Overview
The MC33063ADX, produced by Fairchild Semiconductor (now part of ON Semiconductor), is a monolithic regulator subsystem designed for DC to DC conversion. This device is part of the MC33063A series and is intended for use in step-down, step-up, or inverting switching regulators. It features a temperature-compensated bandgap reference, a duty cycle control oscillator, driver, and a high-current output switch. This component is versatile and can be used in a variety of power supply applications due to its adjustable output voltage and wide operating frequency range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.0 to 40 | V |
| Output Switch Current | 1.5 | A |
| Operating Frequency Range | 100 Hz to 100 kHz | Hz |
| Operating Temperature Range | 0 to +70°C (or -40°C to 85°C for some versions) | °C |
| Package Type | 8-SOP, 8-DIP, 8-SOIC | |
| Total Device Supply Current (VCC=5 to 40V) | 5 mA | mA |
| Input Bias Current (VI=0V) | 50 to 400 nA | nA |
Key Features
- Operation from 3.0 to 40V input voltage.
- Short circuit current limiting.
- Low standby current.
- Adjustable output voltage.
- High-current output switch capable of 1.5A without external transistors.
- Wide operating frequency range from 100Hz to 100kHz.
- Support for step-down, step-up, or inverting switching regulators.
- Temperature-compensated bandgap reference.
Applications
The MC33063ADX is suitable for a variety of DC-DC converter applications, including:
- Step-down (buck) converters.
- Step-up (boost) converters.
- Inverting converters.
- Series pass regulators.
- Power supplies for electronic devices requiring adjustable and efficient voltage regulation.
Q & A
- What is the input voltage range of the MC33063ADX?
The input voltage range is from 3.0 to 40V.
- What is the maximum output switch current of the MC33063ADX?
The maximum output switch current is 1.5A.
- What are the possible operating frequencies of the MC33063ADX?
The operating frequency range is from 100 Hz to 100 kHz.
- What are the available package types for the MC33063ADX?
The available package types include 8-SOP, 8-DIP, and 8-SOIC.
- What is the typical total device supply current at VCC=5 to 40V?
The typical total device supply current is 5 mA.
- Does the MC33063ADX support short circuit current limiting?
Yes, it supports short circuit current limiting.
- What types of converters can be built using the MC33063ADX?
You can build step-down (buck), step-up (boost), or inverting converters.
- Is the MC33063ADX suitable for high-temperature environments?
Yes, it operates from -40°C to 85°C for some versions, and 0 to +70°C for others.
- Does the MC33063ADX have an adjustable output voltage?
Yes, the output voltage is adjustable.
- What is the purpose of the temperature-compensated bandgap reference in the MC33063ADX?
The temperature-compensated bandgap reference ensures stable voltage regulation across different temperatures.
