LT8602EUJ#TRPBF

Overview

The LT8602EUJ#TRPBF is a quad-channel, current-mode monolithic synchronous step-down regulator from Analog Devices. It features four independent buck converters synchronized to a single oscillator with an adjustable frequency range of 250 kHz to 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. It includes programmable power-on reset and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates four independent synchronous buck regulators synchronized to a single internal oscillator
• Supports configurable micropower Burst Mode or pulse-skipping operation for enhanced light-load efficiency
• Includes a programmable power-on reset function for system management
• Utilizes a 2-phase clock architecture to reduce input ripple by operating channels in anti-phase

Applications

• Industrial control systems requiring multiple regulated voltage rails
• Automotive electronics applications with 12V or 24V bus architectures
• Distributed power supply architectures in embedded systems
• Battery-powered devices requiring efficient multi-rail regulation

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape-and-reel packaging configuration required for automated surface-mount assembly processes. Confirm that the EUJ package designation matches the LQFP-48 footprint specifications needed for the target PCB layout. Ensure compatibility with the intended switching frequency settings and thermal management requirements for the operating environment.

Selection Notes

Select this component when a compact solution for generating four distinct output voltages from a single high-voltage source is required. The integrated synchronization allows for noise reduction through phase shifting. Consider the quiescent current specifications if battery life is critical. Verify that the maximum output current ratings of 1.5 A, 2.5 A, and 1.8 A meet the load demands of the specific application rails.

Part Context

This part belongs to the LT8602 series of quad monolithic synchronous step-down regulators. It is designed to replace discrete solutions by integrating four power switches and control loops into a single package. The series is characterized by high efficiency and low external component count, making it suitable for space-constrained designs requiring multiple power domains.

Replacement Considerations

LT8602EUJ#PBF (Tube Packaging)

FAQ

How does the LT8602 manage input ripple?

The device uses a 2-phase clock where channels 1 and 3 operate 180 degrees out of phase with channels 2 and 4, effectively canceling input current ripple.

What is the minimum output voltage capability?

The output voltage can be adjusted down to 0.8 V or 1 V depending on the specific channel configuration and design parameters.