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LT1937 - what is a maximum current to drive 1 power led?

Category: Hardware
Product Number: LT1937

Hi, 

Can LT1937 provide current  300mA? In case I will use Rset = 0.5Ω, the current shall ~250mA (based on LTSpice simulation (Vin=2,5V).

The question if the LT1937 can drive this value of current?

best regards

M.M.

Parents
  • FormerMember
    0 FormerMember
on Jan 16, 2023 6:21 PM

Hello,

No, it cannot. The maximum switch current it can withstand is 320 mA, and it will not be able to provide a 300mA output.

Regards,

Jhun

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  • FormerMember
    0 FormerMember
on Jan 16, 2023 6:21 PM

Hello,

No, it cannot. The maximum switch current it can withstand is 320 mA, and it will not be able to provide a 300mA output.

Regards,

Jhun

Children on Jan 18, 2023 1:21 AM in reply to MaciekM
Or LT3593?

LT3593 is not feasible since it has a minimum input voltage of 2.7V

what about LT1932?

I think you should try to use LTSpice and see if the current is okay. Switch current is dependent on Vin, Vout and Iout you would need.

Regards,

Jhun