Product Overview: Texas Instruments UCC3808ADTR-1

The UCC3808ADTR-1 is a low-power, biCMOS current-mode pulse-width modulation (PWM) controller designed by Texas Instruments. This device is optimized for efficient power management and is particularly suitable for use in switch-mode power supplies. With its advanced features and compact design, the UCC3808ADTR-1 is an ideal choice for a wide range of applications, including but not limited to, isolated and non-isolated power supplies, telecommunications equipment, and portable devices.

Key Features

• Current-Mode Control: The UCC3808ADTR-1 employs current-mode control which provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Low Start-Up and Operating Current: The device is designed with a low start-up current of 0.5µA and a low operating current of 1.5mA, making it an energy-efficient solution for power systems.
• Programmable Switching Frequency: The switching frequency of the UCC3808ADTR-1 is programmable up to 1MHz, allowing flexibility in the design of the power supply.
• Automatic Feed Forward Compensation: This feature helps in maintaining stable operation over a wide range of input voltages.
• High Current Totem Pole Output: The totem pole output is capable of driving a power MOSFET directly, simplifying the design and reducing component count.
• Soft Start: The UCC3808ADTR-1 includes a soft start feature to reduce stress on the power supply during startup.
• Under-Voltage Lockout (UVLO): Both line and low-side UVLO circuits ensure that the device remains off unless there is a sufficient supply voltage.

Applications

The UCC3808ADTR-1 is versatile and can be used in various applications such as:

• AC-DC Merchant Power Supply – Telecom and Server
• DC-DC Isolated Power Supply Modules
• Industrial and Medical Power Supplies
• Off-Line Power Converters

Package and Availability

The UCC3808ADTR-1 is available in a small-outline integrated circuit (SOIC) package and is offered in tape and reel form to support efficient assembly processes. Texas Instruments provides comprehensive technical support, including datasheets, reference designs, and application notes to facilitate the integration of this PWM controller into your power management systems.