The UCC2801N from Texas Instruments is a versatile and efficient low-power BiCMOS current-mode pulse-width modulation (PWM) controller. Designed with precision and reliability in mind, this device is ideal for a wide range of power supply applications, including but not limited to, isolated and non-isolated AC-DC converters, off-line battery chargers, and DC-DC converters.

Key Features

• Low Start-Up and Operating Current: The UCC2801N boasts an ultra-low start-up current of 1µA and a low operating current of 2.5mA, making it an energy-efficient choice for power-sensitive designs.
• High-Frequency Operation: With an operational frequency range up to 1MHz, this PWM controller allows for smaller external components, resulting in compact power supply designs.
• Current Mode Control: The current mode architecture provides fast transient response and inherent cycle-by-cycle current limiting, enhancing the safety and performance of your power supply circuit.
• Voltage Feed-Forward: Voltage feed-forward compensation is included to improve the line regulation and reduce the design complexity.
• Drive Capability: It features a totem-pole output capable of delivering 1A peak current, suitable for driving a power MOSFET or IGBT directly.
• Automatic Feed-Forward Compensation: This feature helps in maintaining a stable loop performance over a wide range of input voltages.
• Under-Voltage Lockout (UVLO): Both line and low-side UVLO circuits are provided to ensure the controller is off unless it is within its operating range.

Applications

• Switching power supplies
• Power converters for telecom and industrial use
• AC-DC adapters for consumer electronics
• LED drivers
• Battery-powered equipment

Product Specifications

The UCC2801N operates over a temperature range of -40°C to 85°C and is available in an 8-pin PDIP (Plastic Dual-In-line Package) which is suitable for through-hole mounting. This device is designed to meet the stringent quality standards set by Texas Instruments, ensuring high reliability and performance for your power management solutions.

Conclusion

With its robust feature set and high-performance capabilities, the UCC2801N PWM controller from Texas Instruments stands out as an exceptional choice for designers looking to enhance the efficiency and compactness of their power supply systems.