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MIC4043BM4 PDF预览

MIC4043BM4

更新时间: 2024-09-30 19:55:27
品牌 Logo 应用领域
美国微芯 - MICROCHIP 光电二极管
页数 文件大小 规格书
12页 447K
描述
Three Terminal Voltage Reference, 1 Output, 1.245V, PDSO4, SOT-143, 4 PIN

MIC4043BM4 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOT-143包装说明:TSSOP, TO-253
针数:4Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.66模拟集成电路 - 其他类型:THREE TERMINAL VOLTAGE REFERENCE
JESD-30 代码:R-PDSO-G4JESD-609代码:e0
长度:2.86 mm湿度敏感等级:1
功能数量:1输出次数:1
端子数量:4最高工作温度:85 °C
最低工作温度:-40 °C最大输出电压:1.2699 V
最小输出电压:1.2201 V标称输出电压:1.245 V
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TO-253封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):240
认证状态:Not Qualified座面最大高度:1.12 mm
子类别:Voltage References最大供电电压 (Vsup):10 V
最小供电电压 (Vsup):1.8 V表面贴装:YES
最大电压温度系数:888 ppm/ °C温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.9 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30微调/可调输出:NO
最大电压容差:2%宽度:1.3 mm
Base Number Matches:1

MIC4043BM4 数据手册

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MIC4043  
Low-Voltage Secondary-Side Shunt Regulator  
Final Information  
General Description  
Features  
The MIC4043 is a shunt regulator optimized for secondary-  
side regulation in low-voltage power supplies. Featuring an  
output stage guaranteed to swing within 400mV of ground,  
the MIC4043 can be used in power supplies operating down  
to1.8V, evenwithoptoisolatorsrequiringgreaterthan1.2Vof  
headroom.  
Ideal for 1.8V switching converters  
Low-voltage operation  
400mV maximum saturation over  
operating temperature range  
Easy to use  
voltage in, current out  
2% voltage tolerance over operating temperature range  
In power supply applications, the MIC4043 normally drives  
theLEDofanopticallyisolatedfeedbackcircuit.TheMIC4043  
monitors a resistively-divided output voltage and sinks error  
current through the optoisolator’s LED (secondary side); the  
optoisolator’s transistor (primary side) provides this signal to  
thecontroller’sfeedbackinput. TheMIC4043isalsopractical  
for other voltage-monitoring applications requiring an open-  
collector output.  
Applications  
Optically isolated low-volage power supplies  
Low-voltage discrete regulator control  
The MIC4043 replaces conventional ’431-type shunt regula-  
tors to allow low-voltage applications where there is inad-  
equate headroom for a 2.5V regulator in series with an  
optoisolator. Replacing ’431-type devices requires only a  
minor change to the way that the resistive-divider values are  
calculated.  
Typical Application  
OPTICAL  
ISOLATION  
MIC4043  
IN SNK  
GND FB  
MIC4043  
Low-Side Feedback  
VIN  
COMPENSATION  
Control  
VOUT  
1
2
7
6
R1  
R2  
MIC38HC43BN  
Return  
1
2
3
4
8
7
6
5
COMP  
FB  
VREF  
VDD  
4
3
ISNS  
VOUT  
GND  
R2  
R1  
V
= 1.245V  
+1  
OUT  
RT/CT  
200kHz DC-DC Flyback Converter  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com  
November 2000  
1
MIC4043  

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