LT8391IUFD#PBF

LED Driver IC Overview

The LT8391IUFD#PBF is a synchronous four-switch buck-boost LED controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 60V and supports a maximum output current of 10A. The device utilizes a TSSOP-28 package and functions at a switching frequency of 600kHz. Designed for high-efficiency applications, it features a maximum supply current of 2.8mA and operates across a temperature range from -40°C to +150°C.

LED Driver IC Feature Summary

• Synchronous four-switch buck-boost topology regulates LED current regardless of whether the input voltage is above, below, or equal to the output voltage.
• Supports analog pulse-width modulation (PWM) dimming for precise light control.

LED Driver IC Applications

• LED lighting driver ICs
• DC/DC step-down (buck) converter designs
• DC/DC step-up (boost) converter designs

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing components. Confirm that the IUFD designation corresponds to the industrial temperature grade and QFN package variant as listed in official Analog Devices documentation. Ensure compatibility with the required 28-pin footprint during procurement planning.

LED Driver IC Selection Notes

Select this component for applications requiring wide input voltage ranges up to 60V. Consider the 10A output capability and 600kHz switching frequency for thermal management. Verify that the TSSOP-28 or QFN package options align with the PCB layout constraints and assembly requirements for the target design.

LED Driver IC Part Context

This part belongs to the LT8391 series of LED controllers. It is distinct from the LT8390, which serves as a general-purpose switch regulator rather than a dedicated LED driver. The LT8391 family includes various package and temperature grade variations, such as HFE and JFE suffixes, tailored for different manufacturing and environmental needs.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support for direct replacements or cross-references.