The UCC2807D is a sophisticated PWM controller from Texas Instruments designed to cater to a wide range of power supply applications. This device is part of the UCC2807x family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC2807D, in particular, is presented in an 8-pin SOIC package, making it suitable for space-constrained applications.

Key Features

• Frequency Range: The UCC2807D operates at a frequency range that is programmable from 100 kHz up to 1 MHz, allowing for flexibility in the design of the power supply circuit.
• Low Startup and Operating Current: This device boasts a low startup current of typically 100 µA and an operating current of typically 2.5 mA, contributing to the efficiency of the overall power system.
• Advanced BiCMOS Technology: The use of BiCMOS technology ensures that the UCC2807D combines the low-power capabilities of CMOS with the high-speed and high-current handling capabilities of bipolar transistors.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is trimmed to ensure precise duty cycle clamping, which is essential for reliable operation and protection of the power supply components.
• Dual Output Drive Stages: The device features dual output drive stages in push-pull configuration, which enables the direct driving of a transformer or the control of synchronous rectifier MOSFETs.

Applications

The UCC2807D is highly versatile and can be used in a variety of applications, including:

• DC to DC Converters
• Off-Line Power Supplies
• Telecommunications Equipment
• Portable Electronics
• Industrial Power Systems

Design Support

Texas Instruments provides comprehensive design support for the UCC2807D, including application notes, reference designs, and simulation tools to assist engineers in creating efficient, reliable power supply solutions. This support, combined with the device's features, makes the UCC2807D an excellent choice for designers looking to optimize their power supply designs for performance and size.