LT8391IFE#TRPBF

LED Driver IC Overview

The LT8391IFE#TRPBF is a synchronous four-switch buck-boost LED controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V and supports output currents up to 10A. The device features a switching frequency range from 600kHz to 2MHz, utilizing proprietary peak buck-peak boost current mode control. It is housed in a 28-lead TSSOP-EP package and supports analog and PWM dimming for precise LED current regulation.

LED Driver IC Feature Summary

• Synchronous four-switch topology enables stable operation when input voltage is above, below, or equal to the output voltage.
• Proprietary peak buck-peak boost current mode control ensures accurate LED current regulation across wide dynamic ranges.
• Integrated spread spectrum modulation reduces electromagnetic interference (EMI) noise peaks during operation.

LED Driver IC Applications

• LED lighting driver designs requiring wide input voltage flexibility
• Display backlighting systems needing high-efficiency power conversion
• Industrial indicator circuits demanding robust buck-boost performance

LED Driver IC Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration when ordering. Confirm that the component meets RoHS compliance standards as specified in the official datasheet. Ensure the procurement channel provides valid traceability documentation for the Analog Devices Inc. manufacturer part number. Cross-reference the date code against current production status to avoid obsolete stock issues.

LED Driver IC Selection Notes

Select this component for applications requiring a single-channel LED driver capable of handling significant voltage differentials between source and load. The choice is appropriate where space constraints favor a compact 28-lead TSSOP-EP package over larger alternatives. Consider the 600kHz to 2MHz frequency range for optimizing external passive component sizes while maintaining efficiency targets.

LED Driver IC Part Context

This part belongs to the LT8391 family of synchronous buck-boost controllers designed specifically for LED illumination. It serves as a core control IC within larger power stages, managing the switching elements to maintain constant current. The device complements evaluation boards like the DC2345A, which demonstrates its capabilities in practical circuit configurations for engineering validation.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Engineers should consult the official Analog Devices Inc. replacement guide or contact technical support directly for validated cross-reference data before substituting this component in existing designs.