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CAT37TDI-TE7

更新时间： 2024-01-24 07:26:32
品牌 Logo 应用领域
安森美 - ONSEMI 驱动光电二极管接口集成电路
页数 文件大小 规格书
11页 130K
描述
IC LED DISPLAY DRIVER, PDSO5, 1 MM HEIGHT, LEAD FREE, SOT-23, 5 PIN, Display Driver

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CAT37TDI-TE7 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：SOT-23
包装说明：VSSOP, TSOP5/6,.11,37针数：5
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.03
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G5
JESD-609代码：e3长度：2.9 mm
湿度敏感等级：1复用显示功能：NO
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
封装主体材料：PLASTIC/EPOXY封装代码：VSSOP
封装等效代码：TSOP5/6,.11,37封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：3 V认证状态：Not Qualified
座面最大高度：1 mm子类别：Display Drivers
最大供电电压：7 V最小供电电压：2.5 V
标称供电电压：3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：MATTE TIN端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：1.625 mm
Base Number Matches：1

CAT37TDI-TE7 数据手册

 浏览型号CAT37TDI-TE7的Datasheet PDF文件第4页浏览型号CAT37TDI-TE7的Datasheet PDF文件第5页浏览型号CAT37TDI-TE7的Datasheet PDF文件第6页浏览型号CAT37TDI-TE7的Datasheet PDF文件第8页浏览型号CAT37TDI-TE7的Datasheet PDF文件第9页浏览型号CAT37TDI-TE7的Datasheet PDF文件第10页 
CAT37  
Application Information  
Capacitor Selection  
Low ESR (equivalent series resistance) capacitors should  
be used at the output to minimize the output ripple voltage.  
The low ESR and small package options available with  
multilayer ceramic capacitors make them excellent choices.  
The X5R and X7R capacitor types are preferred because  
they retain their capacitance over wider voltage and  
temperature ranges than the Y5V or Z5U types. A 1.0 mF  
output capacitor is recommended for most applications.  
The voltage rating of the output capacitor C2 depends on  
the number of LEDs driven in the series. A 16 V ceramic  
capacitor is recommended when driving 3 or 4 LEDs.  
Low profile ceramic capacitors with a 1 mm maximum  
height/thickness are available for designs height  
requirements. Ceramic capacitors also make a good choice  
for the input capacitor, which should be mounted as close as  
possible to the CAT37. A 1 mF or 4.7 mF input capacitor is  
recommended. Table 5 shows a list of several ceramic  
capacitor manufacturers. Consult the manufacturers for  
detailed information as new products and package options  
are introduced regularly.  
Table 6. SCHOTTKY DIODE SUPPLIERS  
Part  
MBR0520  
Supplier  
ON Semiconductor  
www.onsemi.com  
800.282.9855  
MBR0530  
MBR0540  
LED Current Programming  
The LED current is programmed with a single resistor  
connected to the FB pin. The FB pin is internally regulated  
to 95 mV, which sets the current flowing through R1 and the  
LEDs as equal to 0.095/R1. For the best accuracy, a 1% or  
better resistor is recommended. Table 7 shows several  
typical 1% R1 values.  
Table 7. R1 RESISTOR VALUES  
I
(mA)  
R1 (W)  
2.37  
3.16  
4.75  
6.34  
7.87  
9.53  
19.1  
LED  
40  
30  
20  
15  
12  
10  
5
Table 5. CERAMIC CAPACITOR MANUFACTURERS  
Supplier  
Taiyo Yuden  
Web  
www.t−yuden.com  
www.murata.com  
www.kemet.com  
www.avxcorp.com  
Murata  
Kemet  
AVX  
For other LED current values, use the following equation  
to choose R1.  
0.095  
R1 +  
Diode Selection  
ILED  
Schottky diodes, with their low forward voltage drop and  
fast switching speed, are the ideal choice for high efficiency  
applications. Table 6 shows several different Schottky  
diodes that work well with the CAT37. Make sure that the  
diode has a voltage rating greater than the output voltage.  
The diode conducts current only when the power switch is  
turned off (typically less than one−third the time), so a 0.4 A  
or 0.5 A diode will be sufficient for most designs.  
Most white LEDs are driven at maximum currents of  
15 mA to 20 mA. Some higher power designs will use two  
parallel strings of LEDs for greater light output, resulting in  
30 mA to 40 mA (two strings of 15 mA to 20 mA) flowing  
through the R1 resistor.  
http://onsemi.com  
7
 
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