Part A
MC33039DR2G
Onsemi
- Lifecycle
- Active
- Stock
- 7293 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Motor Treiber, Controller
Replacement verdict
Not a drop-in replacement
The MC33039DR2G and MC33025DWR2G are functionally unrelated devices and cannot serve as substitutes for one another. The MC33039DR2G is a closed-loop brushless DC motor speed controller, while the MC33025DWR2G is a high-speed dual-ended PWM controller. Their core functions, pinouts, and application domains differ fundamentally, making direct replacement impossible without complete circuit redesign.
Different device function
Different output type
Different pin configuration
Different application domain
Parts at a glance
Part B
MC33025DWR2G
Onsemi
- Lifecycle
- Active
- Stock
- 9800 Stückzahl
- Package
- SOIC-W-16
- Series
- PMIC AC DC Wandler, Offline Schalter
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | MC33039DR2G | MC33025DWR2G | Why it matters |
|---|---|---|---|
| Manufacturer | onsemi | onsemi | Same manufacturer ensures consistent quality and documentation, but the two parts belong to different product families. |
| Function / Device Type | Closed-loop brushless DC motor speed controller | High-speed PWM controller | These are fundamentally different functions, so they are not functionally substitutable in a given design. |
| Package / Case | SOIC-8 | SOIC-16 (wide body) | Different package footprints and pin counts prevent direct drop-in replacement on the same PCB. |
| Number of Pins | 8 | 16 | Pin count mismatch means the parts cannot share the same socket or land pattern. |
| Supply Voltage Range | 6.5 V to 18 V | 8.5 V to 30 V | Operating voltage windows differ, affecting compatibility with the surrounding power rail design. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both share the same industrial temperature range, so thermal environment is not a differentiator. |
| Mounting Type | Surface Mount | Surface Mount | Both are SMD devices, so assembly method is compatible, though footprint still differs. |
| Typical Application | Brushless DC motor control, tachometer feedback | Switch-mode power supplies, PWM regulation | Target applications differ, confirming the parts serve distinct roles in a system. |
| Packaging / Reel | Tape & Reel | Tape & Reel | Both are supplied in tape and reel, so automated assembly feeding is compatible. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | MC33039DR2G | MC33025DWR2G |
|---|---|---|
| Part Status | Active | Obsolete |
| Output Isolation | - | Isolated |
| Internal Switch(s) | - | No |
| Topology | - | Half-Bridge |
| Voltage - Start Up | - | 9.2 V |
| Voltage - Supply (Vcc/Vdd) | - | 8.4V ~ 30V |
| Duty Cycle | - | 45% |
| Frequency - Switching | - | 1MHz |
| Fault Protection | - | Current Limiting |
| Control Features | - | Frequency Control, Soft Start |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 105°C (TA) |
| Motor Type - ACDC | Brushless DC (BLDC) | - |
| Function | Controller - Speed | - |
| Output Configuration | Pre-Driver - Half Bridge (3) | - |
| Interface | Parallel | - |
| Technology | Bipolar | - |
| Applications | General Purpose | - |
| Voltage - Supply | 5.5V ~ 9V | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
Are the MC33039DR2G and MC33025DWR2G interchangeable in the same circuit?
No. The MC33039DR2G is a brushless DC motor controller predriver, while the MC33025DWR2G is a high-speed PWM controller. They have different functions, pinouts, and internal architectures, so they are not interchangeable.
What are the primary functions of the MC33039DR2G and MC33025DWR2G?
The MC33039DR2G is a closed-loop brushless motor controller predriver designed for three-phase brushless DC motors. The MC33025DWR2G is a fixed-frequency current-mode PWM controller intended for switching power supply applications.
Do the MC33039DR2G and MC33025DWR2G come in the same package type?
Both devices are offered in SOIC-16 packages. The MC33039DR2G is specified as a 16-pin SOIC, and the MC33025DWR2G is also specified as a 16-pin SOIC wide-body package.
Can the MC33039DR2G directly drive a three-phase brushless DC motor?
No. The MC33039DR2G is a predriver and requires external power MOSFETs or IGBTs to drive the motor phases. It provides the control and gate-drive signals but does not deliver the motor current directly.
What is the typical operating frequency range of the MC33025DWR2G?
The MC33025DWR2G is a high-speed PWM controller capable of operating at switching frequencies up to 1 MHz, depending on the external timing resistor and capacitor values.
Does the MC33039DR2G include an internal oscillator for commutation timing?
No. The MC33039DR2G does not contain an internal oscillator for commutation. It relies on external Hall-effect sensor inputs to determine rotor position and commutation sequencing.
Are the MC33039DR2G and MC33025DWR2G RoHS compliant?
Yes. Both the MC33039DR2G and MC33025DWR2G are RoHS compliant and halogen-free, as indicated by the "G" suffix in their part numbers and confirmed in manufacturer documentation.
Can the MC33025DWR2G be used for motor control applications?
No. The MC33025DWR2G is designed specifically for PWM power supply control, not for motor commutation or brushless DC motor control. It lacks the Hall sensor inputs and three-phase output logic required for motor control.