Description
NJM3774 DUAL STEPPER MOTOR DRIVER s GENERAL .
The NJM3774 is a switch-mode (chopper), constantcurrent driver with two channels: one for each winding of a two-phase stepper motor.
Features
* Dual chopper driver
* 1000 mA continuous output current per channel
* Specially matched to the Dual DAC NJU39610
* Packages DIP22 / PLCC28
s BLOCK DIAGRAM
Phase 1
Dis1 VR1
C1
NJM3774
VCC
V CC
* +
E1
RQ S
Logic
+
* RC
Logic
+
SQ
R
Applications
* together with the matching dual DAC NJU39610. In full/half stepping applications, the NJM3517 can be used as a phase generator (translator) to derive the necessary signals for the NJM3774. The NJM3774 contains a clock oscillator, which is common for both driver channels, a set of comparators and fli
