The UCC3813DTR-O from Texas Instruments is a versatile and efficient low-power pulse-width modulation (PWM) controller that operates in current-mode control. This device is part of the UCC3813x family of BiCMOS PWM controllers, which are designed to offer an optimal solution for power supply applications requiring efficient power management and precise current control.

Key Features

• Operating Voltage Range: The UCC3813DTR-O is capable of operating over a wide supply voltage range, typically from 10V to 20V, making it suitable for a variety of power systems.
• Low Startup and Operating Current: This PWM controller boasts a low startup current of typically 0.15 mA and an operating current of typically 2.5 mA, contributing to the overall efficiency of the power supply.
• Current-Mode Control: Current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• High-Frequency Operation: With the ability to support high-frequency operation up to 1 MHz, this device allows for smaller external components, reducing the size and cost of the power supply.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is trimmed for precise duty cycle clamp levels, which helps in limiting the maximum output duty cycle.
• Soft Start: The UCC3813DTR-O features a soft-start capability that prevents current overshoot and limits inrush current during startup.

Applications

The UCC3813DTR-O is ideal for a wide range of applications, including:

• DC to DC converters
• Off-line power supplies
• Telecommunications equipment
• Portable electronics
• Industrial and medical equipment

Package and Availability

The device is available in a surface-mount TSSOP-14 package, providing a compact footprint for space-constrained applications. The UCC3813DTR-O is also available in tape and reel packaging, facilitating efficient handling and manufacturing processes for high-volume production.

With its robust feature set, the UCC3813DTR-O from Texas Instruments is a powerful solution for designers looking to enhance the performance and reliability of their power management systems.