UCC2803N

Power Supply Controllers, Monitors Overview

The UCC2803N is a low-power BiCMOS current-mode PWM controller designed for versatile power supply topologies including Boost, Flyback, and Forward configurations. It operates with a switching frequency of 1 MHz and supports a maximum duty cycle of 100%. The device features a single output capable of delivering 1 A drive current. It functions within a supply voltage range of 3.6 V to 12 V and consumes 500 µA of supply current. Electrical characteristics include a rise time of 41 ns and a fall time of 44 ns. The component is housed in an 8-pin PDIP package and is rated for operation across a temperature range of -40 °C to 85 °C.

Power Supply Controllers, Monitors Feature Summary

• Supports multiple converter topologies such as Boost, Flyback, and Forward
• Enables high-frequency operation up to 1 MHz for compact designs
• Provides robust gate drive capability with 1 A output current
• Features 100% maximum duty cycle for continuous conduction modes

Power Supply Controllers, Monitors Applications

• Universal AC-DC adapters
• Battery chargers
• Low-power isolated DC-DC converters

Power Supply Controllers, Monitors Procurement Notes

Verify the specific package variant and manufacturing date code upon ordering. Confirm RoHS compliance status and ensure the supplier provides valid traceability documentation. Check for any recent product change notices that may affect pin compatibility or electrical specifications before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring a balance between low quiescent current and high peak drive capability. The wide operating voltage range accommodates various input conditions. Ensure the thermal design supports the specified ambient temperature limits and verify that the external components match the internal timing requirements for the desired switching frequency.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCC280x series of low-power BiCMOS PWM controllers from Texas Instruments. It shares functional similarities with other members like the UCC2803PWTR but differs in packaging and mounting style. The series is characterized by its ability to drive power stages efficiently while maintaining minimal standby power consumption.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.