I am looking to power an N Channel Mosfet from pin 3 of a 555 timer to light 4 LED arrays . Each array has 12 LEDs made of of 4 strings of 3 LED. They will be flashed with an "on" time of about .2 seconds with about a 1 hz rate. VCC will be 12-13v.
I am debating on whether to use the larger, TO-252-3 package Mosfets, but the multi-channel SOIC-8 package mosfets are tempting, because they are smaller, and half the price....
One consideration is not only will the mosfet be able to handl the current, but more importantly how much performance (brightness) of the arrays will be lost to consumption by the Mosfets.
Suggestions on which package is welcome, and of course which Mosfet would be great too, either on the T0-252 or SOIC-8....
I am not an EE, or even close. This is my first post. I have built several PCB for fun using EasyEDA and have a basic understanding of electronics....
One SOIC-8 that I am looking at is the SI9148BDY. Can someone clarify when it states the continuous current rating is - say - 7amps, does that mean for all channels combined, or that each of the 3 channels can take this amount of current?
Thank you!
Charlie
I am debating on whether to use the larger, TO-252-3 package Mosfets, but the multi-channel SOIC-8 package mosfets are tempting, because they are smaller, and half the price....
One consideration is not only will the mosfet be able to handl the current, but more importantly how much performance (brightness) of the arrays will be lost to consumption by the Mosfets.
Suggestions on which package is welcome, and of course which Mosfet would be great too, either on the T0-252 or SOIC-8....
I am not an EE, or even close. This is my first post. I have built several PCB for fun using EasyEDA and have a basic understanding of electronics....
One SOIC-8 that I am looking at is the SI9148BDY. Can someone clarify when it states the continuous current rating is - say - 7amps, does that mean for all channels combined, or that each of the 3 channels can take this amount of current?
Thank you!
Charlie