LT3663HMS8E-5#PBF

Overview

The LT3663HMS8E-5#PBF is a current mode 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 programmable output current limit that accurately controls system power dissipation, allowing for reduced size of power path components. It utilizes a buck topology and includes a shutdown function. The component is housed in an 8-pin MSOP package with exposed pad and supports extended temperature operation from -40°C to +125°C.

Feature Summary

• Current mode control architecture with programmable output current limit
• Integrated shutdown capability for power management
• Extended temperature grade support for harsh environments

Applications

• Industrial power systems requiring isolated auxiliary rails
• Automotive electronics within specified voltage ranges
• Distributed power architectures using buck conversion

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm the manufacturer part number matches exactly to ensure correct thermal and electrical specifications. Check RoHS compliance status as indicated in official documentation. Ensure the ordering information aligns with the required package type and temperature grade for the intended application environment.

Selection Notes

Select this component when a fixed 5 V output is required from a 7.5 V to 36 V input source. The programmable current limit allows customization of protection thresholds to optimize external component sizing. Consider the MSOP-8 package constraints for PCB layout and thermal dissipation requirements. Verify that the 1.2 A output current meets the load demands without exceeding the device's thermal limits under worst-case conditions.

Part Context

This part belongs to the LT3663 family of high efficiency, high voltage synchronous buck converters. The H suffix denotes the extended temperature grade variant. The MS8E package identifies the 8-lead MSOP form factor with an exposed thermal pad. The E5 suffix specifies the fixed 5 V output voltage option within the series.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters before replacing. Generic equivalents may not match the programmable current limit or thermal performance characteristics.