LT1373IN8#PBF

Overview

The LT1373IN8#PBF is a high-efficiency switching regulator from Analog Devices, operating at a fixed 250kHz frequency. It supports multiple topologies including Buck, Boost, Cuk, Flyback, and Inverting configurations. The device accepts an input voltage range of 2.7V to 30V and delivers a switch current of 1.5A. It features adjustable output voltage starting from 1.245V with a single output channel. Quiescent current is specified at 1mA, and it includes shutdown functionality. The component operates within a temperature range of 0°C to +125°C and is housed in an 8-PDIP package.

Feature Summary

• Supports versatile DC-DC conversion topologies such as Buck, Boost, Cuk, Flyback, and Inverting circuits.
• Integrates a 1.5A internal switch for efficient power handling across wide input ranges.
• Features low supply current consumption with dedicated shutdown control for power management.

Applications

• Battery-powered portable equipment requiring extended runtime
• Industrial control systems utilizing isolated or non-isolated DC-DC conversion
• Automotive electronics operating within standard voltage constraints

Procurement Notes

Verify the specific suffix 'IN8' against official Analog Devices documentation to confirm pinout compatibility and thermal characteristics. Ensure the source document explicitly lists this part number variant rather than generic family members. Confirm RoHS compliance status through the manufacturer's material declaration. Cross-reference the datasheet revision date to validate parameter accuracy before integration into design specifications.

Selection Notes

Select this component when designing circuits requiring flexible topology support beyond simple step-down regulation. The 250kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 1.5A switch current limit for load requirements. Evaluate the PDIP-8 package for through-hole assembly needs. Verify that the 30V maximum input voltage aligns with the system's power source capabilities.

Part Context

This part belongs to the LT1373 series of switching regulators manufactured by Analog Devices (formerly Linear Technology). It shares core electrical characteristics with variants like the LT1373CN8#PBF and LT1373HVCN8#PBF, differing primarily in package type and potentially voltage ratings. The series is designed for general-purpose power conversion applications requiring high efficiency and low quiescent current.

Replacement Considerations

LT1373CN8#PBF

FAQ

What switching frequencies does the LT1373 support?

The LT1373 operates at a fixed switching frequency of 250kHz.

Can the LT1373 be used for isolated power supplies?

Yes, the device supports Flyback topology, which is suitable for creating isolated DC-DC conversions.