Product Overview: Texas Instruments UCC3813DTR-3

The UCC3813DTR-3 is a highly sophisticated yet robust integrated circuit from Texas Instruments, designed to cater to the demanding requirements of modern power management applications. This device is part of the UCC3813x family of low-power, BiCMOS current-mode pulse-width modulators (PWMs) which are tailored to deliver precise power control and efficiency.

Key Features

• Optimized Performance: The UCC3813DTR-3 operates at a fixed frequency of 100kHz, which provides an optimal balance between efficiency and component size, allowing for compact power supply designs.
• Current-Mode Control: It employs current-mode control which offers inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Low Startup and Operating Current: The device boasts a low startup current (typically 0.5µA) and a low operating current (typically 1mA), contributing to the overall efficiency of the system.
• Highly Integrated: Integration features include an error amplifier, a precision reference, an oscillator, a PWM comparator, a shutdown circuit, and a totem-pole output stage capable of driving a power MOSFET or IGBT.
• Versatile Supply Voltage Range: The UCC3813DTR-3 can operate over a wide supply voltage range, typically from 10V to 16V, making it suitable for a variety of power supply circuits.
• Protection Features: It is equipped with an array of protection features such as undervoltage lockout (UVLO), which ensures the device operates at the correct voltage levels, and programmable soft start, which reduces stress on the power supply during startup.

Applications

The UCC3813DTR-3 is ideal for a range of applications where efficient power management is crucial. These include:

• Switching power supplies
• DC-DC converters
• Offline power supplies
• AC-DC adapters for consumer electronics
• Telecommunication equipment

Package and Availability

The device is offered in a TSSOP-14 (thin shrink small outline package) which is designed for space-conscious applications. The UCC3813DTR-3 is available in tape and reel packaging, facilitating easy integration into automated manufacturing processes.

With its combination of performance, integration, and protection features, the UCC3813DTR-3 from Texas Instruments stands out as a reliable and efficient solution for advanced power management systems.