Dual Stepper Motor Driver
- Dual chopper driver
- 900mA continuous output current per channel
- Digital filter on chip eliminates external filtering components
- Package (SOP24 JEDEC 300 mil(Batwing))
The NJM3777 is a switch-mode (chopper)，constant-current driver with two channels: one for each winding of a two-phase stepper motor. The NJM3777 is equipped with a Disable input to simplify half-stepping operation. The NJM3777 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，including recirculation diodes. Voltage supply requirements are + 5 V for logic and +10 to +45 V for the motor. Maximum output current is 900mA per channel.
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