参数资料
| 型号： | MIC2141BM5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 10MA SOT23-5 |
| 标准包装： | 3,000 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 4.8 V ~ 22 V |
| 输入电压： | 2.5 V ~ 14 V |
| 频率 - 开关： | 330kHz |
| 电流 - 输出： | 10mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-23-5 |
| 其它名称： | MIC2141BM5TR MIC2141BM5TR-ND |
MIC2141
Micropower Boost Converter
General Description
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.
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
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.
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
Features
? 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
? Typical output current 1mA to 10mA
? SOT23-5 package
Applications
? LCD bias supply
? CCD digital camera supply
operate with an efficiency exceeding 85%.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
10μH
Control Voltage
V C *
(from DAC)
1
2
3
MIC2141
5
4
Variable
V OUT
10μF
4.0
3.5
3.0
2.5
2.0
1.5
1.0
vs. Output Voltage
0.5
0
0
5
10 15
20
25
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
December 2006
1
M9999-122006
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2141YM5 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Micropower Boost Converter |
| MIC2141YM5 TR | 功能描述:直流/直流开关转换器 Micropower Boost Converter, Dynamically Adjustable (Lead Free) RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2141YM5-TR | 功能描述:Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 4.8V 1 Output 10mA SC-74A, SOT-753 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 功能:升压，升压/降压 输出配置:正 拓扑:升压，反激式，SEPIC 输出类型:可调式 输出数:1 电压 - 输入（最小值）:2.5V 电压 - 输入（最大值）:14V 电压 - 输出（最小值/固定）:4.8V 电压 - 输出（最大值）:22V 电流 - 输出:10mA 频率 - 开关:330kHz 同步整流器:无 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商器件封装:SOT-23-5 标准包装:1 |
| MIC2142 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Micropower Boost Converter |
| MIC2142_07 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Micropower Boost Converter |
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