LT1766HFE#PBF

Overview

The LT1766HFE#PBF is a monolithic Buck switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 5.5 V to 60 V and delivers an adjustable output voltage with a maximum output current of 1.2 A. The device features a fixed switching frequency of 200 kHz and includes an internal 1.5 A switch. It is housed in a 16-lead TSSOP package with exposed pad for surface mount installation. The component supports a shutdown function and maintains a quiescent supply current of 2.5 mA, ensuring efficient power management across its specified operating temperature range.

Feature Summary

• Integrates a high-voltage 1.5 A power switch capable of handling wide input voltage ranges up to 60 V.
• Provides adjustable output regulation through external feedback network configuration.
• Includes a dedicated shutdown pin to minimize standby power consumption during inactive periods.

Applications

• Industrial control systems requiring robust step-down conversion
• Distributed power architectures in telecommunications equipment
• Battery-powered devices utilizing high-voltage source inputs

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm package type and thermal characteristics. Confirm RoHS compliance status as indicated in the latest datasheet revision. Ensure that the procurement channel provides valid traceability for this discontinued or limited-supply component variant. Cross-reference the ordering part number with the manufacturer's current product portfolio to identify potential obsolescence risks or alternative sourcing requirements.

Selection Notes

Select this component when designing circuits that require high input voltage tolerance combined with moderate output current capabilities. The fixed 200 kHz switching frequency allows for optimized passive component sizing while maintaining efficiency. Consider the thermal performance of the TSSOP-16 package with exposed pad for adequate heat dissipation in dense layouts. Evaluate the need for adjustable versus fixed output configurations based on system voltage requirements.

Part Context

The LT1766 series represents a family of high-voltage synchronous buck regulators designed for demanding applications. This specific part belongs to the HFE variant, indicating a particular package and temperature grade configuration within the broader product line. It serves as a solution for converting higher bus voltages down to lower logic or analog supply levels efficiently.

Replacement Considerations

LT1766EFE-5#PBF