Datasheet > NB680A

NB680A

更新时间： 2024-12-01 17:02:11

品牌	Logo	应用领域
芯源 - MPS		转换器
页数	文件大小	规格书
18页	882K
描述
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 100mA LDO 和 LP# Vout 扩展功能

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NB680A 数据手册

NB680A

28V, Low Iq, High-Current, Fixed 3.36V, 8A,

Synchronous Buck Converter

with 100mA LDO and LP# Vout Scaling

DESCRIPTION

FEATURES

The NB680A is a fully integrated, high-

frequency, synchronous, rectified, step-down,

switch-mode converter with a fixed 3.36V Vout

and low-power mode voltage scaling. It offers a

very compact solution to achieve an 8A

continuous output current and a 10A peak

output current over a wide input supply range

with excellent load and line regulation.



Wide 5.5V to 28V Operating Input Range

Fixed 3.36V V_OUT(+1.8% of 3.3V)

LP# Output Voltage Scaling (-3% of 3.3V)

Ultrasonic Mode

100μA Low Quiescent Current

8A Continuous and 10A Peak Output

Current

Adaptive COT for Fast Transient

DC Auto-Tune Loop

Stable with POSCAP and Ceramic Output

Capacitors

250 kHz CLK for External Charge Pump

Built-In 3.3V, 100mA LDO with Switch Over

1% Reference Voltage

Internal Soft Start

Output Discharge



The NB680A 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.



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.

700kHZ Switching Frequency

OCP, OVP, UVP, and Thermal Shutdown

Latch-Off Reset via EN or Power Cycle

QFN-12 2mm x 3mm Package

The NB680A provides a fixed 3.3V LDO, which

can be used to power the external peripheries,

such as the keyboard controller in laptops.

Also, a 250kHz CLK is available on the NB680A.

Its output can be used to drive an external

charge pump, generating gate drive voltage for

the load switches without reducing the main

converter’s efficiency.

APPLICATIONS



Laptop Computers

Tablet PCs

Networking Systems

Servers

Flat Panel Televisions and Monitors

Distributed Power Systems

Full protection features include OC limit, OVP,

UVP, and thermal shutdown.

NB680A requires a minimum number of external

components and is available in a QFN-12

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

3.3Ω

V_IN

5.5V-24V

220nF

1.5μH

V_OUT

BST

CLK

VIN

LP#

3.36V/8A

22μF

LP#

NB680A

22μF*3

VOUT

GND

PGND

AGND

3.3V/

LDO

100mA

VCC

100kΩ

GND

AGND

4.7μF

1μF

NB680A Rev. 1.03

7/27/2017

www.MonolithicPower.com

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

12 3 4 5 6 7...18

中文翻译

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与NB680A相关器件

型号	品牌	获取价格	描述	数据表
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
NB681A	MPS	获取价格	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
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

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