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MIC2141BM5

更新时间： 2024-11-06 10:57:23

品牌	Logo	应用领域
麦瑞 - MICREL		转换器
页数	文件大小	规格书
16页	843K
描述
Micropower Boost Converter

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数据手册

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MIC2141BM5 数据手册

MIC2141

Micropower Boost Converter

General Description

Features

The MIC2141 is a micropower boost switching regulator

that can operate from 3- or 4-cell nickel-metal-hydride

batteries or a single Li-ion cell. This regulator employs a

constant 330kHz, fixed 18% duty-cycle, gated-oscillator

architecture.

• Implements low-power boost, SEPIC, or flyback

• 2.2V to 14V input voltage

• 330kHz switching frequency

• <2µA shutdown current

• 70µA quiescent current

• 1.24V bandgap reference

The MIC2141 can be used in applications where the

output voltage must be dynamically adjusted. The device

features

a control signal input which is used to

• Typical output current 1mA to 10mA

• SOT23-5 package

proportionally adjust the output voltage. The control signal

input has a gain of 6, allowing a 0.8V to 3.6V control signal

to vary a 4.8V to 22V output.

Applications

The MIC2141 requires only three external components to

operate and is available in a tiny 5-pin SOT-23 package for

space and power-sensitive portable applications. The

MIC2141 draws only 70µA of quiescent current and can

operate with an efficiency exceeding 85%.

• LCD bias supply

• CCD digital camera supply

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

Control Voltage

vs. Output Voltage

10µH

Variable

V_OUT

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

V_C*

(from DAC)

MIC2141

10µF

V_OUT(V)

DAC-Controlled LCD Bias Voltage Supply

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

M9999-122006

December 2006

12 3 4 5 6 7...16

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与MIC2141BM5相关器件

型号	品牌	获取价格	描述	数据表
MIC2141-BM5	MICREL	获取价格	Micropower Boost Converter Preliminary Information
MIC2141-BM5	MICROCHIP	获取价格	SWITCHING REGULATOR, 360kHz SWITCHING FREQ-MAX, PDSO5, SOT-23, 5 PIN
MIC2141BM5TR	MICREL	获取价格	Switching Regulator, Current-mode, 360kHz Switching Freq-Max, PDSO5, SOT-23, 5 PIN
MIC2141BM5TR	MICROCHIP	获取价格	Switching Regulator, Current-mode, 360kHz Switching Freq-Max, PDSO5, SOT-23, 5 PIN
MIC2141YM5	MICREL	获取价格	Micropower Boost Converter
MIC2141YM5	MICROCHIP	获取价格	SWITCHING REGULATOR, 360kHz SWITCHING FREQ-MAX, PDSO5
MIC2141YM5TR	MICROCHIP	获取价格	SWITCHING REGULATOR, 360kHz SWITCHING FREQ-MAX, PDSO5, LEAD FREE, SOT-23, 5 PIN
MIC2142	MICREL	获取价格	Micropower Boost Converter
MIC2142_07	MICREL	获取价格	Micropower Boost Converter
MIC2142BM5	MICREL	获取价格	Micropower Boost Converter