MC33039P

Overview

The MC33039P is a high-performance closed-loop speed control adapter designed for brushless DC motor systems. It enables precise speed regulation without magnetic or optical tachometers. The device features three TTL-compatible input buffers with hysteresis, three digital edge detectors, and a programmable monostable timer. An internal shunt regulator supports operation from non-regulated sources. It operates on supply voltages between 5.5 V and 9 V. The component is housed in an 8-pin DIP package.

Feature Summary

• Digital detection of each input transition to improve low-speed motor operation
• TTL compatible inputs with hysteresis for noise immunity
• Internal shunt regulator allows operation from a non-regulated voltage source
• Inverter output for easy conversion between sensor phasing conventions

Applications

• Brushless DC motor control systems
• Closed-loop speed control applications
• Systems requiring precise speed regulation without external sensors

Procurement Notes

Verify the specific suffix 'P' indicates the PDIP package variant when sourcing. Confirm RoHS compliance status as availability may vary by production batch. Ensure the application circuit matches the 5.5V to 9V operating range. Check for lead-free packaging requirements if applicable to the target assembly process.

Selection Notes

Select this component when designing brushless DC motor drives that require closed-loop feedback without additional sensing hardware. It is suitable for applications needing direct powering from reference outputs. Consider the DIP package for prototyping or through-hole manufacturing environments where surface mount options are not preferred.

Part Context

This part belongs to the MC33039 series of motor controllers. It is primarily intended for use with the MC33035 brushless motor controller but can be used in other closed-loop speed control applications. The series provides cost-effective solutions for precise speed regulation in various industrial and consumer electronic devices.

Replacement Considerations

MC33039DR2G (SOIC-8 package)

FAQ

Does the MC33039P require a magnetic or optical tachometer?

No, the implementation allows precise speed regulation without the need for a magnetic or optical tachometer.

What is the purpose of the inverter output?

The inverter output is provided for use in systems that require conversion of sensor phasing, such as between 60°/300° and 120°/240° conventions.