Let me start by sayting that I am a mechanical engineer that loves to tinker with circuits. With that being said I am not very good.
I am trying to drive a 10 LED automotive light bar using a LM3914. The light bar says it draws a max of 250mA when all lights are on. I plan on only using 5 of the 10 outputs on the LM3914, so that means each of the 5 outputs will drive 2 LED's. I am concerned that the current draw may be to much for the LM3914, but I am not sure. I am also concerned that having 1 output drive two LED's may get the LM3914 to hot. I have looked at the LM3914 spec sheet and I am totally lost.
Should I drive the 10 LED's off of 5 transisters?
I am trying to drive a 10 LED automotive light bar using a LM3914. The light bar says it draws a max of 250mA when all lights are on. I plan on only using 5 of the 10 outputs on the LM3914, so that means each of the 5 outputs will drive 2 LED's. I am concerned that the current draw may be to much for the LM3914, but I am not sure. I am also concerned that having 1 output drive two LED's may get the LM3914 to hot. I have looked at the LM3914 spec sheet and I am totally lost.
Should I drive the 10 LED's off of 5 transisters?