Overview
The LT8582EDKD#TRPBF, produced by Analog Devices Inc., is a dual independent channel PWM DC/DC converter. This device is designed to provide high efficiency and robust fault protection, making it suitable for a variety of power management applications. It features two independent channels, each capable of operating in boost, inverting, or SEPIC configurations. The LT8582 includes a power good pin and built-in fault protection mechanisms to guard against input overvoltage and undervoltage conditions, as well as output short protection and frequency foldback.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|
| Input Voltage Range | 2.5 | - | 22 | V |
| Maximum Transient Input Voltage | - | - | 40 | V |
| Output Current per Channel | - | - | 3A (Combined 4.2A) | A |
| Switching Frequency | - | - | Up to 2.5MHz | Hz |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | 24-Pin 7mm × 4mm DFN | - |
Key Features
- Dual independent channels with boost, inverting, and SEPIC configurations.
- Power good pin for event-based sequencing.
- Built-in fault protection including input overvoltage and undervoltage lockout, output short protection, and frequency foldback.
- Soft-start and master/slave switch design (1.7A/1.3A).
- Exposed pad for improved thermal performance.
- High switching frequency up to 2.5MHz.
Applications
- Local power supply systems.
- Vacuum fluorescent display (VFD) bias supplies.
- TFT-LCD bias supplies.
- Automotive engine control unit (ECU) power supplies.
Q & A
- What is the input voltage range of the LT8582?
The input voltage range of the LT8582 is from 2.5V to 22V, with a maximum transient voltage of 40V.
- What are the output current capabilities of the LT8582?
Each channel can deliver up to 3A, with a combined output current of up to 4.2A.
- What is the switching frequency of the LT8582?
The switching frequency of the LT8582 can be up to 2.5MHz.
- What kind of fault protection does the LT8582 offer?
The LT8582 offers input overvoltage and undervoltage lockout, output short protection, and frequency foldback.
- What is the operating temperature range of the LT8582?
The operating temperature range of the LT8582 is from -40°C to 125°C.
- What package type is the LT8582 available in?
The LT8582 is available in a 24-pin 7mm × 4mm DFN package.
- Does the LT8582 have a power good pin?
Yes, the LT8582 includes a power good pin for event-based sequencing.
- What are some common applications of the LT8582?
Common applications include local power supply systems, VFD bias supplies, TFT-LCD bias supplies, and automotive ECU power supplies.
- Does the LT8582 support soft-start?
Yes, the LT8582 includes a soft-start feature to manage startup conditions.
- How does the LT8582 handle output short protection?
The LT8582 disables the power switches and turns off the power path to protect components during an output short event.
