Datasheet > NB681A

NB681A

更新时间： 2024-12-01 17:02:07

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
24页	1173K
描述
4.5-26V宽输入电压、6.5A、低静态电流、大电流同步降压变换器，搭载 2 位 VID

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中文翻译

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NB681A 数据手册

NB681A

28V, 6.5A, Low Iq,

Synchronous Buck Converter with 2-Bit VID

DESCRIPTION

FEATURES

The NB681A is a fully integrated, high-

frequency, synchronous, rectified, step-down,

switch-mode converter with 2-bit VID, especially

designed for IMVP8 applications—VCCIO,

PRIMCORE, V1.0A, EDRAM, EOPIO, and

other POLs (1.8V/2.5V/3.3V). It offers a very

compact solution to achieve a 6.5A continuous

output current and a 7.5A peak output current

over a wide input supply range.



Wide 4.5V to 28V Operating Input Range

VCCIO/PRIMCORE/EDRAM/EOPIO/V1.0A/

1.8V/2.5V/3.3V Compatible for IMVP8

Output Adjustable by 2-Bit VID

Low-Power Mode

25µA Low Quiescent Current

6.5A Continous Output Current

7.5A Peak Output Current

Selectable Ultrasonic Mode

Adaptive COT for Fast Transient

DC Auto-Tune Loop

Stable with POSCAP and Ceramic

Capacitors



The NB681A operates at high efficiency over a

wide output current load range based on MPS

proprietary switching loss reduction technology

and internal low Ron power MOSFETs.



1% Reference Voltage

Internal Soft Start

Output Discharge

OCL, OVP, UVP, and Thermal Shutdown

Latch-Off Reset via EN or Power Cycle

QFN-13 2mm x 3mm Package

Adaptive constant-on-time (COT) control mode

provides fast transient response and eases loop

stabilization. The DC auto-tune loop provides

good load and line regulation.

To avoid audible noise, the NB681A provides

low-power mode for power loss saving during

the low-power state and ultrasonic mode.

APPLICATIONS

Full protection features include OC limit, OVP,

UVP, and thermal shutdown.



Laptop Computers

Tablet PCs

Networking Systems

Servers

Personal Video Recorders

Flat Panel Televisions and Monitors

Distributed Power Systems

The converter requires a minimal number of

external components, and it is available in a

QFN-13 2mm x 3mm package.

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For

MPS green status, please visit the MPS website under Quality Assurance.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

GND

LP#

150kΩ

V_IN

220nF

4.5-24V

V_OUT

LP# MODE BST

VIN

1.2μH

1.8V/6A

22μF

VOUT

GND

NB681A

66μF

PGND

AGND

3V3

AGND

100kΩ

1μF

3.3V

GND

AGND

NB681A Rev. 1.02

7/28/2017

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

12 3 4 5 6 7...24

中文翻译

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与NB681A相关器件

型号	品牌	获取价格	描述	数据表
NB682	MPS	获取价格	4.5-26V宽输入电压、3A、宽输出、同步降压变换器，搭载 2 位 VID
NB685	MPS	获取价格	26 V，12 A，低静态电流，大电流同步降压变换器带+/- 1 A LDO 和缓冲参
NB685A	MPS	获取价格	4.5-26V宽输入电压、12A、低静态电流、大电流同步降压变换器，搭载 +/-1A LD
NB686	MPS	获取价格	4.5-26V宽输入电压、8A、低静态电流、大电流同步降压变换器，搭载 +/-1A LDO
NB6FAAH0-0-B	ETC	获取价格	N e u t r i k Â® P a r t N u m b e r G u i d
NB6FAH0-0-B	ETC	获取价格	N e u t r i k Â® P a r t N u m b e r G u i d
NB6FBH0-0-B	ETC	获取价格	N e u t r i k Â® P a r t N u m b e r G u i d
NB6G	GLENAIR	获取价格	Military Standard Connector Index
NB6HQ14M	ONSEMI	获取价格	2.5V 5GHz / 6.5Gbps Differential Input to 1.8V / 2.5V 1:4 CML Clock / Data Fanout Buffer
NB6HQ14MMNG	ONSEMI	获取价格	2.5V 5GHz / 6.5Gbps Differential Input to 1.8V / 2.5V 1:4 CML Clock / Data Fanout Buffer

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