The UCC2801PW from Texas Instruments is a versatile and high-performance low-power BiCMOS current-mode pulse-width modulation (PWM) controller. This advanced controller is designed for a wide range of power supply applications, offering precise regulation and efficient power management.

Key Features

• Advanced BiCMOS Technology: This technology combines the low power consumption of CMOS with the high-speed operation of bipolar transistors, resulting in a highly efficient PWM controller.
• Wide Supply Voltage Range: The UCC2801PW operates over a supply voltage range of 4.5V to 5.5V, making it suitable for various applications.
• Low Startup and Operating Current: The device features a low startup current of 0.5µA and a low operating current of 2.5mA, contributing to the overall efficiency of the power supply design.
• High Current Totem Pole Output: The high current totem pole output can drive a power MOSFET or IGBT directly, which simplifies the design and reduces external component count.
• Current Mode Control: This feature provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Frequency Oscillation: The UCC2801PW has an internally fixed frequency of 1MHz, which allows for the use of smaller external components, reducing the overall size of the power supply.

Applications

The UCC2801PW is ideal for a range of applications, including:

• DC to DC converters
• Off-line power supplies
• Portable devices
• Telecommunication equipment
• Industrial systems

Product Specifications

Enclosed in a TSSOP-8 package, the UCC2801PW is designed for surface mount technology, allowing for a compact footprint on the PCB. The device also features undervoltage lockout with hysteresis, programmable soft start, and an error amplifier for feedback control.

Conclusion

The UCC2801PW PWM controller by Texas Instruments is a sophisticated solution for designers looking to enhance power supply performance while maintaining efficiency and reliability. Its comprehensive set of features makes it a compelling choice for a wide array of power management applications.