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MIC3172BN

更新时间： 2024-09-17 20:35:27
品牌 Logo 应用领域
美国微芯 - MICROCHIP 开关光电二极管
页数 文件大小 规格书
20页 909K
描述
Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, BIPolar, PDIP8, PLASTIC, DIP-8

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中文翻译

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MIC3172BN 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIP包装说明：DIP, DIP8,.3
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.21模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：40 V最小输入电压：3 V
标称输入电压：5 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e0长度：9.525 mm
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：3.5 A标称输出电压：1.24 V
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装等效代码：DIP8,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：240
认证状态：Not Qualified子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：9 mA表面贴装：NO
切换器配置：SINGLE最大切换频率：115 kHz
技术：BIPOLAR温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：7.62 mm
Base Number Matches：1

MIC3172BN 数据手册

 浏览型号MIC3172BN的Datasheet PDF文件第2页浏览型号MIC3172BN的Datasheet PDF文件第3页浏览型号MIC3172BN的Datasheet PDF文件第4页浏览型号MIC3172BN的Datasheet PDF文件第5页浏览型号MIC3172BN的Datasheet PDF文件第6页浏览型号MIC3172BN的Datasheet PDF文件第7页 
MIC2172/3172  
100kHz 1.25A Switching Regulators  
General Description  
Features  
The MIC2172 and MIC3172 are complete 100kHz SMPS  
current-mode controllers with internal 65V 1.25A power  
switches. The MIC2172 features external frequency  
synchronization or frequency adjustment, while the  
MIC3172 features an enable/shutdown control input.  
• 1.25A, 65V internal switch rating  
• 3V to 40V input voltage range  
• Current-mode operation  
• Internal cycle-by-cycle current limit  
• Thermal shutdown  
• Low external parts count  
• Operates in most switching topologies  
• 7mA quiescent current (operating)  
• <1µA quiescent current, shutdown mode (MIC3172)  
• TTL shutdown compatibility (MIC3172)  
• External frequency synchronization (MIC2172)  
• External frequency trim (MIC2172)  
• Fits most LT1172 sockets (see applications info)  
Although primarily intended for voltage step-up  
applications, the floating switch architecture of the  
MIC2172/3172 makes it practical for step-down, inverting,  
and Cuk configurations as well as isolated topologies.  
Operating from 3V to 40V, the MIC2172/3172 draws only  
7mA of quiescent current making it attractive for battery  
operated supplies.  
The MIC3172 is for applications that require on/off control  
of the regulator. The MIC3172 is externally shutdown by  
applying a TTL low signal to EN (enable). When disabled,  
the MIC3172 draws only leakage current (typically less  
than 1µA). EN must be high for normal operation. For  
applications not requiring control, EN must be tied to VIN or  
TTL high.  
Applications  
• Laptop/palmtop computers  
• Toys  
The MIC2172 is for applications requiring two or more  
SMPS regulators that operate from the same input supply.  
The MIC2172 features a SYNC input which allows locking  
of its internal oscillator to an external reference. This  
makes it possible to avoid the audible beat frequencies  
that result from the unequal oscillator frequencies of  
independent SMPS regulators.  
• Hand-held instruments  
• Off-line converter up to 50W (requires external power  
switch)  
• Predriver for higher power capability  
• Master/slave configurations (MIC2172)  
A reference signal can be supplied by one MIC2172  
designated as a master. To insure locking of the slave’s  
oscillators, the reference oscillator frequency must be  
higher than the slave’s. The master MIC2172’s oscillator  
frequency is increased up to 135kHz by connecting a  
resistor from SYNC to ground (see applications  
information).  
The MIC2172/3172 is available in an 8-pin plastic DIP or  
SOIC for –40°C to +85°C operation.  
___________________________________________________________________________________________________________  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-041806  
(408) 955-1690  
April 2006  
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中文翻译

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MIC3172BN 替代型号

型号 品牌 替代类型 描述 数据表
MIC3172YN MICROCHIP

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 3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDIP8
MIC2172YN MICROCHIP

类似代替

 3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDIP8

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