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MIC4684YMTR

更新时间： 2024-11-19 21:14:39
品牌 Logo 应用领域
麦瑞 - MICREL 开关光电二极管
页数 文件大小 规格书
16页 482K
描述
SWITCHING REGULATOR, 225kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOP-8

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中文翻译

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MIC4684YMTR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Transferred零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.19
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：30 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：e4
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：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.73 mm表面贴装：YES
切换器配置：BUCK最大切换频率：225 kHz
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
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：40
宽度：3.93 mmBase Number Matches：1

MIC4684YMTR 数据手册

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MIC4684  
2A High-Efficiency SuperSwitcher™ Buck Regulator  
General Description  
Features  
The MIC4684 is a high-efficiency 200kHz stepdown (buck)  
switching regulator. Power conversion efficiency of above  
85% is easily obtainable for a wide variety of applications.  
The MIC4684 achieves 2Aof continuous current in an 8-lead  
SO (small outline) package at 60°C ambient temperature.  
• SO-8 package with 2A continuous output current  
• Over 85% efficiency  
• Fixed 200kHz PWM operation  
• Wide 4V to 30V input voltage range  
• Output voltage adjustable to 1.235V  
• All surface mount solution  
• Internally compensated with fast transient response  
• Over-current protection  
• Frequency foldback short-circuit protection  
• Thermal shutdown  
Highefficiencyismaintainedoverawideoutputcurrentrange  
byutilizingaboostcapacitortoincreasethevoltageavailable  
to saturate the internal power switch. As a result of this high  
efficiency, no external heat sink is required. The MIC4684,  
housed in an SO-8, can replace larger TO-220 and TO-263  
packages in many applications.  
Applications  
The MIC4684 allows for a high degree of safety. It has a wide  
input voltage range of 4V to 30V (34V transient), allowing  
it to be used in applications where input voltage transients  
may be present. Built-in safety features include over-current  
protection, frequency-foldback short-circuit protection, and  
thermal shutdown.  
• Simple high-efficiency step-down regulator  
• 5V to 3.3V/1.7A converter (60°C ambient)  
• 12V to 1.8V/2A converter (60°C ambient)  
• On-card switching regulator  
• Dual-output ±5V converter  
• Battery charger  
The MIC4684 is available in an 8-lead SO package with a  
junction temperature range of –40°C to +125°C.  
Ordering Information  
Part Number  
Voltage Junction Temp. Range Package  
Standard Pb-Free  
MIC4684BM MIC4684YM  
Adj  
-40°C to +125°C  
SOP-8  
Typical Application  
VIN  
Efficiency  
MIC4684BM  
CBS  
6.5V to 25V  
vs. Output Current  
3
4
1
5
0.33µF/50V  
VIN  
BS  
SW  
FB  
VOUT  
2.5V/1.5A  
100  
VOUT = 3.3V  
8
EN  
68µH  
R1  
80  
60  
40  
20  
0
CIN  
33µF  
35V  
3.01k  
330µF  
6.3V  
R2  
3.01k  
GND  
2, 6, 7  
VOUT = 1.8V  
VOUT = 2.5V  
3A  
40V  
Adjustable Buck Converter  
VIN = 5.0V  
0
0.5  
1
1.5  
2
OUTPUT CURRENT (A)  
Efficiency vs. Output Current  
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  
January 2010  
1
M9999-012610  
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