LT1765EFE-3.3#TRPBF

Overview

The LT1765EFE-3.3#TRPBF is a monolithic step-down DC/DC switching converter manufactured by Analog Devices Inc., housed in a 16-TSSOP package with an exposed pad and supplied in tape and reel format. It operates as a fixed-output buck regulator providing 3.3V at up to 3A output current. The device accepts an input voltage range from 3V to 25V and utilizes a fixed 1.25MHz switching frequency. Key electrical parameters include a maximum operating junction temperature of 125°C, a shutdown feature for power management, and a typical quiescent current of 15µA during standby.

Feature Summary

• Integrates a high-current internal power switch capable of delivering up to 3A continuous load current.
• Features a fixed 1.25MHz switching frequency to minimize external component size while maintaining stable regulation.
• Includes a shutdown pin that significantly reduces supply current when the device is not in active use.

Applications

• Point-of-load regulation for embedded systems requiring wide input voltage tolerance
• Battery-powered equipment utilizing step-down conversion from higher cell voltages
• Space-constrained designs needing compact surface-mount power solutions

Procurement Notes

Verify the suffix #TRPBF confirms the tape-and-reel packaging variant distinct from tube-packaged equivalents. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the specific lot date code meets project requirements. Cross-reference the exact part number against the latest datasheet revision to validate pinout and thermal specifications remain unchanged.

Selection Notes

Select this component when a fixed 3.3V output is required from a 3V to 25V input source. The 1.25MHz frequency allows for smaller inductors compared to lower-frequency alternatives. The 16-TSSOP-EP package provides necessary thermal dissipation for 3A loads. Verify that the application does not require synchronous rectification, as this model uses a non-synchronous topology.

Part Context

This part belongs to the LT1765 family of 3A monolithic buck converters. It shares core architecture with variants offering different fixed output voltages such as 1.8V, 2.5V, and 5V. The LT1765 series is designed for applications demanding high efficiency and fast transient response within a compact footprint, serving as a versatile solution for general-purpose power management tasks.

Replacement Considerations

LT1765EFE-3.3#PBF offers identical electrical performance but is packaged in tubes rather than tape and reel.