参数资料
型号: MIC2194YM TR
厂商: Micrel Inc
文件页数: 1/10页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 8-SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 440kHz
占空比: 100%
电源电压: 2.9 V ~ 14 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
其它名称: MIC2194YMTR
MIC2194YMTR-ND
MIC2194
General Description
MIC2194
400kHz SO-8 Buck Control IC
Features
Micrel
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-
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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
ceramic capacitor solutions.
Applications
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
0.012 ?
12V
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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
OUTP
47 μ F
20V
( × 2)
MIC2194BM
VIN CS
EN/
UVLO
Si4431A
( × 2)
5.2 μ H
V OUT
5V, 5A
1 μ F
2.2nF
2k
VDD FB
COMP GND
B530 10k
3.32k
220 μ F
10V
( × 2)
Adjustable Output Buck Converter
V IN
+3.3V
0.040 ?
Si9803
22 μ H
10 μ F
16V
MIC2194BM
VIN CS
B530
22nF
OUTP
10 μ F
16V
1 μ F
EN/
UVLO
VDD FB
4.99k COMP GND
3.01k
1k
220 μ F
10V
( × 2)
10nF
V OUT
– 5V, 0.6A
Positive-to-Negative Buck-Boost Converter
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 2005
1
MIC2194
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MIC2196 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:400kHz SO-8 Boost Control IC
MIC2196_08 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:400kHz SO-8 Boost Control IC
MIC2196BM 功能描述:IC REG CTRLR BST FLYBK PWM 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
MIC2196BM TR 功能描述:IC REG CTRLR BST FLYBK PWM 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
MIC2196YM 功能描述:DC/DC 开关控制器 SO-8 3V Boost Controller (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK