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參數資料
| 型號： | MIC3000BML |
| 廠商： | MICREL INC |
| 元件分類： | 數字傳輸電路 |
| 英文描述： | SFP Management IC |
| 中文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, QCC24 |
| 封裝： | 4 X 4 MM, MLF-24 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 63K |
| 代理商： | MIC3000BML |
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 |
|---|---|
| MIC3000BML TR | 功能描述:IC TXRX OPTICAL MANAGEMENT 24MLF RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 標準包裝:1,140 系列:AU 類型:收發器 驅動器/接收器數:1/1 規程:CAN 電源電壓:5.3 V ~ 27 V 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SO 包裝:管件 其它名稱:935267940512AU5790D14AU5790D14-ND |
| MIC-3000HRS | 制造商:Pulse 功能描述:Headset Condenser Microphone with 4Pin HIROSE Plug - Beige |
| MIC-3000J | 制造商:Pulse 功能描述:Headset Condenser Microphone with 3.5mm Plug - Beige |
| MIC-3000LJ | 制造商:Pulse 功能描述:Headset Condenser Microphone with Locking 3.5mm Plug - Beige |
| MIC-3000X3 | 制造商:Pulse 功能描述:Headset Condenser Microphone with 3Pin Mini XLR Plug - Beige |
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