UC3825N

DC DC Switching Controllers Overview

The UC3825N is a high-speed PWM controller manufactured by Texas Instruments, housed in a 16-pin PDIP package. It supports multiple converter topologies including boost, flyback, forward, half-bridge, push-pull, and buck. The device operates with a switching frequency range of 340kHz to 460kHz and features a maximum duty cycle of 85%. It provides two output channels with a positive configuration, powered by a supply voltage between 8.4V and 30V. The unit functions within an ambient temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Supports versatile power conversion topologies such as buck, boost, flyback, forward, half-bridge, and push-pull configurations.
• Features dual transistor driver outputs configured for positive operation to drive external power switches.
• Includes integrated control characteristics like current limiting, frequency control, slope compensation, and soft-start functionality.

DC DC Switching Controllers Applications

• Boost converter designs
• Flyback power supply implementations
• Forward converter circuits
• Half-bridge power stages
• Push-pull transformer drivers

DC DC Switching Controllers Procurement Notes

Verify the specific datasheet revision and RoHS compliance status before procurement. Confirm that the PDIP-16 through-hole package aligns with the target PCB footprint requirements. Ensure the operating temperature range meets the environmental specifications of the final assembly. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity.

DC DC Switching Controllers Selection Notes

Select this component when a robust, multi-topology PWM controller is required for through-hole applications. The wide input voltage range accommodates various supply rails without additional regulation. The integrated soft-start and current limiting simplify protection circuit design. Verify that the 85% maximum duty cycle satisfies the specific voltage conversion ratio needs of the intended topology.

DC DC Switching Controllers Part Context

This device belongs to the UC3825 family of high-speed PWM controllers from Texas Instruments. It shares functional similarities with other variants in the series but is distinguished by its specific PDIP-16 packaging and commercial temperature rating. The component serves as a core control element in isolated and non-isolated DC-DC converter architectures.

DC DC Switching Controllers Replacement Considerations

UC3825DW

DC DC Switching Controllers FAQ

What is the maximum duty cycle supported by the UC3825N?

The UC3825N supports a maximum duty cycle of 85 percent.

Which power converter topologies are compatible with this controller?

It is compatible with boost, flyback, forward, half-bridge, push-pull, and buck topologies.