NJM3717FM

Overview

The NJM3717FM is a bipolar stepper motor driver manufactured by Nisshinbo Micro Devices Inc. It integrates logic input, current sensing, monostable multivibrator, and H-bridge output stages with built-in protection diodes. The device supports parallel interface control and offers full integration of control and power levels. Key electrical parameters include a supply voltage range of 4.75V to 5.25V, load voltage from 10V to 45V, and an output current of 1A. It operates within a junction temperature range of -20°C to 125°C and utilizes a 28-PLCC package.

Feature Summary

• Integrates LS-TTL compatible logic input stage with current sensor and monostable multivibrator
• Features high power H-bridge output stage with built-in protection diodes
• Provides full integration of control and power levels for bipolar stepper motors

Applications

• General purpose stepper motor control systems
• Motion control applications requiring integrated driver solutions
• Industrial automation equipment utilizing bipolar stepper motors

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm package integrity and pin alignment against the 28-PLCC specification before implementation. Review official product change notifications for any historical manufacturing updates that may affect compatibility or performance characteristics in existing designs.

Selection Notes

Select this component when a fully integrated bipolar stepper driver with parallel interface is required. Ensure system design accommodates the specific 4.75V to 5.25V supply voltage constraint. Verify that the 1A output current rating meets load requirements and that the 28-PLCC surface mount package fits the PCB layout constraints.

Part Context

This part belongs to the NJM3717 family of stepper motor drivers. It shares functional similarities with variants like NJM3717D2 and NJM3717E2, differing primarily in packaging technology. While other versions utilize DIP or EMP packages, this specific model employs a 28-PLCC form factor suitable for surface mount assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The component is listed as discontinued. Designers should evaluate alternative integrated stepper drivers from the same manufacturer or industry equivalents that match the required voltage, current, and interface specifications.