UC3573N

DC DC Switching Controllers Overview

The UC3573N is a Buck Pulse Width Modulator and stepdown voltage regulator manufactured by Texas Instruments. It operates within a supply voltage range of 4.75V to 30V. The device features a bipolar process and utilizes an 8-pin PDIP package. It functions as a voltage-mode switching controller with a maximum switching frequency of 115kHz and provides an output current capability of 0.7A. This component is classified as NRND (Not Recommended for New Designs) and is currently obsolete.

DC DC Switching Controllers Feature Summary

• Voltage-mode buck PWM control architecture
• Integrated stepdown voltage regulation
• Bipolar manufacturing process

DC DC Switching Controllers Applications

• DC-DC switching controllers
• Power management systems
• Stepdown voltage regulation circuits

DC DC Switching Controllers Procurement Notes

Verify the obsolete status and NRND classification before procurement. Confirm availability through authorized distributors or secondary market suppliers like Rochester Electronics, as standard manufacturing has ceased. Ensure compatibility with existing circuit designs due to the lack of active support.

DC DC Switching Controllers Selection Notes

Consider that this part is obsolete and not recommended for new designs. Evaluate alternative modern buck regulators from Texas Instruments or other manufacturers. Verify pinout compatibility if substituting with similar legacy parts like the UC3573D. Assess long-term supply chain stability for production runs.

DC DC Switching Controllers Part Context

The UC3573N belongs to Texas Instruments' Power Management (PMIC) series, specifically categorized under DC-DC Switching Controllers. It is designed for applications requiring efficient stepdown voltage conversion using pulse width modulation techniques in a compact 8-pin DIP format.

DC DC Switching Controllers Replacement Considerations

The UC3573D is listed as a similar available substitute from Rochester Electronics.