LT3663IMS8E-5#PBF

Overview

The LT3663IMS8E-5#PBF is a high-efficiency, synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 7.5 V to 36 V and provides a fixed 5 V output at up to 1.2 A. The device features a 1 MHz switching frequency and includes programmable output current limiting for precise power management. It supports shutdown functionality and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Synchronous buck topology ensures high efficiency across load ranges
• Programmable output current limit controls system power dissipation
• Fixed 1 MHz switching frequency reduces external component size
• Integrated shutdown pin enables low-power standby modes

Applications

• Point-of-load regulation in industrial systems
• Power supply stages for embedded controllers
• Battery-powered equipment requiring efficient step-down conversion
• Automotive electronics operating within specified voltage limits

Procurement Notes

Verify the exact part number suffix #PBF indicates tube packaging when ordering. Confirm that the IMS8E package variant matches your PCB footprint requirements. Ensure the 7.5 V minimum input voltage aligns with your source supply characteristics. Check for automotive qualification if deploying in vehicle environments, as standard versions may differ from EMS8E grades.

Selection Notes

Select this component when a fixed 5 V output is required from a 7.5 V to 36 V input rail. The 1.2 A current capability suits moderate load applications. Consider the MSOP-8 package constraints for thermal performance. Compare against adjustable output variants if voltage flexibility is needed instead of the fixed 5 V configuration.

Part Context

This part belongs to the LT3663 family of synchronous buck converters. It shares core architecture with other output voltage variants like LT3663IMS8E-3.3 or LT3663EMS8E-5. The IMS8E designation specifies the commercial temperature grade and MSOP-8 package type. It serves as a compact solution for DC-DC conversion in space-constrained designs.

Replacement Considerations

LT3663IMS8E-3.3#PBF offers identical electrical characteristics except for a fixed 3.3 V output. LT3663EMS8E-5#PBF provides the same 5 V output but with extended automotive temperature grading. Verify pin compatibility and thermal requirements before substituting.