MC33030DWR2

Overview

The MC33030DWR2 is a monolithic integrated circuit designed as a brushless DC motor controller. It integrates essential functions for open-loop control of three-phase motors, including a rotor position decoder, temperature-compensated reference, sawtooth oscillator, error amplifier, and PWM comparator. The device features high-current totem-pole bottom drivers and open-collector top drivers suitable for power MOSFETs. It operates within a voltage range of 10V to 30V and includes undervoltage lockout, cycle-by-cycle current limiting, and internal thermal shutdown protection.

Feature Summary

• Integrates complete open-loop control logic for three-phase brushless DC motors
• Provides high-current output drivers optimized for external MOSFET switching
• Includes built-in safety mechanisms such as thermal shutdown and current limiting

Applications

• Open-loop control of three-phase brushless DC motors
• Fan and pump speed control systems
• Industrial automation motor drives

Procurement Notes

Verify the specific suffix 'DWR2' against official onsemi documentation to confirm package type (SOIC-16) and reel quantity. Ensure compatibility with required operating temperatures and supply voltages. Confirm RoHS compliance status for the specific manufacturing lot. Cross-reference the datasheet revision date to ensure all electrical characteristics match design requirements.

Selection Notes

Select this component for applications requiring simplified open-loop BLDC control without complex sensor feedback loops. It is suitable where cost-effective integration of driver and control logic is prioritized over closed-loop precision. Consider the available drive current capabilities when sizing external MOSFETs. Evaluate the need for thermal management given the integrated shutdown features.

Part Context

The MC33030 belongs to onsemi's family of brushless DC motor controllers, evolving from earlier models like the MC33034. It offers a streamlined feature set compared to full-featured variants, focusing on essential open-loop operations. This simplification reduces component count and design complexity for standard motor control applications.

Replacement Considerations

Direct substitutes may include other onsemi BLDC controllers such as the MC33033 or MC33035, depending on whether closed-loop capabilities or additional features are required. Verify pin compatibility and electrical specifications before substitution.