Overview
The MC34063ADR, produced by Texas Instruments, is a versatile 1.5-A peak boost, buck, and inverting switching regulator. This device is part of the MC34063A series, which includes all the primary circuitry necessary for building simple DC-DC converters. The MC34063ADR operates in a SOIC (D) package with 8 pins and is characterized for operation from 0°C to 70°C. It is designed to be used in a variety of DC-DC converter topologies with minimal external components.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 3 | 40 | V | |
| Output Switch Current | 1.5 | A | ||
| Oscillator Frequency | 24 | 33 | 42 | kHz |
| Precision Internal Reference | 2% | |||
| Operating Temperature Range | 0 | 70 | °C | |
| Supply Current (VCC = 5 V to 40 V) | 4 | mA | ||
| Short-Circuit Current Limiting | 1.1 | A | ||
| Output Ripple (VIN = 25 V, IO = 500 mA) | 120 | mVpp | ||
| Efficiency (VIN = 25 V, IO = 500 mA) | 83.7% |
Key Features
- Wide Input Voltage Range: 3 V to 40 V
- High Output Switch Current: Up to 1.5 A
- Adjustable Output Voltage
- Oscillator Frequency Up to 100 kHz
- Precision Internal Reference: 2%
- Short-Circuit Current Limiting
- Low Standby Current
- Internal temperature-compensated reference, comparator, controlled duty cycle oscillator with active current limit circuit, driver, and high-current output switch
Applications
The MC34063ADR is suitable for various DC-DC converter applications, including:
- Boost converters
- Buck converters
- Inverting converters
- Step-Up and Step-Down converters
- Voltage-Inverting applications
These devices are particularly useful in systems where minimal external components are desired, making them ideal for compact and efficient power supply designs.
Q & A
- What is the input voltage range of the MC34063ADR?
The input voltage range is from 3 V to 40 V.
- What is the maximum output switch current of the MC34063ADR?
The maximum output switch current is up to 1.5 A.
- What is the oscillator frequency range of the MC34063ADR?
The oscillator frequency range is up to 100 kHz.
- What is the precision of the internal reference voltage?
The precision of the internal reference voltage is 2%.
- Does the MC34063ADR have short-circuit current limiting?
Yes, the MC34063ADR has short-circuit current limiting.
- What is the operating temperature range of the MC34063ADR?
The operating temperature range is from 0°C to 70°C.
- What types of DC-DC converters can be built using the MC34063ADR?
The MC34063ADR can be used to build boost, buck, and inverting DC-DC converters.
- What is the recommended decoupling capacitor for the input voltage?
A 1000-µF decoupling capacitor is recommended for the input voltage.
- Does the MC34063ADR require minimal external components?
Yes, the MC34063ADR requires minimal external components to build DC-DC converters.
- What is the typical supply current of the MC34063ADR?
The typical supply current is up to 4 mA.
