SPMD250STP Datasheet, PDF (1/29 Pages) STMicroelectronics – 2.5 A bipolar stepper motor drive module

SPMD250STP
2.5 A bipolar stepper motor drive module
Features
■ Wide supply voltage range
■ Full/Half step drive capability
■ Logic signals TTL/CMOS compatible
■ Programmable motor phase current and
chopper frequency
■ Selectable Slow/Fast current decay
■ Synchronization for multimotor applications
■ Remote shut-down
■ Home position indication
Description
The SPMD250STP is a drive module that directly
interface a microprocessor to a two phase,
bipolar, permanent magnet stepper motors.
The phase current is chopper controlled, and the
internal phase sequence generation reduces the
burden of the controller and it simplifies software
development. The SPMD250STP has PowerMOS
outputs to significantly reduce both commutation
and conduction losses. A further benefit offered
by the SPMD250STP is the complete protection
of the outputs against any type of shorts.
Table 1.
Device summary
Order code
SPMD250STP
January 2008
Rev 1
1/29
www.st.com
29