NB669GQ-Z

Description：IC REG DL BUCK/LINEAR SYNC 16QFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR)

SKU:de93091f6754 Category: Voltage Regulators - Linear + Switching Brand: Monolithic Power Systems Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG DL BUCK/LINEAR SYNC 16QFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR)
Topology：Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Number of Outputs：2
Frequency - Switching：500kHz
Voltage/Current - Output 1：5V, 6A
Voltage/Current - Output 2：5V, 100mA
Voltage/Current - Output 3：-
w/LED Driver：No
w/Supervisor：No
w/Sequencer：No
Voltage - Supply：6.5V ~ 22V
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：16-PowerVFQFN
Supplier Device Package：16-QFN (3x3)
Grade：-
Qualification：-

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NB669GQ-Z

Overview

The NB669GQ-Z is a synchronous step-down switching regulator manufactured by Monolithic Power Systems. It operates with an input voltage range of 6.5 V to 22 V and provides a fixed 5 V output at up to 6 A. The device integrates an LDO for auxiliary power rails. Key electrical parameters include a 500 kHz switching frequency, 220 uA quiescent current, and 1 uA shutdown supply current. It supports operation from -40°C to +125°C in a QFN-16 package.

Feature Summary

Integrates a secondary low-dropout regulator (LDO) alongside the primary buck converter
Utilizes synchronous rectification for improved conversion efficiency
Includes a dedicated shutdown pin for power management control

Applications

Point-of-load regulation for embedded systems
Power distribution in industrial equipment
Supplying power to microprocessors and digital logic circuits

Procurement Notes

Verify component authenticity through authorized channels due to limited availability status. Confirm RoHS compliance details via official documentation before integration. Ensure ordering suffixes match exact specifications as distributors may list variants differently. Cross-reference datasheet revisions to validate current manufacturing status and lead times.

Selection Notes

Select this component when a fixed 5 V rail and an additional LDO output are required within a single package. The 6 A capacity suits moderate load applications. Evaluate thermal performance requirements given the QFN-16 footprint. Compare against adjustable regulators if flexible output voltages are needed instead of the fixed configuration.

Part Context

This part belongs to the NB669 series of high-current synchronous buck converters. It is designed for applications requiring integrated linear regulation capabilities. The QFN-16 package facilitates compact PCB layouts. It serves as a power management solution for systems needing multiple regulated voltages from a single switching stage.