Dual Stepper Motor Driver
- Dual chopper driver
- 1000mA continuous output current per channel
- Specially matched to the Dual DAC NJU39610
- Packages (DIP22-D2/PLCC28-M2)
The NJM3774 is a switch-mode (chopper)，constantcurrent driver with two channels: one for each winding of a two-phase stepper motor. The NJM3774 is equipped with a TTL level compatible Disable input to simplify half-stepping operation. The circuit is well suited for microstepping 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 flip-flops implementing the switching control，and two output H-bridges. Voltage supply requirements are +5 V for logic and +10 to +45 V for the motor. Maximum output current is 1000mA per channel.
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