NB677GQ-P

Overview

The NB677GQ-P is a dual-output power management IC from Monolithic Power Systems, designed for efficient voltage regulation in compact footprints. It integrates one synchronous step-down (buck) converter and one low-dropout linear regulator (LDO). The device operates with an input voltage range of 6.5 V to 22 V and delivers up to 8 A on the buck output and 1 A on the LDO output. It features a fixed switching frequency of 500 kHz, a maximum operating temperature of +125°C, and is housed in a QFN-16 package.

Feature Summary

• Integrates a high-current synchronous buck converter and a dedicated LDO within a single compact package.
• Supports wide input voltage ranges suitable for automotive and industrial bus architectures.
• Includes integrated soft-start functionality to manage inrush current during startup.
• Features thermal shutdown protection to safeguard the device under overload conditions.

Applications

• Automotive infotainment systems requiring multiple regulated voltage rails
• Industrial control modules needing isolated or non-isolated power distribution
• Embedded computing platforms utilizing wide-input DC sources

Procurement Notes

Verify the specific suffix and tape-and-reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the QFN-16 package dimensions match your PCB footprint requirements. Ensure compatibility with the intended switching frequency and thermal management strategy for the target application environment.

Selection Notes

Select this component when a design requires both high-current switching regulation and a clean LDO output from a single wide-input source. Consider the thermal performance of the QFN-16 package relative to the expected load current. Verify that the 500 kHz switching frequency aligns with electromagnetic interference constraints and passive component size goals.

Part Context

This part belongs to the NB67x series of power management ICs from Monolithic Power Systems. These devices are engineered for applications demanding high efficiency and space savings. The series typically targets automotive and industrial sectors where reliability and wide operating temperature ranges are critical.

Replacement Considerations

Check for direct pin-compatible alternatives within the MPS NB67x family. Evaluate other dual-output PMICs from different manufacturers if supply chain diversification is required. Ensure any substitute matches the input voltage range, output currents, and package outline.