Product Overview: UCC3813PWTR-3G4 by Texas Instruments

The UCC3813PWTR-3G4 is a high-performance integrated circuit designed and manufactured by Texas Instruments, a leader in semiconductor solutions. This device is part of the UCC3813x family of low-power BiCMOS current-mode pulse-width modulators (PWMs) that offer a range of features suitable for a variety of power supply applications.

Key Features

• High-Speed Operation: The UCC3813PWTR-3G4 operates at a frequency of up to 1 MHz, which allows for smaller components, reduced power consumption, and faster response times in power supply circuits.
• Low Startup and Operating Current: This device has a startup current of typically 0.15 mA and an operating current of 1.1 mA, ensuring high efficiency and low power loss during operation.
• Advanced BiCMOS Technology: The use of BiCMOS technology provides robustness and reliability, combining the strengths of both bipolar and CMOS transistors.
• Programmable Soft Start: The UCC3813PWTR-3G4 includes a soft-start feature that limits inrush current during startup, which helps to prevent stress on the power supply components.
• Error Amplifier: An integrated error amplifier with a wide bandwidth enhances the performance of the feedback loop, improving the overall stability and accuracy of the power supply.
• Pulse-by-Pulse Current Limiting: The device offers protection against overcurrent conditions by limiting the current in each pulse, thereby protecting the power supply and the load it powers.

Applications

The UCC3813PWTR-3G4 is designed for a variety of applications, including but not limited to:

• DC/DC Converters
• Offline Power Supplies
• Telecommunications Equipment
• Portable Electronics
• Switching Power Supplies

Package and Availability

This PWM controller is available in a TSSOP-14 (thin-shrink small-outline package) which is suitable for surface mount technology (SMT), ensuring compact and efficient use of PCB space. The part number UCC3813PWTR-3G4 indicates that this component is provided in tape and reel packaging, which is ideal for automated assembly processes.

For detailed specifications and application notes, designers and engineers are encouraged to consult the datasheet provided by Texas Instruments. The UCC3813PWTR-3G4 represents a reliable and efficient solution for advanced power management and is an exemplary product from Texas Instruments' extensive portfolio of power management devices.