LT3743IFE#PBF

LED Driver IC Overview

The LT3743IFE#PBF is a high-efficiency synchronous buck LED driver controller from Analog Devices, designed for high-current applications. It operates within an input voltage range of 6 V to 36 V and supports adjustable output voltages up to 34 V. The device delivers a maximum output current of 20 A through a single channel. Operating frequencies are configurable between 200 kHz and 1 MHz. It features PWM dimming capabilities and open LED protection. The component is housed in a TSSOP-28 package and functions reliably across a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Synchronous buck topology for high efficiency
• Integrated PWM dimming control
• Open LED protection circuitry

LED Driver IC Applications

• LED lighting systems
• Display backlights
• Indicator circuits

LED Driver IC Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to ensure correct packaging and variant selection. Confirm that the TSSOP-28 package matches your PCB footprint requirements. Check current availability status as supply may be restricted or subject to allocation. Ensure the selected component meets all environmental and RoHS compliance standards required for your final assembly process.

LED Driver IC Selection Notes

Select this controller when high output current capability near 20 A is required for LED strings. Consider the wide input voltage range suitable for various power sources. Evaluate the need for programmable switching frequency to optimize external component size and EMI performance. Verify thermal management solutions given the high current density and operating temperature limits inherent to this class of drivers.

LED Driver IC Part Context

This part belongs to the LT3743 series of DC/DC controllers specifically engineered for driving high-current LEDs. It utilizes average current mode control to maintain precise regulation. The synchronous design reduces external component count and improves overall system efficiency compared to non-synchronous alternatives. It is categorized under LED lighting driver ICs within the broader power management portfolio.

LED Driver IC Replacement Considerations

Consult official substitution guides for compatible parts within the same family or alternative topologies. Verify pinout compatibility and electrical parameter equivalence before replacing. Generic substitutes may not match the specific three-state control or protection features documented for this model.