The UCC3813N-3G4 is a high-performance, low-power, BiCMOS current-mode PWM controller from Texas Instruments. This device is part of the UCC3813 series, which is known for its robustness and reliability in various power management applications. The UCC3813N-3G4 is particularly designed to cater to the needs of offline and DC-to-DC fixed-frequency current-mode switching power supplies, offering a wide range of features that enhance system performance.

Key Features

• Operating Range: The UCC3813N-3G4 operates at a fixed frequency of 100kHz, which is ideal for applications requiring a balance between efficiency and component size.
• Voltage Range: This device is capable of handling a wide input voltage range, making it versatile for various power supply designs.
• Low Startup and Operating Current: It has a low startup current of 0.5mA (typical) and an operating current of 2.5mA (typical), which makes it suitable for energy-efficient applications.
• Enhanced Control Features: It includes features such as programmable soft start, under-voltage lockout with hysteresis, and a shutdown function that allows for better control over the power supply's performance.
• High Current Totem-Pole Output: The device boasts a high-current totem-pole output capable of driving a power MOSFET directly, simplifying design and reducing external component count.
• Protection Mechanisms: It offers protection features such as overcurrent protection and thermal shutdown, ensuring the safety and longevity of the power supply.

Applications

The UCC3813N-3G4 is suitable for a wide range of applications, including:

• AC/DC power supplies for personal computers, servers, and telecom systems
• DC/DC converters for distributed power systems
• Offline power supplies
• Adapters and battery chargers
• LED drivers and power factor correction circuits

Quality and Reliability

As with all Texas Instruments products, the UCC3813N-3G4 is manufactured to the highest quality standards, ensuring reliable performance in even the most demanding environments. Its robust design and comprehensive protection features make it a trusted choice for engineers and designers looking for a dependable PWM controller for their power management solutions.