Product Overview: UCC3808ADTR-1G4

The UCC3808ADTR-1G4, manufactured by Texas Instruments, is a low-power, BiCMOS current-mode pulse-width modulation (PWM) controller. It is designed for a wide range of power supply applications, including isolated and non-isolated converters, and is particularly suited for low-power applications due to its low startup and operating currents.

Key Features

• Low Startup and Operating Current: The device features a startup current of typically 0.15 mA and an operating current of typically 0.7 mA, making it an energy-efficient solution for power supply designs.
• Current-Mode Control: This PWM controller operates with current-mode control, providing inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Wide Supply Voltage Range: The UCC3808ADTR-1G4 operates over a wide supply voltage range from 4.5V to 15V, accommodating various application requirements.
• Frequency Programmability: The switching frequency is programmable from 10 kHz to 1 MHz, allowing designers to optimize their designs for efficiency or component size.
• Drive Capability: The device can directly drive a 1A peak current into the gate of a power MOSFET, ensuring robust power stage control.
• Soft Start: It includes a soft-start feature that limits inrush current during startup, which can help prevent system stress and extend component life.

Applications

The UCC3808ADTR-1G4 is versatile and can be used in a variety of applications, such as:

• DC-to-DC Converters
• Off-line Power Supplies
• AC-to-DC Adapters
• Telecom Power Supplies
• Portable Device Chargers

Package and Availability

This PWM controller is available in a small-outline integrated circuit (SOIC) package, making it suitable for compact power supply designs. The device's part number UCC3808ADTR-1G4 indicates that it is provided in tape and reel packaging, which is ideal for automated assembly processes.

Conclusion

The UCC3808ADTR-1G4 from Texas Instruments is a reliable and efficient solution for designers looking to create compact, low-power, and high-performance power supplies. Its robust feature set and wide range of applications make it a valuable component in the power management industry.