Overview
The MC34063EBN is a monolithic control circuit from STMicroelectronics, designed for DC-DC voltage conversion. It is part of the MC34063A/E series, which provides the main functions necessary for step-down, step-up, and voltage-inverting applications. The device includes an internal temperature-compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit, driver, and a high current output switch. The output voltage can be adjusted using two external resistors with a 2% reference accuracy. This component is known for its minimal requirement of external components, making it versatile and efficient for various power management needs.
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 |
| Active Current Limiting | Yes | |
| Package Type | DIP-8 | |
| Operating Temperature Range | -40°C to 125°C | °C |
| Power Dissipation at TA = 25°C | 1.25 W (DIP-8) | W |
| Thermal Resistance Junction-Ambient | 100 °C/W (DIP-8) | °C/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
- Minimal external components required
- Designed for step-down, step-up, and voltage-inverting applications
Applications
The MC34063EBN is suitable for a variety of 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 MC34063EBN used for?
The MC34063EBN is used for DC-DC voltage conversion, including step-down, step-up, and voltage-inverting applications.
- What is the output switch current of the MC34063EBN?
The output switch current of the MC34063EBN is in excess of 1.5 A.
- What is the reference accuracy of the MC34063EBN?
The reference accuracy of the MC34063EBN is 2%.
- What is the operating voltage range of the MC34063EBN?
The MC34063EBN operates from 3 V to 40 V.
- What is the maximum frequency operation of the MC34063EBN?
The MC34063EBN can operate up to 100 kHz.
- Does the MC34063EBN have active current limiting?
Yes, the MC34063EBN has active current limiting.
- What package types are available for the MC34063EBN?
The MC34063EBN is available in DIP-8 and SO-8 packages.
- What is the operating temperature range of the MC34063EBN?
The operating temperature range of the MC34063EBN is -40°C to 125°C.
- How is the output voltage adjusted in the MC34063EBN?
The output voltage is adjustable through two external resistors with a 2% reference accuracy.
- What are some common applications of the MC34063EBN?
