The UCC3809P-2 is a versatile PWM (Pulse Width Modulation) controller integrated circuit manufactured by Texas Instruments, specifically designed for power supply applications. This device is part of the UCC3809 family and is characterized by its economy low-power operation and a wide range of features that make it suitable for a variety of switched-mode power supplies.

Key Features

• Programmable Switching Frequency: The UCC3809P-2 allows users to set the switching frequency anywhere from 4 kHz to 1 MHz, offering flexibility for different applications and enabling the optimization of efficiency and component size.
• Low Startup and Operating Current: This IC has a low startup current of typically 0.5 µA and a low operating current of typically 2.5 mA, making it an energy-efficient choice for battery-operated devices.
• Peak Current Mode Control: It employs peak current mode control to provide inherent cycle-by-cycle current limiting and ease of loop compensation.
• Trimmed Oscillator Discharge Current: The oscillator's discharge current is accurately trimmed to ensure precise frequency control.
• Feedforward Compensation: The inclusion of feedforward input allows for immediate response to input voltage changes, enhancing the performance under varying conditions.
• Drive Capability: The UCC3809P-2 can directly drive a MOSFET or IGBT, simplifying the design and reducing external component count.

Applications

The UCC3809P-2 is suitable for a wide range of applications, including:

• Off-line power supplies
• DC-DC converters
• AC-DC adapters and chargers
• Telecommunication power supplies
• Portable electronics

Package and Quality

The device is offered in an 8-pin PDIP (Plastic Dual-In-Line Package), making it easy to integrate into various PCB designs. Texas Instruments ensures high-quality standards, and the UCC3809P-2 is no exception, providing reliable performance for critical power management applications.

With its combination of features, the UCC3809P-2 from Texas Instruments stands out as a high-performance, energy-efficient solution for designers looking to optimize their power supply systems.