Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Driving a 3v dc motor

Status
Not open for further replies.

marsten

Computer
Joined
Feb 25, 2004
Messages
1
Location
FI
Hi,

I'd like to drive a small 3V motor with a mosfet driver ic, but couldn't find a proper one. I'm looking for something like MAX4420, but with lower supply voltage.
 
One possible solution would be to use a discrete MOS-transistor to drive the motor and a separate control electronics to drive the MOS-transistor.

You should (probably) also have a DC-DC converter to increase the voltage of the control electronics. A higher gate voltage allows the MOS to be properly 'on'.

Note also that the 1.5 ohm output impedance of MAX4420 seems to be a bit high to drive a motor.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top