LT3437EDD#PBF

Overview

The LT3437EDD#PBF is a monolithic buck switching regulator from Analog Devices, housed in a DFN-10 package. It operates with an input voltage range of 3.3 V to 60 V and delivers up to 400 mA output current. The device features an adjustable output voltage and switches at a fixed frequency of 200 kHz. Key electrical parameters include a quiescent operating current of 75 uA and a static current of 1.35 mA. It supports shutdown functionality and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-voltage buck switch for efficient step-down conversion
• Provides low quiescent current operation to minimize power consumption
• Includes shutdown control capability for system power management

Applications

• Industrial control systems requiring isolated or non-isolated power regulation
• Automotive electronics operating within wide input voltage ranges
• Communication infrastructure equipment needing compact power solutions

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS standards before ordering. Confirm that the DFN-10 package footprint matches your PCB design requirements. Check official Analog Devices documentation for thermal pad connection guidelines to ensure proper heat dissipation during operation. Ensure the supply voltage does not exceed the maximum rated input limit of 60 V to prevent device damage.

Selection Notes

Select this component when a compact solution is needed for high-input voltage applications. The 200 kHz switching frequency allows for smaller external passive components compared to lower frequency alternatives. Consider the 400 mA output limit to ensure it meets the load requirements of your specific circuit design without exceeding thermal constraints.

Part Context

This part belongs to the LT3437 series of high-voltage buck regulators. It is designed for applications where space is limited and input voltages are significantly higher than the required output levels. The DFN-10 package provides a small form factor suitable for dense board layouts.

Replacement Considerations

LT3480IDD#PBF offers similar buck topology but with different current ratings and switching frequencies.