参数资料
| 型号： | MIC2142BM5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST FLYBK SEPIC SOT23-5 |
| 标准包装： | 3,000 |
| 类型： | 升压（升压），回扫，Sepic |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 3 V ~ 22 V |
| 输入电压： | 2.2 V ~ 16 V |
| 频率 - 开关： | 330kHz |
| 电流 - 输出： | 200mA |
| 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： | MIC2142BM5TR |
MIC2142
Micropower Boost Converter
General Description
The MIC2142 is a micropower boost switching regulator
housed in a SOT23-5 package. The input voltage range is
between 2.2V to 16V, making the device suitable for one-
cell Li Ion and 3 to 4-cell alkaline/NiCad/NiMH applica-
tions. The output voltage of the MIC2142 can be adjusted
up to 22V.
The MIC2142 is well suited for portable, space-sensitive
applications. It features a low quiescent current of 85μA,
and a typical shutdown current of 0.1μA. It’s 330kHz
operation allows small surface mount external components
to be used. The MIC2142 is capable of efficiencies over
85% in a small board area.
The MIC2142 can be con ? gured to efficiently power a
variety of loads. It is capable of providing a few mA output
for supplying low power bias voltages; it is also capable of
providing the 80mA needed to drive 4 white LEDs.
Features
? 2.2V to 16V input voltage
? Up to 22V output voltage
? 330kHz switching frequency
? 0.1μA shutdown current
? 85μA quiescent current
? Implements low-power boost, SEPIC, or ? yback
? SOT23-5 package
Applications
? LCD bias supply
? White LED driver
? 12V Flash memory supply
? Local 3V to 5V conversion
The MIC2142 is available in a SOT23-5 package with an
ambient operating temperature range from –40°C to
+85°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
2.8V to 4.7V
V IN
L1
33μH
D1
+5V @60mA
0.90
Efficiency
vs. Output Current
0.85
C IN
10μF
1
5
MIC2142
VCC SW
FB
EN GND
3
4
2
R2
365k
R1
124k
C OUT
22μF
0.80
0.75
0.70
0.65
0.60
0.55
0.50
V IN = 4.2V
V IN = 3.0V
0.45
0
0.40
10 20 30 40 50 60 70
OUTPUT CURRENT (mA)
Typical Configuration
Efficiency vs. Output Current
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
October 2007
M9999-102507
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2142YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Micrel Inc 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2142YM5 TR | 功能描述:直流/直流开关转换器 Micropower SOT23-5 Boost Converter (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 |
| MIC2142YM5TR | 制造商:Micrel 功能描述:Converter DC-DC Single Boost 2.2 to 16V |
| MIC2142YM5-TR | 功能描述:Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 2.2V 1 Output 200mA SC-74A, SOT-753 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:过期 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）:2.2V 电压 - 输入（最大值）:16V 电压 - 输出（最小值/固定）:2.2V 电压 - 输出（最大值）:22V 电流 - 输出:200mA 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 |
| MIC2145 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:High Efficiency 2.5W Boost Converter |
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