The UCC28C43DGK is a high-performance, BiCMOS pulse-width modulator (PWM) controller from Texas Instruments designed for a wide range of power supply applications. This versatile component is part of the UCC28C4x series, known for its improved performance with the same pin configuration as the UC384x family, making it an excellent choice for both new designs and as a drop-in replacement for existing systems.

Key Features

• Flexible Operation: The UCC28C43DGK operates at a programmable frequency range from 100 kHz to 500 kHz, which can be adjusted using an external resistor and capacitor. This flexibility allows designers to optimize their power supply for efficiency or for reduced component size.
• Enhanced Performance: It features a trimmed oscillator discharge current and a tighter absolute reference voltage, ensuring reliable and consistent performance across various environmental conditions and over time.
• Improved Efficiency: The device includes a totem-pole output stage with high-current driving capability, ensuring efficient power MOSFET switching and reduced power losses.
• Protection Features: It comes with built-in under-voltage lockout (UVLO) with hysteresis, overcurrent protection, and an automatic shutdown feature to safeguard the system under abnormal operating conditions.

Applications

The UCC28C43DGK is suitable for a variety of applications including switch-mode power supplies, DC-DC converters, offline UPS systems, and other power conversion applications that require precise control and reliable operation.

Package and Availability

This device is available in an 8-pin VSSOP (DGK) package, providing a compact solution for space-constrained applications. Its surface-mount design allows for streamlined integration into modern PCB layouts. The UCC28C43DGK is available for order and can be sourced directly from Texas Instruments or through authorized distributors.

Additional Resources

For further information, including detailed specifications, application notes, and design resources, interested parties are encouraged to visit the official Texas Instruments website. There, one can access comprehensive technical documentation and support to facilitate the integration of the UCC28C43DGK into their projects.