LT1375CN8-5#PBF

Overview

The LT1375CN8-5#PBF is a monolithic buck mode switching regulator manufactured by Analog Devices. It integrates a 1.5A switch, oscillator, and control logic into an 8-pin PDIP package. The device operates with a fixed switching frequency of 500kHz to minimize external component size. It accepts an input voltage range from 5V to 25V and provides a fixed 5V output. The maximum output current is rated at 1.2A, with a quiescent current of 2.5mA. It supports shutdown functionality and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a 1.5A power switch and all necessary control circuitry on a single die
• Utilizes a high 500kHz switching frequency to significantly reduce the physical size of external passive components
• Includes built-in shutdown capability for enhanced power management efficiency

Applications

• Battery-powered systems requiring efficient step-down conversion
• Post-regulation stages in distributed power architectures
• General-purpose DC-to-DC conversion in industrial equipment

Procurement Notes

Verify the specific suffix CN8 indicates the through-hole PDIP-8 package variant when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation prior to integration. Ensure the fixed 5V output specification aligns with the target load requirements. Cross-reference the part number against the latest datasheet revision history to confirm pinout and electrical characteristics remain unchanged.

Selection Notes

Select this component when a robust through-hole solution is required for moderate current applications up to 1.2A. The fixed 500kHz frequency offers a balance between efficiency and component footprint. Consider thermal dissipation capabilities inherent to the PDIP-8 package for high ambient temperature environments. Verify that the 5V fixed output meets system voltage rails without requiring external feedback adjustments.

Part Context

This part belongs to the LT1375 family of monolithic buck regulators. It shares core topology and performance metrics with surface-mount variants like the IS8 series but utilizes a dual inline package for ease of prototyping and manual assembly. The family is characterized by high efficiency and minimal external component count.

Replacement Considerations

LT1376CN8-5#PBF serves as a direct substitute offering compatible pinouts and similar electrical specifications within the same package style.