The Texas Instruments UCC3813DTR-1 is a versatile and efficient PWM (Pulse Width Modulation) controller designed to cater to a wide range of power supply applications. This device is part of the UCC3813x family of BiCMOS current-mode PWM controllers that offer low-power operation with the robustness and precision required for high-quality power management solutions.

Key Features

• Operating Range: The UCC3813DTR-1 operates with a supply voltage ranging from 8.5V to 15V, making it suitable for various applications.
• Current Mode Control: This technique provides excellent output voltage regulation and reduces sensitivity to input voltage and output load variations.
• Low Startup and Operating Current: The device has a startup current of typically 0.5mA and an operating current of typically 2.5mA, ensuring energy-efficient operation.
• High-Frequency Operation: The controller supports up to 1MHz operation, which allows for smaller external components, resulting in compact and cost-effective power supply designs.
• Drive Capability: The UCC3813DTR-1 includes a totem-pole output capable of driving a power MOSFET or IGBT directly, simplifying the design.
• Soft Start: The built-in soft start function reduces inrush current during startup, enhancing system reliability.
• Protection Features: The device integrates multiple protection features such as under-voltage lockout (UVLO), overcurrent protection, and thermal shutdown.

Applications

The UCC3813DTR-1 is suitable for a broad range of applications, including:

• DC-DC Converters
• Offline Power Supplies
• Telecommunications Equipment
• Portable Electronics
• Industrial and Medical Equipment

Package and Availability

The UCC3813DTR-1 is available in a slim SOIC-8 package, which is ideal for space-constrained applications. The device is provided in tape and reel form, facilitating its use in high-volume production environments. Texas Instruments ensures the availability of this controller through its extensive distribution network, making it a reliable choice for designers and manufacturers around the globe.