NB676AGQ-Z The NB676AGQ-Z by Monolithic Power Systems is a 21V, 8A COT synchronous buck regulator. It is designed for high-current system rails in modern gaming laptops.
Mfr Part #:

NB676AGQ-Z

Available from 1 distributors
Mfr Name: Monolithic Power Systems
Monolithic Power Systems
The NB676AGQ-Z by Monolithic Power Systems is a 21V, 8A COT synchronous buck regulator. It is designed for high-current system rails in modern gaming laptops.
Total Stock: 6,000 pcs

NB676AGQ-Z Available from 1 distributor

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6,000 pcs
6000 pcs On Request 1 On Request On Request 1428+ On Request On Request

NB676AGQ-Z Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Mounting Type
Package / Case
Regulator Type
SVHC Present
Topology
Voltage

NB676AGQ-Z Description

Short technical summary and product information.

The NB676AGQ-Z from Monolithic Power Systems is a compact 21V, 8A COT synchronous buck regulator. It is engineered for high-current system rails, commonly found in modern gaming laptops. This IC operates at a fixed or high switching frequency, making it suitable for compact motherboard layouts.

 

This regulator is frequently utilized for robust 5V high-current rails in performance laptops, such as the Lenovo Legion Slim and ASUS TUF A17 RTX 4070 series. The NB676AGQ-Z is identified by specific MPS top markings like AKLD, AKLG, AKLE, AKLF, and AKLX, which are part of the AKL* marking family exclusively for the NB676AGQ-Z batch. These markings aid engineers in confirming the correct IC and preventing confusion during gaming motherboard repairs.

 

Technicians commonly employ this IC to address issues such as 5V rail drop, no power, auto-restart, unstable loads, and VRM heating problems. The device comes in a QFN-16 (3x3mm) package, designed for surface mount applications.

NB676AGQ-Z Quick Information

Product Type: Synchronous Buck Regulator
Series: NB676A
Canonical Name: NB676AGQ-Z Synchronous Buck Regulator
Subcategory: DC-DC Switching Regulator

NB676AGQ-Z Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

NB676AGQ-Z Features

  • 21V, 8A COT synchronous buck regulator.
  • Compact QFN-16 (3x3mm) package.
  • High switching frequency for compact layouts.
  • Ideal for 5V high-current rails.
  • Used in gaming laptops.

NB676AGQ-Z Applications

  • Powers high-current system rails.
  • Supports gaming laptop VRMs.
  • Suitable for Lenovo Legion Slim.
  • Used in ASUS TUF A17 RTX 4070.
  • Fixes 5V rail drop issues.

NB676AGQ-Z FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the NB676AGQ-Z?

21V.

What is the package type of the NB676AGQ-Z?

QFN-16.

What is the output current of the NB676AGQ-Z?

8A.

What is the regulator topology?

Synchronous Buck with COT control.

What is the switching frequency?

High.

What is the mounting type?

Surface Mount.

What is the package size?

3x3mm.

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