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參數(shù)資料
| 型號： | MIC2141-BM5 |
| 廠商： | MICREL INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower Boost Converter Preliminary Information |
| 中文描述： | SWITCHING REGULATOR, 360 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 154K |
| 代理商： | MIC2141-BM5 |
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2141BM5 TR | 功能描述:IC REG BOOST ADJ 10MA SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):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(yīng)商設(shè)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 |
| MIC2141YM5 TR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Micropower Boost Converter, Dynamically Adjustable (Lead Free) RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)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:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 功能:升壓，升壓/降壓 輸出配置:正 拓?fù)?升壓，反激式，SEPIC 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:2.5V 電壓 - 輸入（最大值）:14V 電壓 - 輸出（最小值/固定）:4.8V 電壓 - 輸出（最大值）:22V 電流 - 輸出:10mA 頻率 - 開關(guān):330kHz 同步整流器:無 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商器件封裝:SOT-23-5 標(biāo)準(zhǔn)包裝:1 |
| MIC2142 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Micropower Boost Converter |
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