Product Overview: UCC3813DTR-3G4 from Texas Instruments

The UCC3813DTR-3G4 is a high-performance, fixed-frequency current-mode PWM controller designed by Texas Instruments for a wide range of power supply applications. This integrated circuit is part of the UCC3813x family of devices, which are known for their reliability, efficiency, and precision in controlling power conversion systems.

Key Features:

• Operating Frequency: The UCC3813DTR-3G4 operates at a frequency of 100kHz, providing a good balance between efficiency and component size, allowing for compact power supply designs.
• Low Startup and Operating Current: This device boasts a low startup current of 0.15mA and a low operating current of 1.1mA, ensuring minimal power consumption during both startup and steady-state operation.
• Current Mode Control: The current mode control scheme provides fast transient response and excellent loop stability, making it easier to design reliable power supplies with good dynamic characteristics.
• High Peak Current Drive: With a peak current drive capability of +/-1A, the UCC3813DTR-3G4 can effectively drive power MOSFETs, ensuring robust power stage operation.
• Trimmed Oscillator Discharge Current: The discharge current of the internal oscillator is trimmed, which helps to achieve a more accurate duty cycle limit.
• Soft Start: The soft start function reduces inrush current during startup, which can prevent stress on the power supply components and improve system reliability.

Applications:

The UCC3813DTR-3G4 is suitable for a variety of applications, including:

• DC to DC converters
• Off-line power supplies
• Telecommunication equipment
• Industrial power systems
• Portable electronics
• Switching power supplies

Package and Availability:

The device is available in a thin shrink small-outline package (TSSOP), specifically in a 14-pin configuration. The UCC3813DTR-3G4 is offered in tape and reel packaging for easy integration into automated manufacturing processes, ensuring efficient handling and assembly.

With its robust feature set and Texas Instruments' commitment to quality, the UCC3813DTR-3G4 stands out as a versatile and reliable choice for designers looking to develop efficient and compact power supply solutions.