Overview
The MC33063AVDR2 is a monolithic control circuit designed by ON Semiconductor for DC-to-DC conversion applications. This device is part of the MC34063A series and is specifically tailored for step-up, step-down, and voltage-inverting converter designs. It integrates all the primary functions necessary for these conversions, including an internal temperature-compensated reference, a comparator, a controlled duty cycle oscillator, an active current limit circuit, and a high current output switch.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.0 to 40 | V |
| Output Switch Current | Up to 1.5 | A |
| Frequency Operation | Up to 100 kHz | |
| Precision Reference Voltage | 2% accuracy | |
| Operating Junction Temperature | -40 to +125 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Saturation Voltage (ISW = 1.0 A) | 0.45 to 1.3 | V |
| DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C) | 50 to 75 | |
| Collector Off-State Current (VCE = 40 V) | 0.01 to 100 μA | |
| Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V) | 1.4 to 6.0 mV | |
| Input Bias Current (Vin = 0 V) | -20 to -400 nA |
Key Features
- Operation from 3.0 V to 40 V input voltage range.
- Low standby current.
- Current limiting to prevent overcurrent conditions.
- Output voltage adjustable.
- Frequency operation up to 100 kHz.
- Precision 2% reference voltage.
- Pb-free packages available.
- Internal temperature-compensated reference and comparator.
- Controlled duty cycle oscillator with active current limit circuit.
- High current output switch suitable for various DC-to-DC converter applications.
Applications
The MC33063AVDR2 is versatile and can be used in a variety of DC-to-DC converter applications, including:
- Step-up converters to increase the input voltage to a higher output voltage.
- Step-down converters to reduce the input voltage to a lower output voltage.
- Voltage-inverting converters to convert a positive input voltage to a negative output voltage.
- Power supplies for electronic devices requiring regulated voltages.
- Battery-powered systems where efficient voltage conversion is crucial.
Q & A
- What is the input voltage range of the MC33063AVDR2?
The input voltage range is from 3.0 V to 40 V.
- What is the maximum output switch current of the MC33063AVDR2?
The maximum output switch current is up to 1.5 A.
- What is the frequency operation range of the MC33063AVDR2?
The frequency operation range is up to 100 kHz.
- What is the precision of the internal reference voltage?
The internal reference voltage has a precision of 2%.
- What are the operating temperature ranges for the MC33063AVDR2?
The operating junction temperature range is -40°C to +125°C, and the storage temperature range is -65°C to +150°C.
- What types of DC-to-DC converters can the MC33063AVDR2 be used for?
The MC33063AVDR2 can be used for step-up, step-down, and voltage-inverting converters.
- Does the MC33063AVDR2 have current limiting features?
Yes, it has an active current limit circuit to prevent overcurrent conditions.
- Is the MC33063AVDR2 available in Pb-free packages?
Yes, Pb-free packages are available for the MC33063AVDR2.
- What is the typical application of the MC33063AVDR2 in power supplies?
The MC33063AVDR2 is used in power supplies to provide regulated voltages for electronic devices.
- Can the MC33063AVDR2 be used in battery-powered systems?
Yes, it is suitable for battery-powered systems where efficient voltage conversion is necessary.
