MIC22400

更新时间： 2024-09-29 04:59:07

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器开关
页数	文件大小	规格书
19页	1014K
描述
4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz

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MIC22400 数据手册

MIC22400

4A Integrated Switch Synchronous

Buck Regulator with Frequency

Programmable up to 4MHz

General Description

Features

The Micrel MIC22400 is a high efficiency 4A integrated

switch synchronous buck (step-down) regulator. The

MIC22400 is optimized for highest efficiency and achieves

over 90% efficiency while still switching at 1MHz over a

broad load range. The ultra high speed control loop keeps

the output voltage within regulation even under extreme

transient load swings commonly found in FPGAs and low

voltage ASICs. The output voltage can be adjusted down

to 0.7V to address all low voltage power needs. A full

range of sequence options are available with the

MIC22400. The enable/delay pin combined with the power

good pin allows multiple outputs to be sequenced in any

way on turn on and turn off. The RC (Ramp Control™) pin

allows the device to be connected to another MIC22400

family of products to keep the output voltages within a

certain ∆V on start up.

• Input voltage range: 2.6V to 5.5V

• Output voltage adjustable down to 0.7V

• Output current up to 4A

• Full sequencing and tracking ability

• Power on reset

• Efficiency > 90% across a broad load range

• Programmable frequency 800kHz to 4MHz

• Easy RC compensation

• Ultra fast transient response

• 100% maximum duty cycle

• Fully integrated MOSFET switches

• Micropower shutdown

• Thermal shutdown and current limit protection

• 20-pin 3mm x 4mm MLF^®

The MIC22400 is available in a 20-pin 3mm x 4mm MLF^®

and thermally enhanced 20-pin e-TSSOP with a junction

operating range from –40°C to +125°C.

• 20-pin e-TSSOP

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

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Applications

• High power density point of load conversion

• Servers and routers

• DVD recorders

• Computing peripherals

• Base stations

• FPGAs, DSP and low voltage ASIC power

Typical Application

Efficiency V = 3.3V

100

0.5

1.5

2 2.5 3 3.5 4 4.5

OUTPUT CURRENT (A)

MIC22400 4A Synchronous Buck Regulator

Sequencing & Tracking

Ramp Control is a trademark of Micrel, Inc.

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

M9999-022108-A

February 2008

12 3 4 5 6 7...19

中文翻译

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与MIC22400相关器件

型号	品牌	获取价格	描述	数据表
MIC22400_10	MICREL	获取价格	4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz
MIC22400_11	MICREL	获取价格	4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz
MIC22400YML	MICREL	获取价格	4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz
MIC22400YMLTR	MICREL	获取价格	暂无描述
MIC22400YML-TR	MICROCHIP	获取价格	7.5A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, QCC20
MIC22400YTSE	MICREL	获取价格	4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz
MIC22400YTSE	MICROCHIP	获取价格	10A SWITCHING REGULATOR, 4000kHz SWITCHING FREQ-MAX, PDSO20
MIC22400YTSETR	MICREL	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,TSSOP,20PIN,PLASTIC
MIC22400YTSE-TR	MICROCHIP	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,TSSOP,20PIN,PLASTIC
MIC22405	MICREL	获取价格	4A Integrated Switch High-Efficiency Synchronous Buck Regulator

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