The UCC2813DTR-3G4 is a high-performance, low-power, biCMOS current-mode PWM controller from Texas Instruments, designed for a wide range of power supply applications. This device is part of the UCC2813x family, which offers a variety of performance benefits and features tailored to improve the efficiency and reliability of power systems.

Key Features

• Operating Range: The UCC2813DTR-3G4 operates with a supply voltage range from 8.5V to 18V, making it versatile for various applications.
• Frequency: It features a fixed-frequency oscillator with a nominal frequency of 100kHz, which can be externally adjusted to cater to specific application needs.
• Current Mode Control: Its current mode control provides improved transient response, simplified loop compensation, and inherent protection against overcurrent conditions.
• Low Startup and Operating Current: The device boasts a low startup current of less than 0.5mA and a low operating current of 2.5mA, enhancing overall power efficiency.
• Drive Capability: It is capable of delivering 1A peak output current, suitable for driving a power MOSFET or IGBT directly.
• Trimmed Oscillator Discharge Current: This feature ensures consistent and accurate duty cycle limits to manage the power delivered to the load.
• Undervoltage Lockout (UVLO): Integrated UVLO with hysteresis ensures that the device operates at sufficient power levels, preventing malfunctions due to low input voltage.
• Thermal Shutdown: The UCC2813DTR-3G4 includes a thermal shutdown feature to protect against excessive temperature conditions.

Applications

The UCC2813DTR-3G4 is suitable for a variety of applications, including but not limited to:

• Offline and DC-to-DC power supplies
• Telecommunication equipment
• Industrial systems
• Consumer electronics

Package and Availability

This PWM controller is available in a thin shrink small-outline package (TSSOP), which is ideal for space-constrained applications. The part number UCC2813DTR-3G4 specifically refers to the tape and reel packaging option, facilitating automated assembly processes for high-volume production.

With its robust set of features and reliable performance, the UCC2813DTR-3G4 from Texas Instruments stands as a compelling choice for designers seeking to optimize their power supply solutions.