Datasheet > MIC2202_07

MIC2202_07

更新时间： 2024-09-13 10:57:23

品牌	Logo	应用领域
麦瑞 - MICREL		转换器稳压器
页数	文件大小	规格书
19页	566K
描述
High Efficiency 2MHz Synchronous Buck Converter 1μF Stable PWM Regulator

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MIC2202_07 数据手册

MIC2202

High Efficiency 2MHz Synchronous Buck

Converter 1µF Stable PWM Regulator

General Description

Features

The Micrel MIC2202 is a high efficiency 2MHz PWM

synchronous buck regulator. The fast 2MHz operation

along with a proprietary compensation scheme allows the

smallest possible external components. The MIC2202 can

operate with a 1µF ceramic output capacitor and a small,

low DC-resistance, 2.2µH inductor, reducing system size

and cost while allowing a high level of efficiency.

• Input voltage range: 2.3V to 5.5V

• Output down to 0.5V/600mA

• 2MHz PWM operation

• Stable with 1µF ceramic output capacitor.

• Ultra-fast transient response (up to 500kHz GBW)

• Internal compensation

• All ceramic capacitors

The MIC2202 operates from 2.3V to 5.5V input and

features internal power MOSFETs that can supply over

600mA of output current with output voltages down to

0.5V. The MIC2202 implements a constant 2MHz pulse-

width-modu-lation (PWM) control scheme which reduces

noise in sensitive RF, audio, and communications

applications. Additionally, the MIC2202 can be

synchronized to an external clock, or multiple MIC2202s

can easily be daisy-chained with the SYNCLOCK feature.

• >95% efficiency

• Fully integrated MOSFET switches

• Easily synchronized to external clock

• SYNCLOCK feature to daisy chain multiple 2202s

• Requires only 4 external components

• 1% line and load regulation

• Logic controlled micropower shutdown

• Thermal shutdown and current limit protection

• 10-pin MSOP and 10-pin 3mm×3mm MLF^®package

options

The MIC2202 has a high bandwidth loop (up to 500kHz)

which allows ultra fast transient response times. This is

very useful when powering applications that require fast

dynamic response such as CPU cores and RF circuitry in

high performance cellular phones and PDAs. The

MIC2202 is available in 10-pin MSOP and 10-pin 3mm ×

3mm MLF^®package options with an operating junction

temperature range from –40°C to +125°C.

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

Applications

• Cellular phones

• PDAs

• 802.11 WLAN power supplies

• FPGA/ASIC power supplies

• Dynamically adjustable power supply for CDMA/W-

CDMA RF power amps

• DSL modems

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

• Tape drives

___________________________________________________________________________________________________________

Typical Application

2.2µH

Efficiency 3.3V

V_OUT

OUT

3.3V

100

600mA

4.2V_IN

V_IN

2.3V to 5.5V

10k

5V_IN

SYNC_IN

1µF

SYNC_OUT

10nF

1.78k

L = 2.2µH

C_OUT= 1µF

Adjustable Output Synchronous Buck Regulator

0.1 0.2 0.3 0.4 0.5 0.6

OUTPUT CURRENT (A)

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

M9999-031907

March 2007

12 3 4 5 6 7...19

中文翻译

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与MIC2202_07相关器件

型号	品牌	获取价格	描述	数据表
MIC2202BML	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BML	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202BMLTR	MICREL	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BMLTR	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BMM	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202BMM	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, MSOP-10
MIC2202BMMTR	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, MSOP-10
MIC2202YML	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202YML	MICROCHIP	获取价格	2.5A SWITCHING REGULATOR, 2200kHz SWITCHING FREQ-MAX, PDSO10
MIC2202YMLTR	MICROCHIP	获取价格	2.5A SWITCHING REGULATOR, 2200kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, MLF-10

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