Greets,
I've got a load (led strip segment) that consumes about 350mA when connected directly to the 12V PSU, but when I use a uln2803apg driver IC in between the DMM reads about 250mA, how is that possible? Does it have something to do with the -VCE(sat) Collector-emitter saturation voltage-? The datasheet reads that at 350mA collector current the Vce(sat) is typically 1.3V. Any ideas?
p.s. I've tried sinking the current through 1 and multiple (darlington collector) pins of the uln2803 connected together, but the current stays at ca. 250mA.
I've got a load (led strip segment) that consumes about 350mA when connected directly to the 12V PSU, but when I use a uln2803apg driver IC in between the DMM reads about 250mA, how is that possible? Does it have something to do with the -VCE(sat) Collector-emitter saturation voltage-? The datasheet reads that at 350mA collector current the Vce(sat) is typically 1.3V. Any ideas?
p.s. I've tried sinking the current through 1 and multiple (darlington collector) pins of the uln2803 connected together, but the current stays at ca. 250mA.
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