LT1371IT7#PBF

Overview

The LT1371IT7#PBF is a monolithic high-frequency current mode switching regulator manufactured by Analog Devices Inc. It operates at a switching frequency of 500 kHz and supports an input voltage range up to 30 volts. The device integrates a 3-amp high-efficiency power switch, enabling efficient performance across various standard converter topologies including buck, boost, flyback, forward, negative output, and Cuk configurations. It features an adjustable output voltage starting from 1.25 volts. The component is housed in a TO-220-7 package with formed leads, designed for through-hole mounting applications requiring robust thermal dissipation.

Feature Summary

• Integrates a 3A high-efficiency power switch for direct drive capability
• Supports multiple switching converter topologies including buck, boost, and flyback
• Operates at a fixed 500 kHz switching frequency for compact passive design
• Features current mode control architecture for improved transient response

Applications

• Buck and boost DC-DC conversion circuits
• Flyback and forward isolated power supplies
• Negative voltage generation stages
• Cuk converter implementations

Procurement Notes

Verify the exact datasheet specifications directly from Analog Devices Inc. before integration. Confirm that the TO-220-7 package dimensions match your PCB footprint requirements. Ensure thermal management solutions are adequate for the expected load conditions given the 3A switch rating. Cross-reference the ordering suffix #PBF to confirm lead-free compliance if required by your manufacturing standards.

Selection Notes

Select this component when a single-chip solution for multiple converter topologies is required. The integrated 3A switch eliminates the need for external pass transistors in moderate power applications. The 500 kHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the TO-220 package size constraints during mechanical design. Verify input voltage limits do not exceed 30V under all operating conditions.

Part Context

This part belongs to the LT1371 family of high-frequency switching regulators. It is produced by Analog Devices Inc., formerly Linear Technology. The IT7 suffix indicates the specific temperature grade and packaging variant within the product line. The PBF suffix denotes a lead-free and RoHS-compliant version of the component. This series is designed for general-purpose power supply applications requiring flexibility in topology selection.

Replacement Considerations

Consult official manufacturer documentation for qualified replacement parts. No public substitute part numbers are confirmed in the provided source material. Direct replacements must maintain equivalent switching frequency, current capacity, and pinout compatibility. Verify thermal performance characteristics match the original design requirements.