NJM37770D3

Overview

The NJM37770D3 is a bipolar stepper motor driver manufactured by Nisshinbo Micro Devices Inc. It operates with a supply voltage range of 4.75V to 5.25V and supports load voltages from 10V to 55V. The device delivers an output current of 1.3A and features two half-bridge outputs. It accepts parallel interface inputs and offers step resolutions of full and half-step modes. Packaged in a 16-DIP (0.325 inch, 8.25mm) through-hole format, it functions as a fully integrated driver with control and power stages. The component is rated for a junction temperature range of -20°C to 125°C.

Feature Summary

• Fully integrated driver combining control logic and power stages for bipolar stepper motors
• Supports both full-step and half-step resolution modes via parallel interface
• Provides dual half-bridge output configuration for independent coil driving

Applications

• General purpose bipolar stepper motor control systems
• Industrial automation equipment requiring integrated motor drive solutions
• Precision positioning applications utilizing half-step resolution

Procurement Notes

Verify the active status of this component carefully, as public records indicate it may be discontinued or not recommended for new designs. Confirm availability through authorized distributors and check for valid production dates. Ensure that any replacement strategies account for potential supply chain limitations associated with end-of-life products.

Selection Notes

Select this part when a fully integrated solution for bipolar stepper motors is required without external power components. It is suitable for applications needing 1.3A output capability within a 16-pin DIP package. Consider the parallel interface requirement and the specific voltage ranges for both logic supply and motor load during system design.

Part Context

This component belongs to the NJM37770 series of bipolar stepper motor drivers. It represents a dedicated integrated circuit designed to simplify motor control by embedding necessary power and logic functions into a single package. The series targets applications requiring reliable stepping control with minimal external circuitry complexity.

Replacement Considerations

Public data indicates this product has been marked as inactive or discontinued. Verify if the NJM37770AFM2 serves as a direct pin-compatible alternative or if other series members offer equivalent electrical characteristics for migration purposes.