The UCC3800PW is a versatile and efficient PWM (Pulse Width Modulation) controller from Texas Instruments designed to cater to a wide range of power supply applications. This device is part of the UCC38Cxx series, which are BiCMOS current-mode PWM controllers offering significant improvements over standard industry devices.

Key Features

• Low Start-Up and Operating Current: The UCC3800PW boasts a start-up current of 0.5 µA (typical) and an operating current of 2.5 mA (typical), making it an energy-efficient choice for modern power systems.
• Current Mode Control: This method of control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Trimmed Oscillator Discharge Current: Ensures consistent and accurate duty cycle limits, which is critical for reliable power supply operation.
• Automatic Feed-Forward Compensation: Helps maintain stable operation over a wide range of input voltages and output loads.
• High Current Totem Pole Output: Capable of directly driving a power MOSFET, the totem pole output streamlines the design process by reducing the need for additional components.
• Soft Start: The soft-start feature limits inrush current during start-up, contributing to the longevity of the device and the overall system.
• Wide Operating Range: The UCC3800PW operates at a voltage range from 4.5 V to 15 V, accommodating various application needs.

Applications

This PWM controller is ideal for a variety of power supply designs, including:

• Off-line power supplies
• DC-to-DC converters
• Power supplies for communication equipment
• Industrial power systems

Package and Availability

The UCC3800PW is available in a 14-pin TSSOP (Thin Shrink Small Outline Package), providing a compact solution for space-constrained applications. Texas Instruments ensures the availability of this controller, recognizing the importance of reliable and continuous supply for industrial and commercial clients.

By integrating the UCC3800PW into your power supply design, you can achieve a balance of performance, efficiency, and reliability, backed by the expertise and support of Texas Instruments.