LT1172CSW#PBF

Overview

The LT1172CSW#PBF is a monolithic high-power switching voltage regulator manufactured by Analog Devices. It supports multiple standard topologies including buck, boost, flyback, forward, inverting, and Cuk configurations. The device features an integrated high-current switch capable of delivering up to 1.25 A output current with adjustable output voltage. It operates within an input voltage range of 3 V to 60 V and switches at a frequency of 100 kHz. The component is housed in a 16-lead SOIC package and functions within a temperature range of 0°C to +100°C.

Feature Summary

• Integrates a high-efficiency power switch with complete oscillator, control, and protection circuitry on a single die.
• Supports versatile DC-to-DC conversion modes including step-down, step-up, isolated, and inverted outputs.
• Includes shutdown capability for enhanced system power management.

Applications

• High efficiency 5V buck converter circuits
• Forward converter designs
• Flyback converter implementations
• Positive buck converter applications

Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with required thermal and electrical specifications. Confirm RoHS compliance status and lead-free manufacturing details as indicated in the product documentation. Check availability constraints and shipping restrictions provided by authorized distributors prior to ordering.

Selection Notes

Select this component when a single IC must support diverse topology requirements such as buck, boost, or flyback without external driver complexity. Consider the 1.25 A current limit and 60 V maximum input rating for appropriate load and source conditions. Ensure the SOIC-16 package fits the PCB layout constraints and thermal dissipation needs of the target design.

Part Context

This part belongs to the LT1172 series of high-efficiency switching regulators from Analog Devices. The series includes variants like LT1172CT and LT1172CS8, which share core functional characteristics but differ in package types and temperature grades. The LT1172 family is designed for applications requiring flexible power conversion architectures with integrated power switching capabilities.

Replacement Considerations

Direct substitutes include other LT1172 variants such as LT1172CT#PBF or LT1172CS8#PBF, depending on the required package and temperature range. Verify pinout compatibility and thermal performance when cross-referencing with alternative packages within the same family.