LT1507IS8-3.3#TRPBF

Overview

The LT1507IS8-3.3#TRPBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc., designed for efficient DC-DC conversion in surface-mount applications. It operates with a fixed output voltage of 3.3 V and supports an output current of 1.5 A. The device utilizes a buck topology with a standard switching frequency of 500 kHz, enabling the use of compact external components. It accepts an input voltage range from 4 V to 15 V and features a shutdown function for power management. The component is housed in an 8-pin SOIC package and is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-speed switching controller with a built-in power switch for efficient step-down regulation.
• Includes a dedicated shutdown pin to minimize quiescent current consumption during standby modes.
• Provides constant-frequency pulse-width modulation control to maintain stable output under varying load conditions.

Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Industrial systems utilizing distributed power architectures
• Embedded controllers needing isolated or non-isolated step-down conversion

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the IS8 variant meets the extended industrial temperature specifications necessary for the intended operating environment. Ensure compatibility with the target PCB footprint and soldering thermal profiles before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.3 V output at 1.5 A is required from a 4 V to 15 V input source. Consider the 500 kHz switching frequency for balancing component size and efficiency. Evaluate the SOIC-8 package constraints against available board space. Compare against adjustable variants if flexible output voltages are needed instead of a fixed rail.

Part Context

This part belongs to the LT1507 series of monolithic step-down switching regulators. The series is characterized by its ability to drive significant loads while maintaining high efficiency through integrated power switching. The IS8 designation indicates the industrial temperature grade and SOIC-8 package configuration, distinguishing it from commercial grade or alternative package options within the same functional family.

Replacement Considerations

LT1507IS8#TRPBF