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CLM2815AAU-1.5 PDF预览

CLM2815AAU-1.5

更新时间： 2024-02-16 21:55:29
品牌 Logo 应用领域
CALOGIC 局域网输出元件调节器
页数 文件大小 规格书
6页 84K
描述
Fixed Positive LDO Regulator, 1.5V, 1.2V Dropout, PSFM3, PLASTIC, TO-220, 3 PIN

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CLM2815AAU-1.5 技术参数

生命周期：Obsolete零件包装代码：SFM
包装说明：PLASTIC, TO-220, 3 PIN针数：3
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.90.00.00风险等级：5.84
最大回动电压 1：1.2 V最大输入电压：7 V
最小输入电压：2.75 VJESD-30 代码：R-PSFM-T3
功能数量：1端子数量：3
工作温度TJ-Max：125 °C工作温度TJ-Min：-45 °C
最大输出电流 1：1.5 A最大输出电压 1：1.53 V
最小输出电压 1：1.47 V标称输出电压 1：1.5 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-220
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
认证状态：Not Qualified调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
表面贴装：NO端子形式：THROUGH-HOLE
端子位置：SINGLEBase Number Matches：1

CLM2815AAU-1.5 数据手册

 浏览型号CLM2815AAU-1.5的Datasheet PDF文件第1页浏览型号CLM2815AAU-1.5的Datasheet PDF文件第2页浏览型号CLM2815AAU-1.5的Datasheet PDF文件第4页浏览型号CLM2815AAU-1.5的Datasheet PDF文件第5页浏览型号CLM2815AAU-1.5的Datasheet PDF文件第6页 
CLM2815  
CORPORATION  
APPLICATION HINTS  
The Calogic Semiconductor CLM2815 incorporates protection  
against over-current faults, reversed load insertion, over  
temperature operation, and positive and negative transient  
voltage. However, the use of an output capacitor is required  
in order to insure the stability and the performances.  
Reducing parasitic resistance and inductance  
One solution to minimize parasitic resistance and inductance  
is to connect in parallel capacitors. This arrangement will  
improve the transient response of the power supply if your  
system requires rapidly changing current load condition.  
Stability  
Thermal Consideration  
The output capacitor is part of the regulator’s frequency  
compensation system. Either a 220µF aluminum electrolytic  
capacitor or a 47µF solid tantalum capacitor between the  
output terminal and ground guarantees stable operation for all  
operating conditions.  
Although the CLM2815 offers some limiting circuitry for  
overload conditions, it is necessary not to exceed the  
maximum junction temperature, and therefore to be careful  
about thermal resistance. The heat flow will follow the lowest  
resistance path, which is the Junction-to-case thermal  
resistance. In order to insure the best thermal flow of the  
component, a proper mounting is required. Note that the case  
of the device is electrically connected to the output. In case  
the case has to be electrically isolated, a thermally conductive  
spacer can be used. However do not forget to consider its  
contribution to thermal resistance.  
However, in order to minimize overshoot and undershoot, and  
therefore optimize the design, please refer to the section  
’Ripple Rejection’.  
Ripple Rejection  
Ripple rejection can be improved by adding a capacitor  
between the ADJ pin and ground. When ADJ pin bypassing is  
used, the value of the output capacitor required increases to  
its maximum (220µF for an aluminum electrolytic capacitor, or  
47µF for a solid tantalum capacitor). If the ADJ pin is not  
bypass, the value of the output capacitor can be lowered to  
100µF for an electrolytic aluminum capacitor or 15µF for a  
solid tantalum capacitor.  
Assuming:  
V
IN = 10V, VOUT = 5V, IOUT = 1.5A, TA = 90oC, ΘCASE = 1oC/W  
(no external heat sink, no wind)  
Power dissipation under these conditions  
•
PD = (VIN - VOUT) IOUT = 7.5W  
However the value of the ADJ-bypass capacitor should be  
chosen with respect to the following equation:  
Junction Temperature  
TJ = TA + PD (ΘCASE + ΘJC  
•
)
•
•
C = 1 / ( 6.28 FR R1 )  
Where C = value of the capacitor in Farads (select an equal or  
larger standard value),  
For the Control Section  
TJ = 90 C + 7.5W (1 C/W + 0.6 C/W) = 102 C  
114oC TJUNCTION MAX for the control section.  
o
o
o
o
•
FR = ripple frequency in Hz,  
R1 = value of resistor R1 in Ohms.  
For theoPower Section  
o
o
o
•
TJ = 90 C + 7.5W (1 C/W + 1.6 C/W) = 104.5 C  
109.5oC TJUNCTION MAX for the power transistor.  
If an ADJ-bypass capacitor is used, the amplitude of the  
output ripple will be independent of the output voltage. If an  
ADJ-bypass capacitor is not used, the output ripple will be  
proportional to the ratio of the output voltage to the reference  
voltage:  
In both cases reliable operation is insured by adequate  
junction temperature.  
M = VOUT / VREF  
Where M = multiplier for the ripple seen when the ADJ pin is  
optimally bypassed.  
VREF = Reference Voltage  
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025  
123456

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