The LT3748EMS#PBF is a high voltage synchronous current mode step-up converter manufactured by Analog Devices. It is designed to efficiently drive numerous white LEDs in series or parallel configuration, making it ideal for backlighting applications in automotive, industrial, and avionic systems.
Here are some key features of the LT3748EMS#PBF:
1. High Voltage Capability: The LT3748EMS#PBF can operate from an input voltage range of 3V to 60V, allowing it to handle a wide variety of power supply sources.
2. Synchronous Rectification: It utilizes a synchronous rectification technique that provides high efficiency and reduces power losses during operation.
3. Wide Dimming Ratio: The converter can achieve a wide dimming ratio of up to 3000:1, enabling precise control of the LED brightness for different lighting requirements.
4. Adjustable Output Voltage: It provides a programmable output voltage that can be adjusted through an external resistor, allowing for flexibility in the LED configuration.
5. LED Open Circuit Detection: The LT3748EMS#PBF incorporates a built-in protection mechanism that detects open-circuit faults in the LED strings and shuts down the converter to prevent further damage.
6. Programmable Soft-Start: It includes a user-configurable soft-start feature, which allows gradual ramp-up of the output voltage during startup to prevent excessive inrush current
