LT1375CS8-5#PBF

Overview

The LT1375CS8-5#PBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc. It operates at a fixed switching frequency of 500 kHz and provides a fixed output voltage of 5 V. The device supports an input voltage range from 5 V to 25 V and delivers an output current of 1.2 A. It features a built-in 1.5 A power switch, oscillator, control circuitry, and logic. The quiescent current is 2.5 mA. It is housed in an 8-pin SOIC package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a 1.5 A power switch with all necessary oscillator, control, and logic circuits on a single die.
• High switching frequency operation allows for considerable reduction in the size of external components.
• Includes shutdown functionality for power management.

Applications

• Battery-powered systems requiring efficient step-down conversion
• Post-regulation of bus voltages
• Simple DC-to-DC conversion circuits

Procurement Notes

Verify the specific suffix and package type against the official datasheet to ensure compatibility with the intended PCB footprint. Confirm that the operating temperature range meets the environmental requirements of the final application. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Ensure that the input voltage does not exceed the maximum rated limit during transient conditions.

Selection Notes

Select this component when a fixed 5 V output is required from an input voltage between 5 V and 25 V. It is suitable for designs where a high switching frequency of 500 kHz is desired to minimize passive component size. Consider the 1.2 A output current capability and the 1.5 A internal switch rating for load requirements. The SOIC-8 package is appropriate for surface-mount assembly processes.

Part Context

This part belongs to the LT1375 series of monolithic buck switching regulators. It is functionally similar to the LT1376 but differs in specific electrical characteristics such as quiescent current and internal switch configuration. The CS8-5#PBF designation indicates the commercial temperature grade, SOIC-8 package, 5 V fixed output, and lead-free packaging.

Replacement Considerations

LT1375IS8-5#PBF (SOIC-8 variant)

FAQ

What is the maximum input voltage for the LT1375CS8-5#PBF?

The maximum input voltage is 25 V.

Does the LT1375CS8-5#PBF include a shutdown pin?

Yes, the device includes shutdown functionality.