Overview
The MC34063ABN is a monolithic control circuit designed by STMicroelectronics for DC-DC voltage conversion. This device is part of the MC34063A/E series and is integrated with essential components for DC-DC conversion, including an internal temperature-compensated reference, comparator, duty cycle controlled oscillator, active current limit circuit, driver, and high current output switch. The output voltage can be adjusted using two external resistors with a 2% reference accuracy. The MC34063ABN is suitable for step-down, step-up, and voltage-inverting applications, requiring a minimal number of external components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Switch Current | In excess of 1.5 A | A |
| Reference Accuracy | 2% | % |
| Quiescent Current | 2.5 mA (typ.) | mA |
| Operating Voltage Range | 3 V to 40 V | V |
| Frequency Operation | Up to 100 kHz | kHz |
| Operating Ambient Temperature Range | -40°C to 85°C (AB series) | °C |
| Package Types | DIP-8, SO-8 | |
| RoHS Compliance | Ecopack2 |
Key Features
- Output switch current in excess of 1.5 A
- 2% reference accuracy
- Low quiescent current: 2.5 mA (typ.)
- Operating from 3 V to 40 V
- Frequency operation up to 100 kHz
- Active current limiting
- Adjustable output voltage through two external resistors
- Minimal external components required for operation
Applications
- Step-down (buck) converters
- Step-up (boost) converters
- Voltage-inverting converters
- Dual output voltage configurations
- Higher output power and higher input voltage applications
Q & A
- What is the MC34063ABN used for?
The MC34063ABN is used for DC-DC voltage conversion, including step-down, step-up, and voltage-inverting applications.
- What is the output switch current of the MC34063ABN?
The output switch current of the MC34063ABN is in excess of 1.5 A.
- What is the reference accuracy of the MC34063ABN?
The reference accuracy of the MC34063ABN is 2%.
- What is the operating voltage range of the MC34063ABN?
The MC34063ABN operates from 3 V to 40 V.
- What are the package types available for the MC34063ABN?
The MC34063ABN is available in DIP-8 and SO-8 packages.
- Is the MC34063ABN RoHS compliant?
Yes, the MC34063ABN is RoHS compliant with an Ecopack2 rating.
- What is the typical quiescent current of the MC34063ABN?
The typical quiescent current of the MC34063ABN is 2.5 mA.
- What is the maximum operating frequency of the MC34063ABN?
The MC34063ABN can operate up to 100 kHz.
- How is the output voltage adjusted in the MC34063ABN?
The output voltage is adjustable through two external resistors with a 2% reference accuracy.
- What are some common applications of the MC34063ABN?
Common applications include step-down, step-up, and voltage-inverting converters, as well as dual output voltage configurations and higher output power applications.
