Overview
The MC33063MNTXG is a monolithic control circuit from onsemi, part of the MC33063A series. This device is designed for DC-DC conversion and includes the primary functions required for buck, boost, and inverting switching regulators. It features an internal temperature-compensated reference, comparator, controlled duty cycle oscillator, active current limit circuit, driver, and a high current output switch. This regulator is optimized for use in a variety of applications with a minimal number of external components.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.0 V to 40 V |
| Output Current | 1.5 A |
| Switching Frequency | Up to 100 kHz |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | DFN-8 4x4mm |
| Topology | Step-Up/Step-Down/Inverting |
| Control Mode | Hysteretic |
| Reference Voltage Accuracy | 2% Precision Reference |
| Standby Current | Low Standby Current |
Key Features
- Operation from 3.0 V to 40 V input voltage range
- Output switch current up to 1.5 A
- Adjustable output voltage
- Frequency operation up to 100 kHz
- 2% precision reference voltage
- Low standby current
- Internal temperature-compensated reference and comparator
- Controlled duty cycle oscillator with active current limit circuit
- High current output switch
Applications
- DC-DC power supplies
- Cigarette lighter adapters (CLA)
- Fan controllers
- Step-down (buck), step-up (boost), and voltage-inverting applications
Q & A
- What is the input voltage range of the MC33063MNTXG?
The input voltage range is from 3.0 V to 40 V. - What is the maximum output current of the MC33063MNTXG?
The maximum output current is 1.5 A. - What is the switching frequency of the MC33063MNTXG?
The switching frequency can be up to 100 kHz. - What is the operating temperature range of the MC33063MNTXG?
The operating temperature range is from -40°C to +85°C. - What package type is the MC33063MNTXG available in?
The MC33063MNTXG is available in a DFN-8 4x4mm package. - What are the typical applications of the MC33063MNTXG?
Typical applications include DC-DC power supplies, cigarette lighter adapters, fan controllers, and step-down, step-up, and voltage-inverting applications. - Does the MC33063MNTXG have a dedicated enable pin?
No, for a dedicated enable pin and higher switching frequency, consider the NCP3064. - What is the precision of the reference voltage in the MC33063MNTXG?
The reference voltage has a precision of 2%. - Is the MC33063MNTXG suitable for automotive applications?
Yes, the NCV33063A, an extended temperature version of the MC33063A, is suitable for automotive applications with an operating temperature range of -40°C to +125°C. - Where can I find more detailed design information for the MC33063MNTXG?
Refer to Application Notes AN920A/D and AN954/D for additional design information.
