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參數資料
| 型號： | MIC2194BM |
| 廠商： | MICREL INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 400kHz SO-8 Buck Control IC |
| 中文描述： | SWITCHING CONTROLLER, 440 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 63K |
| 代理商： | MIC2194BM |
October 2002
1
MIC2194
MIC2194
Micrel
MIC2194
400kHz SO-8 Buck Control IC
Final Information
General Description
Micrel’s MIC2194 is a high efficiency PWM buck control IC
housed in the SO-8 package. Its 2.9V to 14V input voltage
range allows it to efficiently step down voltages in 3.3V, 5V,
and 12V systems as well as 1- or 2-cell Li Ion battery powered
applications. The flexible architecture of the MIC2194 allows
for it to be configured as a buck or a buck-boost converter.
The MIC2194 solution saves valuable board space. The
device is housed in the space-saving SO-8 package, whose
low pin-count minimizes external components. Its 400kHz
PWM operation allows a small inductor and small output
capacitors to be used. The MIC2194 can implement all-
ceramic capacitor solutions.
The MIC2194 drives a high-side P-channel MOSFET. A low
output driver impedance of 2
allows the MIC2194 to drive
large external MOSFETs to generate a wide range of output
currents. The MIC2194 can achieve maximum duty cycles of
100%, which can be useful in low headroom applications.
The MIC2194 is available in an 8 pin SOIC package with a
junction temperature range of –40
°
C to +125
°
C.
Typical Application
V
IN
12V
47
μ
F
20V
(
×
2)
Si4431A
(
×
2)
B530 10k
3.32k
220
μ
F
10V
(
×
2)
5.2
μ
H
2k
0.012
2.2nF
MIC2194BM
VIN
EN/
UVLO
VDD
CS
OUTP
COMP
FB
GND
V
5V, 5A
1
μ
F
Adjustable Output Buck Converter
V
+3.3V
10
μ
F
16V
Si9803
B530
3.01k
1k
220
μ
F
10V
(
×
2)
22
μ
H
4.99k
0.040
10nF
MIC2194BM
VIN
EN/
UVLO
VDD
CS
OUTP
COMP
FB
GND
V
–
5V, 0.6A
1
μ
F
10
μ
F
16V
22nF
Positive-to-Negative Buck-Boost Converter
Features
2.9V to 14V input voltage range
400kHz oscillator frequency
PWM current mode control
2
output drivers
100% maximum duty cycle
0.5
μ
A micro-power shutdown
Programmable UVLO
Front edge blanking
Cycle-by-cycle current limiting
Frequency foldback short circuit protection
8-lead SOIC package
Applications
Point of load power supplies
Negative voltage buck-boost power supplies
Distributed power systems
Base stations
Wireless modems
ADSL line cards
Servers
Step down conversion in 3.3V, 5V, 12V systems
1-and 2-cell Li Ion battery operated equipment
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2194BM TR | 功能描述:IC REG CTRLR BST PWM CM 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| MIC2194YM | 功能描述:DC/DC 開關控制器 SO-8 3V Buck Contoller (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MIC2194YM TR | 功能描述:DC/DC 開關控制器 SO-8 3V Buck Contoller (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MIC2196 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:400kHz SO-8 Boost Control IC |
| MIC2196_08 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:400kHz SO-8 Boost Control IC |
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