LT1161CSW#PBF

Overview

The LT1161CSW#PBF is a quad high-side MOSFET driver manufactured by Analog Devices Inc. It enables the use of low-cost N-channel power MOSFETs for high-side switching applications. The device features four independent switch channels, each containing a completely self-contained charge pump to fully enhance an N-channel MOSFET switch with no external components. It operates within an input voltage range of 8V to 48V and provides a typical on-resistance of 0.065V. The component is housed in a 20-pin SOIC W package.

Feature Summary

• Four independent switch channels with self-contained charge pumps
• Enables low-cost N-channel MOSFET usage for high-side switching
• Integrated overvoltage shutdown protection

Applications

• Automotive solenoid driving
• Industrial switching applications
• High-side MOSFET control circuits

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the 20-pin SOIC W package dimensions match your PCB footprint requirements. Ensure the 8V to 48V input voltage range aligns with your system's supply rails. Check for automotive qualification status if deploying in vehicle environments. Validate that the isolated inputs and fault output configurations meet your design specifications.

Selection Notes

Select this component when designing high-side switches requiring independent channel control without external bootstrap capacitors. It is suitable for applications needing integrated protection against overvoltage conditions. Consider the 20-pin wide SOIC package for thermal management and ease of assembly. Evaluate the 1A drive capability against the gate charge requirements of the target N-channel MOSFETs.

Part Context

The LT1161 series belongs to Analog Devices' portfolio of protected high-side drivers. This family allows designers to replace expensive P-channel solutions with cost-effective N-channel alternatives. The CSW variant specifically denotes the commercial temperature range and the wide-body SOIC packaging style.

Replacement Considerations

LT1161CS: Identical functional equivalent without the Pb-free suffix.