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Part Number: SN6505B
in SN6505B datasheet, the Absolute Maximum Ratings Peak output switch current @ 25 degree C is 2.4A.
Recommended Operating Conditions Output switch current - Primary side is 1A.
now customer's application input is 5V, they can see 1.2A peak inrush current at SN6505B startup, and in some projects, the output capacitor is even larger, so the peak current will be 1.8A. inrush current waveform is as below.
customer want to know what's the Absolute Maximum Ratings Peak output switch current @ 90 degree C of SN6505B?
can 1.8A inrush current be support by SN6505B at 90 degree C?
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In reply to Koteshwar Rao:
becuase SN6505B has a fixed soft start, if customer needs to reduce inrush current to below 1A, how does customer do?
In reply to Max Han:
Hi Max, Please do let us know what are the input and output capacitance values that customer is using so that I can comment whether the inrush current that customer observed is expected or not. Please also let us know how often does customer product power-up SN6505B throughout its life? For example, like once a day for 10 years? Let's assume that the inrush current is exceeding max recommended current of 1A for about 2ms during each power-up once every day for 10 years. In this case, the total accumulated time for which drain current exceeded max recommended current of 1A would be about 7.3 seconds. This does look like a small value and we expect SN6505B to support this current requirement without any issues. Let me know if you have any questions, thank you. Regards, Koteshwar Rao
The input cap and output cap value as below.Because it will used in EV car, it will be 10 times power up each day.
In reply to user5884228:
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