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The LT8391EUFD is a synchronous 4-switch buck-boost LED controller that can adjust the LED current according to the input voltage which is higher, lower or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme supports adjustable and synchronous fixed-frequency operation from 150kHz to 650kHz, or supports an internal ±15% triangular spread spectrum operation mode that can reduce EMI.

The LT8391EUFD features 4V to 60V input and 0V to 60V output, and supports seamless low-noise conversion between operating areas. The LT8391EUFD is highly suitable for LED driver and battery charging applications in automotive, industrial, and battery-powered systems.

Main features

The four-switch single-inductor architecture allows VIN to be higher, lower or equal to VOUT

Synchronous switch: Efficiency up to 98%

Proprietary peak step-down and peak step-up current modes

Wide VIN range: 4V to 60V

Wide VOUT range: 0V to 60V (51V LED)

±3% LED current accuracy

2000:1 external and 128:1 internal PWM dimming

High-voltage side PMOS PWM switch driver

Integrated bootstrap diode

There is no MOSFET refresh noise during voltage reduction or boost

Adjustable and synchronizable frequency range: 150kHz to 650kHz

The flicker-free extended spectrum is used to achieve low EMI

Open-circuit and short-circuit LED protection with fault reporting function

Adopting a 28-pin QFN package with exposed padding (4mm x 5mm)

Passed the AEC-Q100 automotive application certification

Typical applications

Automobile headlamps/running lights

High-power LED lighting

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.