LT8602IUJ#TRPBF

Overview

The LT8602IUJ#TRPBF is a quad-channel, current-mode monolithic buck switching regulator manufactured by Analog Devices Inc. It features four synchronous step-down regulators synchronized to a single adjustable 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. It includes programmable power-on reset and operates from -40°C to +125°C in a 48-lead QFN package.

Feature Summary

• Integrates four independent synchronous buck converters with a shared oscillator for synchronized operation
• Supports configurable Burst Mode or pulse-skipping modes for optimized light-load efficiency
• Includes a programmable power-on reset generator for system management
• Features internal synchronous power switches to maximize conversion efficiency

Applications

• Industrial systems requiring multiple isolated or non-isolated voltage rails
• Automotive electronics utilizing wide input voltage ranges
• Embedded controllers needing simultaneous supply generation
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal pad specifications. Ensure the ordering part number matches the exact package variant required for your PCB layout. Cross-reference the datasheet revision date to validate electrical characteristics and ensure compliance with current manufacturing standards before finalizing procurement.

Selection Notes

Select this component when a design requires four distinct regulated outputs from a single controller to minimize board space. It is suitable for applications demanding high input voltages up to 42V while maintaining low quiescent current. Consider the 48-lead QFN package constraints and thermal dissipation requirements during the initial schematic capture phase to ensure adequate heat sinking.

Part Context

This part belongs to the LT8602 family of quad-channel synchronous step-down regulators. It shares architectural similarities with the LT8601 triple-output and LT8608 single-output variants within the same product line. All members utilize similar control loops and synchronization techniques but differ in channel count and output current capabilities.

Replacement Considerations

LT8602EUJ#TRPBF

FAQ

What is the frequency range for the internal oscillator?

The internal oscillator frequency is adjustable from 250 kHz to 2.2 MHz.

How are the four channels synchronized?

All four regulators are synchronized to a single internal oscillator using a 2-phase clock configuration where channels 1 and 3 operate 180 degrees out of phase with channels 2 and 4.

Does the device support shutdown functionality?

No, the LT8602 does not include a dedicated shutdown pin; it relies on other control methods for power management.