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LMR38025-Q1: Overcurrent Limits

Part Number: LMR38025-Q1
Other Parts Discussed in Thread: LMR38025

Tool/software:

In my use case, the LMR38025-Q1 will nominally be operating with about 500mA load. However, they may be moments when I will have an additional step load of just over 2 more amps for approximately 5ms. I am trying to calcluate the IoutMax from the LMR38025, but I am a little confused on the equation given. What is the value of I-ls in equation 7? Is that the current load through the inductor at the time of the step change? Is it the low-side current limit, so I should use 2.25A as a conservative guess?