I am adding a Magnetic buzzer into the design. Buzzer part number is SMT8585-03H03LF from Bestar electronics.
Below are the specifications for quick glance.
Is it possible to get a LTspice model for this kind of buzzer. I see an Magnetic buzzer's equivalent circuit will be Inductor in series with resister. I can get resister value from specifications but no data on coil data.
Added the driving circuit planned. Open drain driver will drive the BJT. Open driver is emulated by DMN2005 in this simulation
Here, I have 2 constraints Based max driving current I am limiting to ~80mA,
- With Max Ic = 80mA--> total Collector resistance ~ 40Ohms, leaving coil resistance if i add 25 Ohms as collector resister - Because of the drop across this resister (25*0.080 =2V) voltage across buzzer is less ~1.2V.
- If i reduce the collector resistance to lets say 5 Ohms, Max collector current is =3.2/(5+16) = 155mA which is exceeding the Maximum current specification of the Buzzer
I am preferring to go with Option2 where i am exceeding Max current 155mA with 50% duty-cycle (spec is 100mA).