ROHM's bipolar, pin-compatible stepping motor drivers provide users with both cost savings and design flexibility. Instead of using the highest rated part to cover all applications when users can accept a lower current solution, they can select a more economical part. Higher current ratings are often available when required and within the same series, they are package and pin compatible. This can provide an alternative when a motor supplier increases the current capability of a motor or a supplier change occurs and the replacement motor requires more current than the one it replaced. The same applies simply if more horsepower is required in a new design.
ROHM's stepping motor driver series includes standard, microstep, low- and high-voltage families with CLK-IN (clock input) or PARA-IN (parallel input) control. For drivers with the CLK-IN feature, a built-in translator allows IC control using a clock signal, which simplifies system design by reducing the number of port connections to an MCU and PC board traces.
- Single 5.5 V, 28 V, 42 V (max.) supply voltage (internal voltage regulator)
- DMOS output (P-channel + N-channel)
- Io (max): 2.0 A
- Constant current PWM driver
- Serial/CLK-IN with built-in translator
- No charge pump required
- Mixed decay mode
- Linearly variable fast/slow decay ratio
- Integrated 4-bit DAC
- Ghost supply prevention
Bipolar Stepping Motor Drivers