LT3763EFE#TRPBF

LED Driver IC Overview

The LT3763EFE#TRPBF is a fixed frequency, synchronous step-down DC/DC controller designed for high-current LED driving and battery charging applications. It accurately regulates output currents up to 20A using average current mode control. The device supports an input voltage range of 6V to 60V and provides an adjustable output voltage from 0V to 55V. Operating frequencies are selectable between 200kHz and 1MHz. It features a low quiescent current of 1.7mA and operates within a junction temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Synchronous buck topology with integrated high-side and low-side MOSFET drivers
• Average current mode control for precise inductor current regulation across wide output voltage ranges
• Programmable switching frequency from 200kHz to 1MHz to optimize external component size
• Supports PWM dimming for LED brightness control

LED Driver IC Applications

• High-power LED lighting systems requiring constant current regulation
• SLA (Sealed Lead Acid) battery chargers
• General purpose high-current step-down power supplies
• Industrial power management modules

LED Driver IC Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the specific package variant matches the required surface-mount footprint. Ensure the supplier source is authorized to guarantee component authenticity. Check RoHS compliance status if restricted substances are a concern for the final assembly. Validate the operating temperature range against the environmental conditions of the target application.

LED Driver IC Selection Notes

Select this controller when high output current capability above 20A is not required but precision regulation is critical. Consider the synchronous design for improved efficiency compared to non-synchronous alternatives. Evaluate the input voltage range to ensure compatibility with the system power source. Assess thermal requirements based on the TSSOP-EP-28 package thermal performance. Compare switching frequency options to balance EMI constraints against passive component size.

LED Driver IC Part Context

The LT3763 belongs to Analog Devices' family of high-voltage synchronous buck controllers. It is functionally similar to the LT3762 but differs in topology; the LT3762 supports boost, buck, and SEPIC configurations, whereas the LT3763 is optimized specifically for step-down operations. Both devices share the TSSOP-28 package form factor but serve distinct circuit topologies.

LED Driver IC Replacement Considerations

The LT3763EFE#PBF is the tube-packaged equivalent of the TRPBF variant. Direct functional substitutes within the same family include other LT3763 variants with different package options. Cross-family replacements require careful evaluation of pinout compatibility and control loop stability.