NB676GQ-Z

Overview

The NB676GQ-Z is a synchronous buck converter with an integrated 5V LDO, manufactured by Monolithic Power Systems. It operates within an input voltage range of 6.5 V to 22 V and delivers up to 8 A output current at a fixed 5 V level. The device features a switching frequency of 500 kHz and a quiescent current of 205 uA, dropping to 2 uA in shutdown mode. It supports operation from -40°C to +125°C and is housed in a QFN-16 package.

Feature Summary

• Integrates a high-current synchronous buck regulator with a dedicated 5V linear output
• Supports wide input voltage ranges suitable for industrial power buses
• Includes shutdown functionality for enhanced power management

Applications

• Industrial control systems requiring dual voltage rails
• Embedded computing platforms needing stable logic and peripheral power
• Automotive electronics operating on standard vehicle bus voltages

Procurement Notes

Verify component authenticity through authorized channels due to limited availability status. Confirm package integrity upon receipt as the QFN-16 form factor requires careful handling. Ensure compliance with RoHS directives if required by your specific manufacturing standards before integration into final assemblies.

Selection Notes

Select this component when a combined buck and LDO solution is necessary to save board space. The 8 A capacity suits moderate load applications. Verify that the 500 kHz frequency aligns with EMI constraints. Consider thermal performance requirements given the high current density in the QFN-16 package during continuous operation.

Part Context

This part belongs to the NB676 series of power management ICs designed for robust industrial and automotive environments. It consolidates multiple regulation stages into a single compact footprint, reducing external component count compared to discrete solutions.

Replacement Considerations

NB676GQ-P is a verified alternative within the same series offering identical electrical specifications.