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LM3414 Current Limit

Kai Hsiao
Guru 12675 points
Other Parts Discussed in Thread: LM3414, TPS92511

Dear Sir

I'm designing LM3414 and have few question

1. As datasheet show ,the minimum current setting is 350mA ,but I saw TPS92511 can support under 150mA ,is the reason of the accuracy??

2. What current limit value of LM3414?? I saw TPS92511 can support 1.2A current limit 

Thanks

  • 0
    TI__Mastermind 25500 points
    You can run currents lower than 350mA as shown in the datasheet curves. You will lose a little accuracy but it will still be pretty good, but you do need to make sure you run in CCM so it will require a higher inductor value generally. The current limit of the LM3414 is set at 3x the current set by the IADJ resistor as stated in the current limit section of the datasheet.