Overview
The MC33039P is a high-performance closed-loop speed control adapter designed by Onsemi for use in brushless DC motor control systems. This device enables precise speed regulation without the need for a magnetic or optical tachometer. It is primarily intended for use with the MC33035 brushless motor controller but can be used in various other closed-loop speed control applications. The MC33039P features three input buffers with hysteresis for noise immunity, three digital edge detectors, a programmable monostable, and an internal shunt regulator. Additionally, it includes an inverter output for converting between different sensor phasing conventions.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Operating Voltage Range | VCC | 5.5 | 9 | V | |
| Power Supply Current | ICC | 1.8 | 3.9 | 5.0 | mA |
| Zener Voltage (IZ = 10 mA) | VZ | 7.5 | 8.25 | 9.0 | V |
| Output Current (Pins 4, 5), Sink or Source | IDRV | 20 | mA | ||
| Operating Junction Temperature | TJ | 150 | °C | ||
| Operating Ambient Temperature Range | TA | -40 | 85 | °C | |
| Storage Temperature Range | Tstg | -65 | 150 | °C | |
| Input Threshold Voltage High State | VIH | 2.1 | 2.4 | V | |
| Input Threshold Voltage Low State | VIL | 0.7 | 1.0 | V | |
| Output Pulse Width (Pin 5) | tPW | 205 | 225 | 245 | μs |
Key Features
- Digital detection of each input transition for improved low-speed motor operation
- TTL compatible inputs with hysteresis for noise immunity
- Operation down to 5.5 V for direct powering from the MC33035 reference
- Internal shunt regulator allows operation from a non-regulated voltage source
- Inverter output for easy conversion between 60°/300° and 120°/240° sensor phasing conventions
- Pb-free packages are available
Applications
The MC33039P is designed for use in brushless DC motor control systems, particularly with the MC33035 brushless motor controller. It can be used in various closed-loop speed control applications, including but not limited to:
- Brushless DC motor speed control systems
- Industrial automation and control systems
- Automotive systems requiring precise motor speed control
- Medical devices and equipment
- Consumer electronics with motor control requirements
Q & A
- What is the primary function of the MC33039P?
The MC33039P is a high-performance closed-loop speed control adapter designed for use in brushless DC motor control systems, enabling precise speed regulation without the need for a magnetic or optical tachometer.
- What are the key components of the MC33039P?
The device includes three input buffers with hysteresis, three digital edge detectors, a programmable monostable, an internal shunt regulator, and an inverter output.
- What is the operating voltage range of the MC33039P?
The MC33039P operates within a voltage range of 5.5 V to 9 V.
- What is the purpose of the inverter output in the MC33039P?
The inverter output is used for converting between 60°/300° and 120°/240° sensor phasing conventions.
- Can the MC33039P operate without a regulated power supply?
Yes, the internal shunt regulator allows the MC33039P to operate from a non-regulated voltage source.
- What are the temperature ranges for the MC33039P?
The operating ambient temperature range is -40°C to +85°C, and the storage temperature range is -65°C to +150°C.
- What is the maximum output current of the MC33039P?
The maximum output current (sink or source) is 20 mA.
- Is the MC33039P available in Pb-free packages?
Yes, Pb-free packages are available for the MC33039P.
- What is the typical power supply current of the MC33039P?
The typical power supply current is 3.9 mA.
- What is the output pulse width range of the MC33039P?
The output pulse width ranges from 205 μs to 245 μs.
