LT1506CR-SYNC#TRPBF

Overview

The LT1506CR-SYNC#TRPBF is a monolithic synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 15V and provides a fixed 3.3V output at up to 4.5A. The device integrates a 4.5A power switch, oscillator, and control logic, functioning at a 500kHz frequency. Packaged in an 8-pin DDPAK with thermal tab, it is optimized for lower input voltage applications compared to the LT1374.

Feature Summary

• Integrates a high-current 4.5A synchronous power switch on the die
• Optimized for low input voltage operation ranging from 4V to 15V
• Includes complete oscillator, control, and logic circuitry

Applications

• 5V to 3.3V step-down conversion circuits
• Low input voltage DC-DC regulation systems

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging with lead-free compliance. Confirm the CR designation corresponds to the commercial temperature grade. Ensure the SYNC suffix denotes the synchronous rectification variant. Cross-reference the manufacturer datasheet for exact pinout and thermal pad specifications before integration.

Selection Notes

Select this component when input voltages fall between 4V and 15V and a fixed 3.3V output is required. It serves as a functional alternative to the LT1374 but is specifically designed for lower input ranges. Consider the 500kHz switching frequency and 4.5A current capability against system efficiency and thermal constraints.

Part Context

This part belongs to the LT1506 family of synchronous buck regulators. It shares functional similarities with the LT1374 but differs in input voltage optimization. The device is classified under switching voltage regulators and PMICs, utilizing a D2PAK-style package for surface mount assembly.

Replacement Considerations

The LT1374 is functionally identical but supports a higher input range of 5.5V to 25V. Verify that the lower 4V minimum input of the LT1506 meets system requirements if substituting.