LT1375IN8#PBF

Overview

The LT1375IN8#PBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc. It integrates a 1.5A switch, oscillator, control circuitry, and logic within a single die. The device operates at a fixed 500kHz switching frequency, which enables the use of smaller external components compared to lower-frequency regulators. It accepts an input voltage range from 5V to 25V and provides a fixed 5V output. The component supports through-hole mounting in an 8-pin PDIP package and functions as a step-down DC-DC converter.

Feature Summary

• Integrates a high-current internal switch with complete oscillator and control logic for simplified design
• Utilizes a high 500kHz switching frequency to significantly reduce the physical size of required external passive components
• Provides a fixed regulated output voltage configuration for stable power delivery

Applications

• General-purpose DC-DC step-down conversion circuits
• Power supply stages requiring compact footprint due to high switching frequency
• Embedded systems utilizing through-hole packaging requirements

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the manufacturer is Analog Devices Inc. or its predecessor Linear Technology. Ensure the package type matches the required 8-pin DIP form factor for your PCB layout. Cross-reference the part number against official distributor catalogs to confirm current availability status and authenticity before finalizing procurement plans.

Selection Notes

Select this component when a fixed 5V output is required from an input range up to 25V. The 500kHz frequency makes it suitable for designs where space constraints limit inductor and capacitor sizes. Consider the 1.5A switch capability for moderate load applications. Verify that the through-hole PDIP package aligns with the assembly process and board density requirements of the target system.

Part Context

This part belongs to the LT1375 family of switching regulators. It is distinct from the LT1376, which offers additional topology flexibility including SEPIC capabilities. The LT1375 focuses specifically on efficient buck conversion with integrated high-frequency operation. It serves as a robust solution for standard step-down voltage regulation tasks in industrial and commercial electronics.

Replacement Considerations

LT1375CN8-5#PBF is listed as a direct substitute option.