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Product Detailed Parameters
- Description：IC MOTOR DRIVER 10V-30V 24SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Controller - Commutation, Direction Management
- Output Configuration：Pre-Driver - Half Bridge (3)
- Interface：Analog
- Technology：-
- Step Resolution：-
- Applications：General Purpose
- Current - Output：-
- Voltage - Supply：10V ~ 30V
- Voltage - Load：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Grade：-
- Qualification：-
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Overview
The MC33035DWR2 is a monolithic brushless DC motor controller from onsemi, designed for open-loop three-phase motor control systems. It operates within a supply voltage range of 10V to 30V and features a 6.25V reference output capable of powering sensors. The device integrates a rotor position decoder, frequency programmable sawtooth oscillator, and error amplifier. It includes high-current totem pole bottom drivers and open collector top drivers suitable for external MOSFETs. Key protection mechanisms include undervoltage lockout, cycle-by-cycle current limiting, and internal thermal shutdown. It is housed in a 24-pin SOIC-Wide package.
Feature Summary
- Integrates rotor position decoder and sawtooth oscillator for commutation sequencing
- Provides high-current drivers for external three-phase MOSFET bridge control
- Includes comprehensive protection with thermal shutdown and current limiting
Applications
- Open-loop three-phase brushless DC motor control
- Cooling fan motor drivers
- General purpose motor motion control systems
Procurement Notes
Verify the specific suffix (e.g., R2G) against the manufacturer's datasheet to confirm packaging type and compliance status. Ensure the ordering part number matches the required tape-and-reel quantity. Confirm that the NCV prefix variant is not required if automotive site and control changes are necessary for the application.
Selection Notes
Select this component for applications requiring integrated BLDC control without external microcontrollers. It supports selectable sensor phasings (60°/300° or 120°/240°). The device is suitable for driving power MOSFETs directly via its dedicated driver outputs. Consider the NCV33035 variant if automotive qualification and stricter change management protocols are mandated by the end-use environment.
Part Context
The MC33035 belongs to the second-generation monolithic brushless DC motor controller family. It consolidates active functions for full-featured open-loop control into a single chip. The DWR2 designation indicates a specific reel-based packaging format within the broader MC33035 product line, sharing core electrical characteristics with other variants like the MC33035DW.
Replacement Considerations
MC33035DWG
FAQ
What sensor phasing options does the MC33035 support?
The device allows selection between 60°/300° or 120°/240° sensor phasings.
Can the MC33035 be used for closed-loop servo applications?
Yes, it features a fully accessible error amplifier designed for closed-loop servo applications.
