Overview
The MC34063ABD, produced by STMicroelectronics, is a monolithic control circuit designed for DC-DC voltage conversion. This device is part of the MC34063A/E series, which integrates the main functions necessary for DC-DC converters. It includes an internal temperature-compensated reference, a comparator, a duty cycle-controlled oscillator with an active current limit circuit, a driver, and a high current output switch. The output voltage is adjustable using two external resistors, offering a 2% reference accuracy. The MC34063ABD 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 | 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 |
| Active Current Limiting | Yes | |
| Package Types | SO-8, DIP-8 | |
| Operating Junction Temperature | -40°C to 85°C (AB series) | °C |
| Storage Temperature Range | -40°C to 150°C | °C |
| Power Dissipation at TA = 25°C | 1.25 W (DIP-8), 0.625 W (SO-8) | W |
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
- Minimum number of external components required
- ESD protection (Human Body Model 4000 V, Machine Model 400 V)
Applications
The MC34063ABD is designed for various DC-DC conversion applications, including:
- 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 maximum output switch current of the MC34063ABD?
The maximum output switch current is in excess of 1.5 A.
- What is the reference accuracy of the MC34063ABD?
The reference accuracy is 2%.
- What is the operating voltage range of the MC34063ABD?
The operating voltage range is from 3 V to 40 V.
- What are the package types available for the MC34063ABD?
The package types available are SO-8 and DIP-8.
- What are the typical applications of the MC34063ABD?
The typical applications include step-down, step-up, and voltage-inverting converters, as well as dual output voltage configurations.
- What is the maximum operating junction temperature for the MC34063ABD?
The maximum operating junction temperature is 150°C, and the operating ambient temperature range for the AB series is -40°C to 85°C.
- Does the MC34063ABD have ESD protection?
Yes, the MC34063ABD has ESD protection, exceeding Human Body Model 4000 V and Machine Model 400 V tests.
- What is the quiescent current of the MC34063ABD?
The quiescent current is typically 2.5 mA.
- How is the output voltage adjusted in the MC34063ABD?
The output voltage is adjustable through two external resistors with a 2% reference accuracy.
- What is the maximum power dissipation at TA = 25°C for the MC34063ABD?
The maximum power dissipation is 1.25 W for DIP-8 and 0.625 W for SO-8 packages.
- Is the MC34063ABD RoHS compliant?
Yes, the MC34063ABD is RoHS compliant, with an Ecopack2 grade.
