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參數資料
| 型號： | MIC2145BMM |
| 廠商： | MICREL INC |
| 元件分類： | 穩壓器 |
| 英文描述： | High Efficiency 2.5W Boost Converter |
| 中文描述： | 2 A SWITCHING REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數： | 1/15頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MIC2145BMM |
May 2003
1
MIC2145
MIC2145
Mcre
MIC2145
High Efficiency 2.5W Boost Converter
Final
General Description
The MIC2145 is a small size boost switching regulator that
can provide over 2.5W of output power. The input voltage
range is between 2.4V 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 MIC2145 can be adjusted up
to 16V.
The MIC2145 is well suited for portable, space-sensitive
applications. Its typical 450kHz operation allows small sur-
face mount external components to be used. The MIC2145
has a low quiescent current of 200
μ
A, and a typical shutdown
current of 0.5
μ
A. The MIC2145 is capable of high efficiencies
in a small board area.
The MIC2145 features a low-on resistance internal switch
that allows it to provide over 2.5W of output power. The peak
switch current can be programmed through an external
resistor. This allows the user to set the peak switch current at
the level where maximum efficiency occurs. It also allows the
user to further optimize for efficiency and inductor size by
setting the peak current below the level of inductor saturation.
The MIC2145 is available in an MSOP-8 and 3mm
×
3mm
MLF-10L package with an ambient operating temperature
range from –40
°
C to +85
°
C.
Typical Application
L1
10 H
D1
MIC2145BMM
RSET
PGND
EN
SW
V
10V/150mA
VDD
FB
SGND
I Limit
V
IN
3.0V to 5.0V
SS
C
IN
10 F/6.3V
C
10 F/16V
1
5
6
7
8
4
3
2
60
65
70
75
80
85
90
10
100
1000
E
OUTPUT CURRENT (mA)
10V Output
Efficiency
V
IN
= 3.0V
Adjustable Output Boost Converter with Programmable Peak Switch Current
Features
2.4V to 16V input voltage
Output adjustable to 16V
Programmable peak current limit
Soft start
Up to 450kHz switching frequency
0.5
μ
A shutdown current
200
μ
A quiescent current
Capable of 5V/ 500mA output with 3.3V input
Achieves over 85% efficiency
Implements low power BOOST, SEPIC, and FLYBACK
topologies
MSOP-8 and 3mm
×
3mm MLF
-10L
Applications
Flash LED driver
LCD bias supply
White LED driver
DSL bias supply
Local 3V to 5V conversion
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Ordering Information
Part Number
MIC2145BMM
MIC2145BML
Voltage
Adj
Adj
Ambient Temp. Range
–
40
°
C to +85
°
C
–
40
°
C to +85
°
C
Package
8-lead MSOP
3
×
3 MLF
-10L
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2145BMM TR | 功能描述:IC REG BST FLYBK SEPIC ADJ 8MSOP 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 |
| MIC2145BMMTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MIC2145YML | 功能描述:直流/直流開關調節器 MSOP-8 Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC2145YML TR | 功能描述:直流/直流開關調節器 MSOP-8 Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC2145YML-TR | 功能描述:Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 2.4V 1 Output 500mA 10-VFDFN Exposed Pad, 10-MLF? 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態:有效 功能:升壓，升壓/降壓 輸出配置:正 拓撲:升壓，反激式，SEPIC 輸出類型:可調式 輸出數:1 電壓 - 輸入（最小值）:2.4V 電壓 - 輸入（最大值）:16V 電壓 - 輸出（最小值/固定）:2.4V 電壓 - 輸出（最大值）:16V 電流 - 輸出:500mA 頻率 - 開關:450kHz 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:10-VFDFN 裸露焊盤，10-MLF? 供應商器件封裝:10-MLF?（3x3） 標準包裝:1 |
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