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EPC700-CSP6 PDF预览

EPC700-CSP6

更新时间: 2024-02-29 14:05:40
品牌 Logo 应用领域
EPC 驱动器
页数 文件大小 规格书
11页 264K
描述
24V/50mA General-Purpose Output-Driver

EPC700-CSP6 数据手册

 浏览型号EPC700-CSP6的Datasheet PDF文件第2页浏览型号EPC700-CSP6的Datasheet PDF文件第3页浏览型号EPC700-CSP6的Datasheet PDF文件第4页浏览型号EPC700-CSP6的Datasheet PDF文件第6页浏览型号EPC700-CSP6的Datasheet PDF文件第7页浏览型号EPC700-CSP6的Datasheet PDF文件第8页 
epc700/epc702  
Current Peak at OUT  
A short current peak when OUT is turned on, typically generated by a capacitive load, could trigger the short-circuit protection logic. However,  
if the current peak is shorter than text plus tdel, the over-current peak will be ignored.  
Make sure that the energy drawn by such a current peak does not destroy the internal/external output transistor.  
IN  
OUT  
HIGH-Z  
STATUS  
Vth sens  
SENS  
<t  
text  
del  
Figure 3: Short over-current pulse, i.e., by switching a capacitive load  
Over-current Reset Sequence  
If there is a permanent short circuit at OUT, such short circuit will be detected and OUT is turned off. After a waiting time tminOFF, the device tries  
to turn on OUT again. If the short circuit is still present, OUT is immediately turned off again. This sequence continues until the short circuit is  
removed or IN goes to LOW or power is turned off. This mode is called self-healing since the device tries to self-heal the short circuit end to  
switch back into normal operation.  
As a consequence in the case of a permanent over-current , short current peaks are issued into the load, respectively short.  
The time tminOFF has to be set to a value that the internal/external switch cannot be damaged by a too high power dissipation. Without an exter-  
nal switch, the time tminOFF has to be 1,000 times longer than the time tdel  
.
0
IN  
0
OUT  
0
SHORT  
V
th sens  
0
SENS  
tdel  
text  
t
minOFF  
STATUS  
epc700  
HIGH-Z  
HIGH-Z  
STATUS  
epc702  
t
LED  
Figure 4: Over-current reset sequence  
If one wants to reduce the waiting time in case of a short circuit situation, it can be done by simply taking IN to a low state and then to high  
again. Please refer to the timing diagram in Figure 5. However, make sure that the maximum power dissipation of the chip or the external  
switching transistor will never be exceeded above the allowed maximum.  
IN  
OUT  
SHORT  
Vth sens  
SENS  
tdel  
text  
<t  
minOFF  
HIGH-Z  
STATUS  
Figure 5: Over-current status reset  
© 2011 ESPROS Photonics Corporation  
Characteristics subject to change without notice  
5
Datasheet epc700_702 - V2.2  
www.espros.ch  
 

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