LM25145: Questions for LM25145 Current Limit Comparator Block Diagram Issue

Jacky Wang(QD)

Part Number: LM25145

Hi Experts,

We are checking on LM25145 ILIM function referring to datasheet page 24 figure 40 and page 16 block diagrams, but we are confused about the ILIM comparator polarity, can you help to double check which one is correct?

datasheet page 24 figure 40:

page 16 block diagram:

Also, regarding to the ILIM behavior, can you help to explain if it is above or below the threshold to trigger the current limit function?

Thanks.

over 5 years ago

0 Iven Su over 5 years ago

TI__Expert 8245 points

Hi,

Figure 40 should be right, so VILIM should be above the threshold to trigger valley current limit. Figure 41 might help. Thanks.

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LM25145: Questions for LM25145 Current Limit Comparator Block Diagram Issue