Datasheet > NB672

NB672

更新时间： 2024-09-14 17:01:43

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
22页	769K
描述
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、+/-1.5A LDO 和缓冲参考输出

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NB672 数据手册

NB672/NB673

24V, High Current

Synchronous Buck Converter

With +/-1.5A LDO and Buffed Reference

The Future of Analog IC Technology

DESCRIPTION

FEATURES

•

Wide 5V to 24V Operating Input Range

6A Continuous Output Current and 8A Peak

Output Current (NB672)

The NB672/NB673 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 1.5A

sink/source LDO (VTT) and buffered low noise

reference (VTTREF).

•

8A Continuous Output Current and 10A

Peak Output Current (NB673)

Built-in +/- 1.5A VTTLDO

Low R_DS(ON) Internal Power MOSFETs

Proprietary Switching Loss Reduction

Technique

•

The fully integrated Buck converter of

NB672/NB673 is able to deliver 6A/8A

continuous output current and 8A/10A 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

OCP, OVP, UVP Protection and Thermal

Shutdown

•

Latch off Reset via EN or Power Cycle.

VDDQ Adjustable from 0.604V to 5.5V

The VTT LDO provides 1.5A sink/source

current capability and requires only 10uF

ceramic capacitance.

APPLICATIONS

•

Laptop Computer

Tablet PC

The VTTREF tracks VDDQ/2 with an excellent

1% accuracy.

Networking Systems

Server

Personal Video Recorders

Flat Panel Television and Monitors

Distributed Power Systems

Under voltage lockout is internally set as 4.5V.

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.

These two parts require minimum number of

external components and are available in QFN21

(3mmx4mm) package.

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

220nF

V_IN

5-22V

VDDQ

1.35V

VIN

BST

NB672/NB673

VDDQSEN

VINLDO

VCC

VTT

0.675V/2A

VTT

AGND

PGND

VTTREF VTTSEN

220nF

NB672/NB673 Rev. 1.02

www.MonolithicPower.com

4/30/2015

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

12 3 4 5 6 7...22

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与NB672相关器件

型号	品牌	获取价格	描述	数据表
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
NB681	MPS	获取价格	4.5-26V宽输入电压、6A、低静态电流、大电流同步降压变换器，搭载 2 位 VID

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