MC33039DR2G

Overview

The MC33039DR2G is a closed-loop brushless DC motor adapter designed for precise speed regulation without magnetic or optical tachometers. It operates within a supply voltage range of 5.5 V to 9 V and supports a maximum collector-emitter voltage of 7.5 V. The device features an output current capability of 10 mA to 20 mA and draws a typical operating supply current of 3.9 mA to 5 mA. It functions in temperatures from -40°C to +85°C, housed in an 8-pin SOIC package with dimensions of 5 mm length, 4 mm width, and 1.5 mm height.

Feature Summary

• Digital detection of input transitions for improved low-speed motor operation
• TTL compatible inputs with hysteresis for noise immunity
• Internal shunt regulator allows operation from non-regulated voltage sources
• 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 tachometers

Procurement Notes

Verify the specific suffix DR2G corresponds to tape and reel packaging when ordering. Confirm RoHS compliance and lead-free status as per the manufacturer's latest documentation. Ensure the procurement channel provides valid traceability for onsemi components. Cross-reference the part number against official distributors to avoid counterfeit inventory. Validate that the 8-pin SOIC footprint matches the target PCB design before finalizing purchase orders.

Selection Notes

Select this component when implementing closed-loop control for BLDC motors without external sensing hardware. It is suitable for direct powering from MC33035 reference circuits due to its 5.5 V minimum operation. Consider the internal shunt regulator if the system lacks a regulated voltage source. The TTL-compatible inputs simplify interface logic requirements. Verify thermal performance within the specified -40°C to +85°C range for the intended environment.

Part Context

The MC33039 belongs to the MC33039 series of motor controllers manufactured by onsemi. It is primarily intended for use with the MC33035 brushless motor controller but offers cost-effective solutions for other closed-loop speed control applications. The device integrates three input buffers, digital edge detectors, a programmable monostable, and an inverter output to handle various sensor phasing conventions.

Replacement Considerations

MC33039D

FAQ

Does the MC33039 require an external tachometer for speed control?

No, the device is designed to allow precise speed regulation without the need for a magnetic or optical tachometer.

What is the purpose of the inverter output?

The inverter output facilitates easy conversion between 60°/300° and 120°/240° sensor phasing conventions.