LT1373IS8#TRPBF

Overview

The LT1373IS8#TRPBF is a high-frequency current mode switching regulator manufactured by Analog Devices Inc. It operates at a fixed switching frequency of 250 kHz and delivers an output current of 1.5 A. The device features a low quiescent supply current of 1 mA, enabling efficient power management in compact designs. It supports multiple standard switching topologies including step-up, step-down, and inverting configurations. The component is housed in an 8-lead SOIC package and is rated for operation within a temperature range of -40°C to +125°C.

Feature Summary

• Supports versatile switching configurations including buck, boost, Cuk, flyback, and inverting topologies
• Utilizes current mode control architecture for stable performance across varying load conditions
• Integrates low supply current consumption to maximize efficiency in battery-powered applications

Applications

• Portable instrumentation requiring efficient voltage conversion
• Battery-operated systems needing extended runtime through low quiescent current
• Industrial control circuits utilizing isolated or non-isolated DC-DC conversion

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the IS8 variant corresponds to the industrial temperature grade and SOIC package style required for your design. Ensure compatibility with the intended switching topology before procurement, as the device supports multiple configurations but requires external passive components for each.

Selection Notes

Select this regulator when a fixed 250 kHz frequency is acceptable for EMI considerations. The 1.5 A output capability suits moderate power loads without requiring external pass transistors. Consider the SOIC-8 footprint constraints during PCB layout. This part is suitable for designs prioritizing simplicity and cost-effectiveness over adjustable frequency options found in other regulators.

Part Context

The LT1373 belongs to a family of high-frequency switching regulators designed for general-purpose power conversion. The IS8#TRPBF designation specifies the industrial temperature range, SOIC-8 package, and tape-and-reel delivery method. It serves as a complete solution for single-output DC-DC conversion, integrating the controller, oscillator, and driver into a single monolithic IC.

Replacement Considerations

Direct pin-compatible replacements are not explicitly confirmed in public documentation. Designers should evaluate alternative Analog Devices regulators such as the LT1376 or LT1673 series for similar functionality, ensuring that switching frequency, current limits, and package dimensions match the existing board layout requirements.