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MIC4680-5.0YM PDF预览

MIC4680-5.0YM

更新时间： 2024-11-09 19:48:59
品牌 Logo 应用领域
美国微芯 - MICROCHIP /
页数 文件大小 规格书
15页 889K
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MIC4680-5.0YM 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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MIC4680-5.0YM 替代型号

型号 品牌 替代类型 描述 数据表
MIC4680-5.0YM-TR MICROCHIP

完全替代

 1.3A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PDSO8
MIC4680-5.0BM MICROCHIP

完全替代

 Switching Regulator, Voltage-mode, 1.3A, 220kHz Switching Freq-Max, PDSO8, PLASTIC, SOIC-8
MIC4680-5.0BM MICREL

功能相似

 1A 200kHz SuperSwitcher⑩ Buck Regulator Final

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 		1A 200kHz SuperSwitcher⑩ Buck Regulator Final
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 		Switching Regulator, Voltage-mode, 1.3A, 220kHz Switching Freq-Max, PDSO8, PLASTIC, SOIC-8
MIC4680YM MICREL

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 		1A 200kHz SuperSwitcher Buck Regulator
MIC4680YMTR MICROCHIP

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