Datasheet > NB671LB

NB671LB

更新时间： 2024-09-14 17:01:11

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
21页	750K
描述
4.5-24V宽输入电压、6A、COT 同步降压变换器，具有低静态电流

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NB671LB 数据手册

NB671LB

24V, High Current

Synchronous Step-down Converter

The Future of Analog IC Technology

DESCRIPTION

FEATURES

The NB671LB is the low quiescent current

version of NB671. It is a fully integrated high

frequency synchronous rectified step-down

switch mode converter, which offers very

compact solutions to achieve 6A continuous

output current and 9A peak current over a wide

input supply range with excellent load and line

regulation. The NB671LB operates at high

efficiency over a wide output current load range.



Wide 4.5V to 24V Operating Input Range

6A Continuous Output Current

9A Peak Output Current

120μA Quiescent Current

Low R_DS(ON) Internal Power MOSFETs

Proprietary Switching Loss Reduction

Technique

1% Reference Voltage

Internal Soft Start



Constant-On-Time

(COT)

control

mode

Output Discharge

provides fast transient response and eases loop

stabilization.

500kHZ Switching Frequency

OCP, OVP, UVP Protection and Thermal

Shutdown

Latch off Reset via EN or Power Cycle.

Output Adjustable from 0.604V to 5.5V

Support 5V Output from 5.5V Input

Under voltage lockout is internally set as 4.2 V,

An open drain power good signal indicates the

output is within its nominal voltage range.



Full protection features include OCP, OVP, and

thermal shut down.

APPLICATIONS



Laptop Computer

Tablet PC

Networking Systems

Personal Video Recorders

Flat Panel Television and Monitors

Distributed Power Systems

The converter requires minimum number of

external components and is available in QFN16

(3mmx3mm) package.

The NB671LB is pin-to-pin compatible with

NB671 with a NC pin changed to LP#, which is

used to receive the power state command from

the system.

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

status, please visit MPS website under Products, Quality Assurance page.

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

6.8

V_IN

5.5-22V

220nF

V_OUT

BST

VIN

5V/6A

499k

NB671LB

73.2k

10k

220pF

GND

V_OUT

VOUT

LP#

AGND PGND

VCC

100k

NB671LB Rev. 1.02

12/28/2017

www.MonolithicPower.com

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

12 3 4 5 6 7...21

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与NB671LB相关器件

型号	品牌	获取价格	描述	数据表
NB672	MPS	获取价格	6A，24V，全集成恒定导通时间控制模式高效同步降压变换器，具有快速瞬态响应、+/-1.5
NB673	MPS	获取价格	8A, 24V，高效全集成恒定导通时间（COT）控制模式同步降压变换器，具有快速瞬态响应、
NB675	MPS	获取价格	24V, High Current Synchronous Buck Converter With 1.5A LDO and Buffed Reference
NB675GL	MPS	获取价格	24V, High Current Synchronous Buck Converter With 1.5A LDO and Buffed Reference
NB675L	MPS	获取价格	10A，24V，全集成恒定导通时间控制模式高效同步降压变换器，具有快速瞬态响应、+/-1A
NB676	MPS	获取价格	8A, 24V，高效全集成恒定导通时间（COT）控制模式同步降压变换器，具有快速瞬态响应、
NB676A	MPS	获取价格	8A, 24V，恒定导通时间（COT）控制模式同步降压变换器，具有低压差(LDO)调节器，
NB677	MPS	获取价格	8A, 24V高效全集成恒定导通时间（COT）控制模式同步降压变换器，具有快速瞬态响应、2
NB680	MPS	获取价格	4.8-26V 宽输入电压、低 Iq、大电流、固定 3.3V 输出-8A，带 100mA
NB680A	MPS	获取价格	5.5-26V宽输入电压、低静态电流、大电流、固定 3.36V-8A 同步降压转换器，搭载

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