onsemi

MC3479PG

MC3479PG Description

The MC3479PG from onsemi is a bipolar stepper motor driver IC designed for general-purpose applications, offering reliable performance in controlling stepper motors with precision. Operating within a voltage range of 7.2V to 16.5V, this driver supports half-bridge (4) output configuration and delivers a continuous output current of 350mA, making it suitable for driving small to medium-sized bipolar stepper motors. The device features CMOS technology, ensuring low power consumption and efficient operation. With 1 and 1/2 step resolution options, it provides flexibility in motor control, enabling smoother motion and finer positioning. Packaged in a 16-pin DIP (Dual In-line Package) and rated for through-hole mounting, the MC3479PG is ideal for prototyping and industrial applications where robustness is key.

MC3479PG Features

• Wide Voltage Range: Supports 7.2V to 16.5V input, accommodating various power supplies.
• High Output Current: Delivers 350mA per phase, suitable for driving bipolar stepper motors efficiently.
• Flexible Step Resolution: Offers full-step (1) and half-step (1/2) modes for precise motion control.
• Parallel Interface: Simplifies integration with microcontrollers and logic circuits.
• Thermal Robustness: Operates reliably in 0°C to 70°C environments, ensuring stability in industrial settings.
• Low Power CMOS Design: Enhances energy efficiency compared to older bipolar drivers.
• Obsolete Status: While no longer in production, it remains a proven solution for legacy systems.

MC3479PG Applications

The MC3479PG excels in applications requiring precise stepper motor control, such as:

• Industrial Automation: CNC machines, robotic arms, and conveyor systems.
• Office Equipment: Printers, scanners, and document feeders.
• Medical Devices: Precision pumps and diagnostic equipment.
• Consumer Electronics: Camera autofocus mechanisms and small automation projects.
  Its half-step capability reduces vibration and noise, making it ideal for applications where smooth operation is critical.

Conclusion of MC3479PG

The MC3479PG is a versatile and reliable bipolar stepper motor driver, offering a balance of performance, efficiency, and ease of integration. While marked as obsolete, its proven design continues to serve legacy systems and applications requiring moderate current drive and precise step control. Engineers valuing CMOS efficiency, flexible resolution, and robust thermal performance may still find it a viable choice for maintenance or retrofitting projects. For new designs, modern alternatives should be evaluated, but the MC3479PG remains a testament to onsemi's legacy in motor control technology.