I'm making an LED flasher as an indicator, for use on a 12 to 15v supply. Directly driving an LED using a TS555CN timer IC. around one second off and a few milli-second on, just long enough to spot, so as to minimise current consumption. LED will be between +ve and output, so sinking current, but I'm struggling to track down data on how many milliamps this IC can safely sink on the output pin. Anyone know?

If he LM555CN is the same, then according to High Level Output Current: 50 mA Low Level Output Current: - 200 mA Pd - Power Dissipation: 600 mW

TS555CN output sink maximum current?

Jul 15, 2020 22 Replies

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Harry Bloomfield, Esq. 6 years ago

alan_m explained :

I have a choice of one live all the time, two which go off with the ignition.

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The Natural Philosopher 6 years ago

But that is not the quoted junction to case thermal resistance. It SAYS it's 125C/W.

In the specs....

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Smolley 6 years ago

I saw a 2n3055 somewhere.....my goodness me

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