer applications. Additionally, Texas Instruments provides comprehensive technical support and resources to assist designers in integrating this PWM controller into their power supply designs.

With its combination of features, the UCC38C43DRG4 is a robust solution for power management challenges, offering the performance and reliability that designers have come to expect from Texas Instruments.