Product Overview: Texas Instruments UCC3808DTR-2

The UCC3808DTR-2 is a low-power, BiCMOS current-mode pulse-width modulation (PWM) controller from Texas Instruments. This integrated circuit is designed for a wide range of power supply applications and is particularly well-suited for use in switch-mode power supplies (SMPS) and DC-to-DC converters. The device offers a unique combination of features, performance, and reliability, making it an excellent choice for designers looking to optimize power management in their systems.

Key Features

• Current-Mode Control: Provides fast response to load changes and inherent protection against short-circuit conditions.
• Low Start-Up and Operating Current: The UCC3808DTR-2 boasts a start-up current of typically 0.15 mA and an operating current of 1.1 mA, enhancing the efficiency of the end application.
• Trimmed Oscillator Discharge Current: Ensures consistent and reliable performance of the PWM operation across different units and environmental conditions.
• Dual-Mode Operation: Offers both voltage feed-forward and frequency jittering, which helps in reducing electromagnetic interference (EMI).
• Programmable Soft Start: Limits inrush current and provides a controlled voltage ramp, which is especially useful in preventing stress on the power supply components during start-up.
• High Current Totem Pole Output: Capable of directly driving a power MOSFET, thereby simplifying the design and reducing component count.

Applications

The versatility of the UCC3808DTR-2 makes it suitable for a variety of applications, including isolated and non-isolated power supplies, telecommunications equipment, consumer electronics, and industrial systems. Its robust design also makes it an ideal choice for automotive and battery-powered applications where efficiency and reliability are critical.

Package and Availability

The device is available in a small-outline integrated circuit (SOIC) package, which is ideal for space-constrained applications. The UCC3808DTR-2 is also available in tape and reel format, facilitating efficient handling and manufacturing processes for high-volume production.