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MIC4575BUT&R

更新时间： 2024-12-01 14:36:43
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
Switching Regulator, Voltage-mode, 3.2A, 220kHz Switching Freq-Max, BICMOS, PSSO5, TO-263, 5 PIN

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MIC4575BUT&R 技术参数

是否Rohs认证：不符合生命周期：Obsolete
零件包装代码：D2PAK包装说明：TO-263, SMSIP5H,.6,67TB
针数：4Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.7Is Samacsys：N
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
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
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：e0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
标称输出电压：1.23 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-263封装等效代码：SMSIP5H,.6,67TB
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified座面最大高度：4.902 mm
子类别：Switching Regulator or Controllers最大供电电流 (Isup)：10 mA
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：Tin/Lead (Sn85Pb15)
端子形式：GULL WING端子节距：1.702 mm
端子位置：SINGLE宽度：8.7757 mm
Base Number Matches：1

MIC4575BUT&R 数据手册

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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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