The UCC2813DTR-3 is a high-performance, low-power, BiCMOS current-mode pulse width modulation (PWM) controller designed by Texas Instruments. It is a part of the UCC2813-x series, which are optimized for off-line and DC-to-DC converter applications offering the designer a cost-effective solution with minimal external components.

Key Features

• Operating Range: This device operates at a supply voltage range of 8.5V to 15V, making it versatile for various power supply designs.
• Current-Mode Control: The current-mode control provides improved transient response and simplified loop compensation.
• High-Frequency Operation: It supports up to 1 MHz operation, allowing for smaller components and faster response times.
• Low Startup and Operating Current: The UCC2813DTR-3 features a low startup current of typically 0.5 mA and an operating current of typically 2.5 mA, which enhances efficiency and reduces power consumption.
• Trimmed Oscillator Discharge Current: This feature helps in achieving consistent and accurate timing for all internal oscillations.
• Automatic Feed Forward Compensation: This enhances performance over a wide input voltage range.
• Linearity Enhanced Transconductance Error Amplifier: The built-in error amplifier allows for precise output voltage regulation.
• High-Current Totem Pole Output: The totem pole output is capable of driving a power MOSFET directly, which simplifies the design and reduces component count.

Applications

The UCC2813DTR-3 can be used in a wide range of applications, including:

• Off-Line Power Supplies
• DC-to-DC Converters
• Telecommunications Equipment
• Portable Devices
• Switching Power Supplies
• AC-DC Adapters for Consumer Electronics

Package and Availability

The device is available in a small-outline integrated circuit (SOIC) package, making it ideal for space-constrained applications. The “DTR” suffix indicates that it is provided in tape and reel packaging, suitable for automated assembly processes.

With its robust feature set and Texas Instruments' reputation for quality, the UCC2813DTR-3 PWM controller is an excellent choice for designers seeking a reliable and efficient solution for their power management needs.