Overview
The LT8390IUFD#PBF is a synchronous 4-switch buck-boost DC/DC controller produced by Analog Devices Inc. This controller is designed to regulate output voltage, input or output current from an input voltage that can be above, below, or equal to the output voltage. It utilizes a proprietary peak-buck peak-boost current mode control scheme, allowing for smooth transitions between buck, buck-boost, and boost regions. This device is particularly useful in applications requiring high flexibility and efficiency in power conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4V to 60V | V |
| Switching Frequency | Up to 600kHz | Hz |
| Output Voltage Range | Programmable | V |
| Maximum Output Current | Up to 6.7A (peak) | A |
| Package Type | 28-Lead Plastic QFN (4mm × 5mm) | |
| Operating Temperature Range | –40°C to 125°C | °C |
| Absolute Maximum Ratings (VIN, EN/UVLO, VOUT) | 60V | V |
| Spread Spectrum Capability | Yes |
Key Features
- Current Mode Control: Utilizes a proprietary peak-buck peak-boost current mode control scheme for efficient and smooth transitions between buck, buck-boost, and boost regions.
- Spread Spectrum Capability: Reduces EMI by spreading the switching frequency across a range of frequencies.
- Fault Protection Modes: Supports hiccup, latch-off, and keep-running modes during output short-circuit conditions, configurable via a single resistor.
- High Efficiency: Optimized for high efficiency across a wide range of input and output voltages.
- Flexible Configuration: Allows for regulation of output voltage, input or output current, making it versatile for various applications.
Applications
- Automotive Systems: Suitable for automotive applications due to its robust design and wide operating temperature range. Versions with controlled manufacturing for automotive reliability are available.
- Industrial Power Supplies: Ideal for industrial power supplies requiring high efficiency and flexibility in voltage and current regulation.
- Renewable Energy Systems: Can be used in solar and wind power systems to manage and regulate power efficiently.
- Battery Management Systems: Useful in battery charging and discharging applications where input and output voltages may vary.
Q & A
- What is the input voltage range of the LT8390IUFD#PBF?
The input voltage range is from 4V to 60V.
- What is the maximum switching frequency of the LT8390IUFD#PBF?
The maximum switching frequency is up to 600kHz.
- What types of fault protection modes does the LT8390IUFD#PBF support?
The device supports hiccup, latch-off, and keep-running modes during output short-circuit conditions.
- What is the operating temperature range of the LT8390IUFD#PBF?
The operating temperature range is from –40°C to 125°C.
- Does the LT8390IUFD#PBF have spread spectrum capability?
Yes, it does have spread spectrum capability to reduce EMI.
- What is the maximum peak output current of the LT8390IUFD#PBF?
The maximum peak output current is up to 6.7A.
- What package type is the LT8390IUFD#PBF available in?
The device is available in a 28-Lead Plastic QFN (4mm × 5mm) package.
- Is the LT8390IUFD#PBF suitable for automotive applications?
Yes, it is suitable for automotive applications and versions with controlled manufacturing for automotive reliability are available.
- How does the LT8390IUFD#PBF regulate output voltage and current?
The device regulates output voltage and current using a proprietary peak-buck peak-boost current mode control scheme.
- What are some common applications of the LT8390IUFD#PBF?
Common applications include automotive systems, industrial power supplies, renewable energy systems, and battery management systems.
