The data sheet has this to say...
"Care should be taken to limit
the current flow between W and B in the direct contact state to
a maximum value of 5 mA to avoid degradation or possible destruction
of the internal switch contact."
My circuit looks like this...
It is a Cmos 555 running a pwm signal to a l298 dual hbridge. The duty cycle is controlled by the ad5220 digital pot. Recently, when code is run to speed up the motor, speed falters and quivers. And at the other extreme the motors are not turning so I can't tell if the same thing is happening. I suspect I should have used a bigger than 220ohm resistor on the ad5220?
(5-.7)/220 = 20ma...
"Care should be taken to limit
the current flow between W and B in the direct contact state to
a maximum value of 5 mA to avoid degradation or possible destruction
of the internal switch contact."
My circuit looks like this...
It is a Cmos 555 running a pwm signal to a l298 dual hbridge. The duty cycle is controlled by the ad5220 digital pot. Recently, when code is run to speed up the motor, speed falters and quivers. And at the other extreme the motors are not turning so I can't tell if the same thing is happening. I suspect I should have used a bigger than 220ohm resistor on the ad5220?
(5-.7)/220 = 20ma...
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