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MIC4680BM

更新时间： 2024-11-09 19:48:59
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
15页 889K
描述
Switching Regulator, Voltage-mode, 1.3A, 220kHz Switching Freq-Max, PDSO8, PLASTIC, SOIC-8

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MIC4680BM 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP8,.25
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.12模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE最大输入电压：34 V
最小输入电压：4 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G8JESD-609代码：e0
长度：4.93 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：1.3 A封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：240认证状态：Not Qualified
座面最大高度：1.73 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
最大切换频率：220 kHz温度等级：AUTOMOTIVE
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.94 mm
Base Number Matches：1

MIC4680BM 数据手册

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MIC4680  
1A 200kHz SuperSwitcher™  
Buck Regulator  
General Description  
Features  
The MIC4680 SuperSwitcher™ is an easy-to-use fixed or  
adjustable output voltage step-down (buck) switch-mode  
voltage regulator. The 200kHz MIC4680 achieves up to  
1.3A of continuous output current over a wide input range  
in a 8-pin SOIC.  
• SOIC-8 package with up to 1.3A output current  
• All surface mount solution  
• Only 4 external components required  
• Fixed 200kHz operation  
• 3.3V, 5V, and adjustable output versions  
• Internally compensated with fast transient response  
• Wide 4V to 34V operating input voltage range  
• Less than 2µA typical shutdown-mode current  
• Up to 90% efficiency  
The MIC4680 is available in 3.3V and 5V fixed output  
versions or adjustable output down to 1.25V.  
The MIC4680 has an input voltage range of 4V to 34V,  
with excellent line, load, and transient response. The  
regulator performs cycle-by-cycle current limiting and  
thermal shutdown for protection under fault conditions. In  
shutdown mode, the regulator draws less than 2µA of  
standby current.  
• Thermal shutdown  
• Overcurrent protection  
The MIC4680 SuperSwitcher™ regulator requires a mini-  
mum number of external components and can operate  
using a standard series of inductors and capacitors.  
Frequency compensation is provided internally for fast  
transient response and ease of use.  
Applications  
• Simple 1A high-efficiency step-down (buck) regulator  
• Replacement of TO-220 and TO-263 designs  
• Efficient pre-regulator (5V to 2.5V, 12V to 3.3V, etc.)  
• On-card switching regulators  
• Positive-to-negative converter (inverting buck-boost)  
• Simple battery charger  
The MIC4680 is available in the 8-pin SOIC with a  
–40°C to +125°C junction temperature range.  
• Negative boost converter  
• Higher output current regulator using external FET  
Typical Application  
MIC4680-3.3BM  
MIC4680BM  
L1  
L1  
+6V to +34V  
3.3V/1A  
+5V to +34V  
2.5V/1A  
2
1
3
4
2
1
3
4
IN  
SW  
IN  
SW  
C1  
C1  
68µH  
68µH  
R1  
15µF  
35V  
C2  
220µF  
16V  
15µF  
35V  
C2  
220µF  
16V  
3.01k  
SHUTDOWN  
ENABLE  
SHUTDOWN  
ENABLE  
SHDN  
FB  
SHDN  
FB  
D1  
D1  
R2  
2.94k  
GND  
5–8  
B260A or  
SS26  
GND  
5–8  
B260A or  
SS26  
Power  
SOIC-8  
Power  
SOIC-8  
Fixed Regulator Circuit  
Adjustable Regulator Circuit  
SuperSwitcher is a trademark of Micrel, Inc.  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-032808  
March 2008  
1234567...15

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