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參數(shù)資料
| 型號(hào)： | MIC2142 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Micropower Boost Converter |
| 中文描述： | 微功率升壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大小： | 137K |
| 代理商： | MIC2142 |
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December 2000
1
MIC2142
MIC2142
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
MIC2142
Micropower Boost Converter
Preliminary Information
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 applications. 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 85
μ
A, and
a typical shutdown current of 0.1
μ
A. It’s 330kHz operation
allows small surface mount external components to be used.
The MIC2142 is capable of efficiences over 85% in a small
board area.
The MIC2142 can be configured 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.
The MIC2142 is available in a SOT23-5 package with an
ambient operating temperature range from –40
°
C to +85
°
C
Features
2.2V to 16V input voltage
Up to 22V output voltage
330kHz switching frequency
0.1
μ
A shutdown current
85
μ
A quiescent current
Implements low-power boost, SEPIC, or flyback
SOT23-5 package
Applications
LCD bias supply
White LED driver
12V Flash memory supply
Local 3V to 5V conversion
Typical Application
R2
365k
R1
124k
+5V @60mA
2.8V to 4.7V
V
IN
L1
33
μ
H
D1
MIC2142
1
VCC SW
5
3
4
2
FB
GND
EN
C
IN
10
μ
F
C
OUT
22
F
Typical Configuration
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0
10
OUTPUT CURRENT (mA)
20
30
40
50
60
70
E
Efficiency
vs. Output Current
V
IN
= 4.2V
V
IN
= 3.0V
Efficiency vs. Output Current
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2142_07 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Micropower Boost Converter |
| MIC2142-5.0BM5 TR | 功能描述:IC REG BOOST FLYBK SEPIC SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)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(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 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 |
| MIC2142BD5 TR | 功能描述:IC REG BOOST FLYBK SEPIC SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)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(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 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 |
| MIC2142BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2142BM5 EV | 制造商:Micrel Inc 功能描述: |
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