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參數資料
| 型號： | MIC2142BM5 |
| 廠商： | MICREL INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Micropower Boost Converter |
| 中文描述： | SWITCHING REGULATOR, 365 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數： | 1/17頁 |
| 文件大小： | 137K |
| 代理商： | MIC2142BM5 |
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2142BM5 EV | 制造商:Micrel Inc 功能描述: |
| MIC2142BM5 TR | 功能描述:IC REG BOOST FLYBK SEPIC 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 |
| MIC2142BM5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| 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/直流開關轉換器 Micropower SOT23-5 Boost Converter (Lead Free) RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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