The UCC3802D from Texas Instruments is a versatile and efficient low-power pulse-width modulation (PWM) controller. Designed using BiCMOS technology, it offers an optimal solution for power supply applications requiring low power consumption and high performance. This controller is particularly suitable for off-line and DC-to-DC converter applications, providing precise regulation and reliability.

Key Features

• Low Startup and Operating Current: The UCC3802D stands out with its ultra-low startup current of 0.5 µA and operating current of 2.5 mA, making it an energy-efficient choice for modern electronic applications.
• Current Mode Control: With its current mode control, the device provides fast response to load transients and excellent loop stability.
• Wide Supply Voltage Range: The device operates over a wide supply voltage range from 4.5V to 20V, accommodating various application requirements.
• Trimmed Oscillator Discharge Current: The oscillator's discharge current is trimmed to ensure precise duty cycle clamping, which is critical for the protection and consistency of the power supply.
• Automatic Feed-Forward Compensation: This feature enhances the performance by compensating for input voltage variations without the need for additional components.
• High Current Totem-Pole Output: The output stage can source or sink 1A peak current, which is suitable for driving a power MOSFET directly.
• Undervoltage Lockout (UVLO): The built-in UVLO function ensures that the controller operates only when the supply voltage is sufficient, preventing malfunctions.

Applications

The UCC3802D is ideal for a wide range of applications, including:

• Switch Mode Power Supplies (SMPS)
• DC-DC Converters
• Offline Power Converters
• Telecommunication Equipment Power Supplies
• Industrial Power Systems

Quality and Reliability

Texas Instruments ensures that the UCC3802D meets the highest quality and reliability standards. The device is available in an 8-pin SOIC package, providing a compact solution for space-constrained applications. With its robust design and advanced features, the UCC3802D is a top choice for designers looking to optimize their power management systems.