LT1766EFE#PBF

Overview

The LT1766EFE#PBF is a monolithic buck switching voltage regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 5.5 V to 60 V and delivers a fixed output voltage of 5 V. The device supports an output current of 1.2 A with a switching frequency of 200 kHz. Quiescent current is specified at 25 uA, while operating supply current is 2.5 mA. It features a shutdown function and operates across a temperature range of 0°C to +125°C. The component is housed in a 16-TSSOP package with an exposed pad.

Feature Summary

• Integrates a high-voltage buck converter capable of handling input voltages up to 60 V
• Includes a dedicated shutdown pin for power management control
• Utilizes a fixed 200 kHz switching frequency for efficient energy conversion
• Provides thermal performance optimization through an exposed pad design

Applications

• Industrial power supply systems requiring wide input voltage ranges
• Distributed power architectures in telecommunications equipment
• Battery-powered devices needing efficient step-down regulation
• Embedded systems utilizing high-voltage bus lines

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS standards when sourcing. Confirm the TSSOP-16 package dimensions match your PCB footprint requirements. Ensure the 5 V fixed output aligns with your load specifications. Check for any recent Product Change Notifications regarding epoxy or marking changes from the manufacturer.

Selection Notes

Select this component when a fixed 5 V output is required from a high-voltage source between 5.5 V and 60 V. Consider the 1.2 A output current limit against your peak load demands. Evaluate the 200 kHz frequency for EMI constraints versus external component size. Compare quiescent current requirements if standby power consumption is critical.

Part Context

This part belongs to the LT1766 series of monolithic buck regulators designed for high-input voltage applications. It distinguishes itself from lower-voltage counterparts by supporting inputs up to 60 V. The series offers integrated switches and control logic, reducing external component count compared to discrete solutions.

Replacement Considerations

LT1766EFE-3.3#PBF: Fixed 3.3 V output variant. LT1766EFE-5#PBF: Alternative supplier designation for identical 5 V specification.