Datasheet > MIC2183YQS

MIC2183YQS

更新时间： 2024-10-01 10:57:23

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
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描述
Low Voltage Synchronous Buck PWM Control IC

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MIC2183YQS 数据手册

MIC2183

Micrel, Inc.

MIC2183

Low Voltage Synchronous Buck PWM Control IC

General Description

Features

Micrel’s MIC2183 is a high efficiency PWM synchronous

buck control IC. With its wide input voltage range of 2.9V to

14V, the MIC2183 can be used to efficiently step voltages

down in 1- or 2-cell Li Ion battery powered applications, as

well as in fixed 3.3V, 5V, or 12V systems.

• Input voltage range: 2.9V to 14V

• >90% efficiency

• Oscillator frequency of 400kHz

• Frequency divide-by-two pin

• Frequency sync to 600kHz

• FreqOut oscillator output allows simple charge pump

implementation in low voltage systems

• Front edge blanking

Efficiencies over 90% are achievable over a wide range of

load conditions with the MIC2183’s PWM control scheme.

The operating frequency can be divided by two by raising the

• 5Ω output drivers (typical)

FREQ/2pintoV .Thisallowstheusertooptimizeefficiency

• Soft start

versus board space. It also allows the MIC2183 to be exter-

• PWM current mode control

nally synchronized to frequencies below its nominal 400KHz.

• 1µA shutdown current

The MIC2183 features an oscillator output, FreqOut, which

can be used to implement a simple charge pump in low

voltage applications. The output of the charge pump can be

• Cycle-by-cycle current limiting

• Frequency foldback short circuit protection

• Adjustable under-voltage lockout

• 16-pin narrow-body SOP and QSOP package options

fed into the gate drive power circuitry via the V P pin. This

featureallowsenhancedgatedrive,hencehigherefficiencies

Applications

at low input voltages.

MIC2183 also features a 1µA shutdown mode, and a pro-

grammable undervoltage lockout, making it well-suited for

portable applications.

• 3.3V to 2.5V/1.8V/1.5V conversion

• DC power distribution systems

• Wireless modems

• ADSL line cards

The MIC2183 is available in 16-pin SOP and QSOP packag-

ing options with a junction temperature range from -40°C to

+125°C.

• 1-and 2-cell Li Ion battery operated equipment

• Satellite Phones

Typical Application

Ω

MIC2183 EFFICIENCY

100

= 3.3V

OUT

= 2.5V

= 200kHz

OUTPUT CURRENT (A)

Adjustable Output Synchronous Buck Converter

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

M9999-042205

April 2005

12 3 4 5 6 7...12

中文翻译

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与MIC2183YQS相关器件

型号	品牌	获取价格	描述	数据表
MIC2183YQSTR	MICROCHIP	获取价格	SWITCHING CONTROLLER, 440kHz SWITCHING FREQ-MAX, PDSO16, LEAD FREE, QSOP-16
MIC2184	MICREL	获取价格	Low Voltage Buck PWM Control IC Final Information
MIC2184	MICROCHIP	获取价格	MIC2184 is a high efficiency PWM buck control IC. With its wide input voltage range of 2
MIC2184_05	MICREL	获取价格	Low Voltage Buck PWM Control IC
MIC2184BM	MICREL	获取价格	Low Voltage Buck PWM Control IC Final Information
MIC2184BQS	MICREL	获取价格	Low Voltage Buck PWM Control IC Final Information
MIC2184BQSTR	MICROCHIP	获取价格	Switching Controller, Current-mode, 440kHz Switching Freq-Max, BICMOS, PDSO16, QSOP-16
MIC2184YM	MICREL	获取价格	Low Voltage Buck PWM Control IC
MIC2184YMTR	MICREL	获取价格	SWITCHING CONTROLLER, 440kHz SWITCHING FREQ-MAX, PDSO16, LEAD FREE, SOP-16
MIC2184YQS	MICREL	获取价格	Low Voltage Buck PWM Control IC

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