UCC3804N

AC DC Converters, Offline Switchers Overview

The UCC3804N is a low-power BiCMOS current-mode PWM controller designed for high-efficiency power conversion. It operates with a supply voltage range of 8.3V to 12V and supports switching frequencies up to 1 MHz. The device features a maximum duty cycle of 50% and provides a 1 A output drive capability. It includes an internal oscillator, error amplifier, and current limit circuitry. The component is housed in an 8-pin DIP package and functions within an operating temperature range of 0°C to 70°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode control architecture for improved line regulation and transient response.
• Integrates a precision oscillator and pulse-width modulation logic for stable operation.
• Includes built-in current limiting to protect the power stage during overload conditions.

AC DC Converters, Offline Switchers Applications

• Flyback converter designs
• Forward converter topologies
• Buck and Boost regulator circuits

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and environmental compliance. Ensure the ordering part number matches the required lead-free status and RoHS certification. Confirm availability through authorized distributors as manufacturing status may vary by region.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring low quiescent current and moderate switching speeds. It is suitable for isolated and non-isolated topologies where a 50% duty cycle limit is acceptable. Consider thermal management requirements based on the specified dissipation power and ambient operating conditions.

AC DC Converters, Offline Switchers Part Context

This device belongs to the UCC380x series of low-power BiCMOS controllers. It shares functional similarities with other members of the family but is distinguished by its specific frequency capabilities and pinout configuration. The series is widely used in general-purpose power supply designs requiring reliable current-mode control.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible alternatives such as the UC3804 or UCC3804NG4. Verify that substitute components maintain identical electrical characteristics and package dimensions before integration into existing designs.