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參數資料
| 型號： | MIC2141 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Micropower Boost Converter Preliminary Information |
| 中文描述： | 微功率升壓轉換器的初步信息 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 154K |
| 代理商： | MIC2141 |
June 2000
1
MIC2141
MIC2141
Micrel
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
MIC2141
Micropower Boost Converter
Preliminary Information
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-lead SOT-23 package for
space and power-sensitive portable applications. The
MIC2141 draws only 70
μ
A of quiescent current and can
operate with an efficiency exceeding 85%.
Features
Implements low-power boost, SEPIC, or flyback
2.5V to 14V input voltage
330kHz switching frequency
<2
μ
A shutdown current
70
μ
A quiescent current
1.24V bandgap reference
typical output current 1mA to 10mA
SOT-23-5 Package
Applications
LCD bias supply
CCD digital camera supply
Ordering Information
Part Number
MIC2141-BM5
Junction Temp. Range
–40
°
C to +85
°
C
Package
SOT-23-5
Typical Application
MIC2141
Variable
V
OUT
V
*
(from DAC)
10
μ
F
10
μ
H
1
5
2
3
4
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
5
10
V
OUT
(V)
15
20
25
V
C
Control Voltage
vs. Output Voltage
DAC-Controlled LCD Bias Voltage Supply
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| MIC2141-BM5 | Micropower Boost Converter Preliminary Information |
| MIC2183BQS | MOSFET N-CH 500V 26A TO-247AD |
| MIC2183BM | CHOKE COIL 220UH 840MA SMD |
| MIC2183 | Low Voltage Synchronous Buck PWM Control IC Final Information |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2141_06 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Micropower Boost Converter |
| MIC2141BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2141-BM5 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Micropower Boost Converter Preliminary Information |
| MIC2141BM5 TR | 功能描述:IC REG BOOST ADJ 10MA SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| MIC2141YM5 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Micropower Boost Converter |
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