I have the following (simplified) circuit,
And, according to LTspice the LED current will be 22mA. How accurate is this? The LEDs are rated at 20mA but will be mutiplexed with an average current of ⅓ of that. However, during a crash or update they could be on constantly. The LEDs I'm using state a Vf of 2.8 to 3V, the LEDs chosen have a Vf of 2.9V.
Should I worry about the extra 10% current? Should I change R2 to 170R?
I know there are a few LTspice gurus on here and hope for an answer. Thanks in advance for any help.
Mike. Asc file attached.
And, according to LTspice the LED current will be 22mA. How accurate is this? The LEDs are rated at 20mA but will be mutiplexed with an average current of ⅓ of that. However, during a crash or update they could be on constantly. The LEDs I'm using state a Vf of 2.8 to 3V, the LEDs chosen have a Vf of 2.9V.
Should I worry about the extra 10% current? Should I change R2 to 170R?
I know there are a few LTspice gurus on here and hope for an answer. Thanks in advance for any help.
Mike. Asc file attached.