LT3437IDD#TRPBF

Overview

The LT3437IDD#TRPBF is a high-voltage step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range from 3.3 V to 60 V and provides an adjustable output voltage up to 400 mA of continuous current. The device integrates a 60 V N-channel power switch and functions at a fixed switching frequency of 200 kHz. Key electrical specifications include a quiescent current of 100 µA and an operating junction temperature range from -40°C to +150°C. It is housed in a thermally enhanced TSSOP-16 package.

Feature Summary

• Integrates a high-voltage 60 V N-channel power switch for direct connection to industrial bus lines
• Supports wide input voltage ranges suitable for 24 V and 48 V systems
• Features low quiescent current operation to enhance efficiency in standby modes

Applications

• Industrial automation control systems
• Telecommunications infrastructure power distribution
• Automotive electronics requiring high-voltage buck conversion

Procurement Notes

Verify the specific suffix IDD against official Analog Devices documentation to confirm pinout and thermal pad configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the TSSOP-16 package dimensions match your PCB footprint design constraints before finalizing procurement orders.

Selection Notes

Select this regulator when designing circuits that require high input voltages up to 60 V. It is appropriate for applications needing moderate output currents around 400 mA. Consider the 200 kHz switching frequency for balancing component size and electromagnetic interference. Evaluate thermal performance requirements given the maximum junction temperature rating of 150°C for robust operation in constrained environments.

Part Context

This component belongs to the LT3437 series of high-voltage buck regulators. It is designed to replace older discrete solutions or lower-voltage regulators in industrial settings. The series offers integrated protection features and simplified external component counts compared to non-integrated alternatives.

Replacement Considerations

LT3437IFE#TRPBF