NX2837CUPTR

Overview

The NX2837CUPTR is a dual-output power management integrated circuit manufactured by Microsemi Corporation. It integrates one synchronous buck converter and one low-dropout linear regulator (LDO) within a single package. The switching controller operates at a frequency of 350 kHz. The device supports an input voltage range of 9 V to a maximum limit, suitable for intermediate bus conversion applications. It is housed in a 10-VFSOP or 10-MSOP package with an exposed pad, measuring 3.00 mm in width. The component is designed for surface mount technology and functions reliably within an operating temperature range of 0°C to 70°C.

Feature Summary

• Integrates a synchronous buck converter and a linear regulator in a single compact package
• Features a fixed 350 kHz switching frequency for the DC-DC section
• Designed for surface mount assembly with an exposed thermal pad

Applications

• Intermediate bus conversion in telecommunications infrastructure
• Point-of-load regulation for digital signal processors
• Power management systems requiring combined switching and linear outputs

Procurement Notes

Verify the specific suffix 'CUPTR' corresponds to the Tape & Reel packaging configuration as documented in official Microsemi datasheets. Confirm that the 10-VFSOP/10-MSOP package dimensions match your PCB footprint requirements. Ensure the operating temperature range of 0°C to 70°C meets your environmental specifications before finalizing procurement orders.

Selection Notes

Select this component when a design requires both efficient high-current switching regulation and precise low-noise linear regulation from a single IC. The 350 kHz frequency offers a balance between efficiency and external component size. Consider the 10-pin MSOP/VFSOP package constraints regarding thermal dissipation through the exposed pad for adequate heat management in dense layouts.

Part Context

The NX2837 series belongs to Microsemi's PMIC portfolio, specifically targeting applications needing multi-rail power supplies. This part combines voltage-mode control for the buck stage with LDO capabilities. It serves as a solution for reducing board space compared to discrete implementations of separate regulators.

Replacement Considerations

Check for direct cross-reference part numbers from Microsemi or authorized distributors. Verify pin-to-pin compatibility and electrical parameter equivalence if substituting with other dual-output regulator ICs.