LT8608IDC#TRPBF

Overview

The LT8608IDC#TRPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It features an integrated 42V, 1.5A power switch and includes a dedicated 2.5A Quick Charge output stage. The device operates with a fixed 1.2MHz switching frequency to minimize external component size while maintaining high efficiency. It supports input voltages from 3.5V to 42V and provides adjustable output voltages down to 0.8V. Key control features include cycle-by-cycle current limit, thermal shutdown, and soft-start functionality.

Feature Summary

• Integrates a 42V, 1.5A synchronous power switch for compact design
• Includes a dedicated 2.5A Quick Charge output stage for fast charging applications
• Operates at a fixed 1.2MHz switching frequency to reduce passive component requirements
• Provides comprehensive protection via cycle-by-cycle current limiting and thermal shutdown

Applications

• Portable consumer electronics requiring efficient power management
• Industrial equipment utilizing distributed power architectures
• Battery-powered devices needing extended runtime through high efficiency
• General-purpose point-of-load regulation in compact form factors

Procurement Notes

Verify the exact ordering suffix against the manufacturer's official documentation to ensure compatibility with specific packaging or temperature grade requirements. Confirm that the requested part number matches the intended application voltage and current specifications before procurement. Cross-reference the datasheet revision date to ensure access to the most current electrical characteristics and reliability data.

Selection Notes

Select this component when a single-output buck converter with an additional high-current auxiliary rail is required. The integrated 2.5A stage allows for powering secondary loads without extra components. Ensure the input voltage range aligns with the system supply and that the 1.2MHz frequency fits within EMI constraints. Evaluate thermal performance based on the expected load current and ambient operating conditions.

Part Context

This part belongs to the LT860x family of synchronous step-down regulators designed for high-efficiency power conversion. The family emphasizes small solution sizes through high-frequency operation and integrated switches. The LT8608 specifically differentiates itself by adding a dedicated high-current output stage alongside the main regulated rail, catering to multi-rail systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.