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MIC4575WUTR

更新时间： 2024-12-01 04:54:15
品牌 Logo 应用领域
美国微芯 - MICROCHIP 信息通信管理开关
页数 文件大小 规格书
15页 525K
描述
3.2A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PSSO5, ROHS COMPLIANT, TO-263, 5 PIN

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MIC4575WUTR 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：D2PAK
包装说明：TO-263,针数：4
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 1.23 TO 20 V模拟集成电路 - 其他类型：SWITCHING REGULATOR
最大输入电压：24 V最小输入电压：4 V
标称输入电压：12 VJESD-30 代码：R-PSSO-G5
JESD-609代码：e3长度：10.363 mm
湿度敏感等级：3功能数量：1
端子数量：5最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：3.2 A
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
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：4.902 mm表面贴装：YES
切换器配置：BUCK最大切换频率：220 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.702 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.7757 mm
Base Number Matches：1

MIC4575WUTR 数据手册

 浏览型号MIC4575WUTR的Datasheet PDF文件第2页浏览型号MIC4575WUTR的Datasheet PDF文件第3页浏览型号MIC4575WUTR的Datasheet PDF文件第4页浏览型号MIC4575WUTR的Datasheet PDF文件第5页浏览型号MIC4575WUTR的Datasheet PDF文件第6页浏览型号MIC4575WUTR的Datasheet PDF文件第7页 
MIC4575  
200kHz Simple 1A Buck Regulator  
General Description  
Features  
The MIC4575 is a series of easy to use fixed and  
adjustable BiCMOS step-down (buck) switch-mode voltage  
regulators. The 200kHz MIC4575 duplicates the pinout  
and function of the 52kHz LM2575. The higher switching  
frequency may allow up to a 2:1 reduction in output filter  
inductor size.  
• Fixed 200kHz operation  
• 3.3V, 5V, and adjustable output versions  
• Voltage over specified line and load conditions:  
• Fixed version: ±3% max. output voltage  
• Adjustable version: ±2% max. feedback voltage  
• Guaranteed 1A switch current  
• Wide 4V to 24V input voltage range  
• Wide 1.23V to 20V output voltage range  
• Requires minimum external components  
• < 200µA typical shutdown mode  
• 75% efficiency (adjustable version > 75% typical)  
• Standard inductors and capacitors are25% of typical  
LM2575 values  
• Thermal shutdown  
The MIC4575 is available in 3.3V, and 5V fixed output  
versions or a 1.23V to 20V adjustable output version. Both  
versions are capable of driving a 1A load with excellent  
line and load regulation.  
The feedback voltage is guaranteed to ±2% tolerance for  
adjustable versions, and the output voltage is guaranteed  
to ±3% for fixed versions, within specified voltages and  
load conditions. The oscillator frequency is guaranteed to  
±10%.  
In shutdown mode, the regulator draws less than 200µA  
standby current. The regulator performs cycle-by-cycle  
current limiting and thermal shutdown for protection under  
fault conditions.  
• Overcurrent protection  
• 100% electrical thermal limit burn-in  
Applications  
This series of simple switch-mode regulators requires a  
minimum number of external components and can operate  
using a standard series of inductors. Frequency comp-  
ensation is provided internally.  
• Simple high-efficiency step-down (buck) regulator  
• Efficient pre-regulator for linear regulators  
• On-card switching regulators  
• Positive-to-negative converter (inverting buck-boost)  
• Battery charger  
The MIC4575 is available in TO-220 (T) and TO-263 (U)  
packages for the industrial temperature range.  
Data sheets and support documentation can be found on  
Micrel’s web site at www.micrel.com.  
• Negative boost converter  
• Step-down 6V to 3.3V for Intel Pentium® and similar  
microprocessors  
___________________________________________________________________________________________________________  
Typical Application  
L1  
5.0V/1A  
Shutdown  
Enable  
5
2
4
SHDN  
MIC4575-5.0_T  
VIN FB  
SW  
68µH  
8V to 24V  
1
C2  
330µF  
16V  
C1  
150µF  
35V  
GND  
D1  
1N5819  
3
Fixed Regulator  
Adjustable Regulator  
Pentium is a registered trademark of Intel Corporation  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-072909  
July 2009  
1
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