Product Overview: Texas Instruments UCC3800

The UCC3800 from Texas Instruments is a versatile and efficient low-power pulse-width modulation (PWM) controller designed for a wide range of power supply applications. This integrated circuit is part of a family of BiCMOS switch-mode controller devices that offer a variety of features to suit different power management needs.

Key Features

• Low Startup and Operating Current: The UCC3800 boasts an impressively low startup current of typically 0.5 µA and an operating current of 2.5 mA, making it an ideal choice for power-sensitive applications.
• Flexible Power Supply Range: This controller operates over a wide supply voltage range from 4.5V to 16V, accommodating various input voltages and system requirements.
• Advanced PWM Control: It incorporates advanced PWM control, including features such as programmable soft start, under-voltage lockout (UVLO), and error amplification, ensuring precise power delivery and system stability.
• Frequency Oscillation: The device features an internally fixed or externally adjustable frequency oscillation, providing designers with the flexibility to optimize their power supply design for specific applications.
• Drive Capability: With its totem-pole output, capable of delivering 1A peak current, the UCC3800 can directly drive the gate of a power MOSFET, simplifying the design and reducing component count.

Applications

The UCC3800 is suitable for a variety of applications, including:

• DC to DC converters
• Offline power supplies
• AC to DC adapters
• Battery chargers
• Power supply modules for consumer electronics

Design Support

Texas Instruments provides comprehensive design support for the UCC3800, including application notes, reference designs, and simulation tools to assist engineers in optimizing their power supply designs. With its robust feature set and flexible capabilities, the UCC3800 is a reliable and cost-effective solution for a wide range of power management challenges.