MIC4722

更新时间： 2024-11-21 04:22:47

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
20页	568K
描述
3mm x 3mm 2.7MHz 3A PWM Buck Regulator

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MIC4722 数据手册

MIC4722

3mm x 3mm 2.7MHz 3A PWM Buck Regulator

General Description

Features

The Micrel MIC4722 is a high efficiency PWM buck (step-

down) regulator that provides up to 3A of output current.

The MIC4722 operates at 2.7MHz that makes it suitable

for next generation XDSL modems requiring operating

frequencies in excess of 2.4MHz and has proprietary

internal compensation that allows a closed loop bandwidth

of over 200KHz.

•

2.7 to 5.5V supply voltage

2.7MHz PWM mode

Output current to 3A

>92% efficiency

100% maximum duty cycle

Adjustable output voltage option down to 1V

Ultra-fast transient response

The low on-resistance internal p-channel MOSFET of the

MIC4722 allows efficiencies over 92%, reduces external

components count and eliminates the need for an

expensive current sense resistor.

Ultra-small external components

Stable with a 0.47µH inductor and a 4.7µF output

capacitor

The MIC4722 operates from 2.7V to 5.5V input and the

output can be adjusted down to 1V. The devices can

operate with a maximum duty cycle of 100% for use in low-

dropout conditions.

•

Fully integrated 3A MOSFET switch

Micropower shutdown

Thermal shutdown and current limit protection

Pb-free 12-pin 3mm x 3mm MLF^®package

–40°C to +125°C junction temperature range

The MIC4722 is available in the exposed pad 12-pin

3mm x 3mm MLF^®package with a junction operating

range from –40°C to +125°C.

Applications

•

5V or 3.3V Point of Load Conversion

Telecom/Networking Equipment

Set Top Boxes

Storage Equipment

Video Cards

Typical Application

MIC4722

3A 2.7MHz Buck Regulator

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-090507-B

September 2007

12 3 4 5 6 7...20

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与MIC4722相关器件

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MIC4722_10	MICREL	获取价格	3mm x 3mm 2.7MHz 3A PWM Buck Regulator
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MIC4722YMLTR	MICREL	获取价格	暂无描述
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MIC4723_08	MICREL	获取价格	3A 2MHz Integrated Switch Buck Regulator
MIC4723YML	MICREL	获取价格	3A 2MHz Integrated Switch Buck Regulator
MIC4723YML	MICROCHIP	获取价格	11A SWITCHING REGULATOR, 2200kHz SWITCHING FREQ-MAX, PDSO12
MIC4723YMLTR	MICROCHIP	获取价格	11A SWITCHING REGULATOR, 2200kHz SWITCHING FREQ-MAX, PDSO12, 3 X 3 MM, GREEN, MLF-12