LT8602ILXE#PBF

Overview

The LT8602ILXE#PBF is a quad-channel, monolithic synchronous step-down switching regulator manufactured by Analog Devices. It integrates four independent buck converters synchronized to a single programmable oscillator operating between 250 kHz and 2.2 MHz. The device supports an input voltage range of 3 V to 42 V for high-voltage channels and 2.6 V to 5.5 V for low-voltage channels. Output currents reach up to 1.5 A on OUT1, 2.5 A on OUT2, and 1.8 A on the low-voltage outputs. Quiescent current is specified at 70 µA, with micropower Burst Mode operation reducing it to 30 µA. The component operates within a junction temperature range of -40°C to +125°C and is housed in a 48-lead LQFP package.

Feature Summary

• Integrates four synchronized synchronous buck regulators with internal power switches for high efficiency.
• Supports configurable micropower Burst Mode or pulse-skipping operation for enhanced light-load efficiency.
• Features a programmable power-on reset generator and adjustable switching frequency synchronization.

Applications

• Industrial systems requiring multiple isolated or non-isolated voltage rails from a single source
• Automotive electronics utilizing wide input voltage ranges
• Embedded controllers needing synchronized multi-phase power distribution

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm thermal grade and packaging configuration. Ensure compatibility with the target PCB footprint for the 48-lead LQFP package. Confirm that the selected variant meets the required ambient temperature specifications for the intended application environment before finalizing procurement.

Selection Notes

Select this component when a design requires four independent regulated outputs derived from a common bus. The integrated synchronization capability allows for noise reduction through phase shifting or external clock alignment. Consider the thermal performance of the 48-lead LQFP package relative to the total output current load and ambient conditions.

Part Context

This part belongs to the LT8602 family of quad-channel regulators designed for space-constrained applications. It consolidates multiple discrete buck converter solutions into a single monolithic IC, reducing board area and component count while maintaining high performance across varying load conditions.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics carefully when considering similar quad-channel regulators from other manufacturers.

FAQ

How are the four channels synchronized?

All four regulators are synchronized to a single internal oscillator, which can be adjusted between 250 kHz and 2.2 MHz. Channels 1 and 3 operate 180 degrees out of phase with channels 2 and 4.

What is the difference between the high-voltage and low-voltage channels?

The high-voltage channels (OUT1 and OUT2) support input voltages up to 42 V, while the low-voltage channels operate from an input range of 2.6 V to 5.5 V.