Datasheet > NB675L

NB675L

更新时间： 2024-04-09 19:03:30

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
21页	1085K
描述
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 LDO 、缓冲参考输出和低静态电流

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NB675L 数据手册

NB675L

24V, High Current

Synchronous Buck Converter

With +/-1.0A LDO and Buffed Reference

NOT RECOMMENDED FOR NEW DESIGNS, REFER TO NB685A

DESCRIPTION

FEATURES

•

Wide 4.7V to 24V Operating Input Range

10A Continuous Output Current

12A Peak Output Current

Built-in +/- 1.0A VTTLDO

105μA Quiescent Current

Low R_DS(ON) Internal Power MOSFETs

Proprietary Switching Loss Reduction

Technique

The NB675L is the lower quiescent current

version of NB675. It provides a complete power

supply for DDR3, DDR3L and LPDDR2 memory

with the highest power density. It integrates a

high frequency synchronous rectified step-down

switch mode converter (VDDQ) with a 1.0A

sink/source LDO (VTT) and buffered low noise

reference (VTTREF).

NB675L is able to deliver 10A continuous

output current and 12A peak output current

over a wide input supply range with excellent

load and line regulation. The Buck converter

employs the Constant-On-Time (COT) control

scheme, which provides fast transient response

and eases loop stabilization.

•

Internal Soft Start

Output Discharge

500kHZ Switching Frequency for NB675L

OCP, OVP, UVP Protection and Thermal

Shutdown

•

VDDQ Adjustable from 0.6V to 5.5V

APPLICATIONS

The VTT LDO provides 1.0A sink/source

current capability and requires only 10uF

ceramic capacitance.

•

Laptop Computer

Tablet PC

Networking Systems

Server

Personal Video Recorders

Flat Panel Television and Monitors

Distributed Power Systems

The VTTREF tracks VDDQ/2 with an excellent

1% accuracy.

Under voltage lockout is internally set as 4.6V.

An open drain power good signal indicates

VDDQ is within its nominal voltage range.

Full protection features include OCP, OVP, and

thermal shut down.

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.

This part requires minimum number of external

components and is available in QFN21

(3mmx4mm) package.

TYPICAL APPLICATION

NB675L Rev. 1.1

1/19/2020

www.MonolithicPower.com

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

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