The UCC2809PTR-2 from Texas Instruments is a versatile and efficient PWM (Pulse Width Modulation) controller designed for a wide range of power supply applications. This advanced integrated circuit is part of the UCC2809 family and is specifically engineered to facilitate the development of low-power, compact, and reliable power management solutions.

Key Features

• BiCMOS Technology: The UCC2809PTR-2 leverages BiCMOS technology, combining the advantages of both bipolar and CMOS transistors to offer low power dissipation, high input impedance, and fast switching speeds.
• Current-Mode Control: Current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Low Startup and Operating Current: With a startup current of less than 0.5µA and an operating current of 2.5mA, this device is optimized for low-power applications, contributing to energy savings and extended battery life in portable devices.
• Wide Supply Voltage Range: The UCC2809PTR-2 operates over a wide supply voltage range, accommodating various application requirements and ensuring versatility in design.
• Frequency Dithering: The inclusion of frequency dithering reduces electromagnetic interference (EMI), which is crucial for applications sensitive to noise.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is trimmed to ensure precise duty cycle clamping, which is essential for the protection of the power stage components.

Applications

The UCC2809PTR-2 is suitable for a variety of applications, including:

• Offline power supplies
• DC-DC converters
• Portable devices
• Telecommunication equipment
• Green-mode power supplies

Package and Availability

The UCC2809PTR-2 is available in a TSSOP-8 (Thin Shrink Small Outline Package) that offers a compact footprint for space-constrained applications. The device is designed for easy integration into various circuit designs and is widely available through Texas Instruments and authorized distributors.