LT8603IUJ#TRPBF

Overview

The LT8603IUJ#TRPBF is a quad-output power management IC from Analog Devices, housed in a 40-QFN (6x6) package. It integrates two high-input voltage synchronous buck regulators, one low-input voltage synchronous buck regulator, and a boost controller. The high-voltage channels support an input range of 3 V to 42 V with output currents up to 2.5 A and 1.5 A respectively. The low-voltage channel accepts 2.6 V to 5.5 V inputs with up to 1.8 A output current. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Combines multiple regulator topologies for flexible multi-rail power distribution
• Enables precise regulation even when battery voltage drops significantly below output levels
• Includes robust protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown

Applications

• Automotive stop-start systems and cold crank ride-through applications
• Industrial control systems requiring wide input voltage ranges
• General-purpose power supply designs needing multiple regulated outputs

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging configuration. Confirm that the 40-QFN footprint matches your PCB layout requirements. Ensure component authenticity through authorized distributors. Check for any recent product change notifications regarding material or process updates. Validate that the operating temperature range meets your environmental specifications.

Selection Notes

Select this component when a single IC must provide four distinct regulated rails from varying input conditions. It is suitable for designs where input voltage may sag significantly below required output voltages. Consider the 40-QFN package size constraints during mechanical design. Evaluate the need for selectable Burst Mode operation if ultra-low quiescent current is required under light loads.

Part Context

This part belongs to the LT8603 series of specialized PMICs designed for complex power architectures. It consolidates functions typically requiring multiple discrete controllers into a single compact solution. The series targets applications demanding high reliability and flexibility in harsh electrical environments, particularly within automotive and industrial sectors.

Replacement Considerations

Direct substitutes include other LT8603 variants with different package options such as LT8603EUJ#PBF or LT8603IUJ#PBF. Verify pin compatibility and thermal performance when switching between tube and reel packages. Ensure that alternative versions maintain the same electrical characteristics and regulatory approvals.