LT3741EFE-1#PBF

Overview

The LT3741EFE-1#PBF is a fixed frequency synchronous step-down DC/DC controller designed to accurately regulate output current up to 20A. It operates with an input voltage range of 6V to 36V and provides a positive output voltage adjustable from 4V to 34V. The device features a switching frequency of 1MHz, supports clock synchronization, and includes control characteristics such as enable, frequency control, and soft start. It is housed in a 20-TSSOP-EP package and functions within a junction temperature range of -40°C to +125°C.

Feature Summary

• Synchronous buck topology for high-efficiency power conversion
• Integrated constant current regulation capability for battery charging applications
• Clock synchronization input for noise reduction and multi-phase operation

Applications

• High-power constant current LED drivers
• Battery charger systems requiring precise current regulation
• General-purpose step-down DC/DC power supplies

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to ensure correct pinout and functional configuration. Confirm that the TSSOP-EP package variant matches the thermal and mechanical requirements of the target PCB layout. Cross-reference the datasheet revision date to validate all electrical specifications before finalizing component selection.

Selection Notes

Select this controller when designing systems requiring simultaneous constant voltage and constant current regulation capabilities. Ensure the external MOSFETs are rated for the maximum expected load current of 20A. Verify that the application environment stays within the specified -40°C to +125°C operating temperature range for reliable performance.

Part Context

This component belongs to the LT3741 family of synchronous step-down controllers manufactured by Analog Devices Inc. It is part of the broader PMIC category, specifically categorized under DC DC Switching Controllers. The device shares core architectural features with other members of the series but is distinguished by its specific package type and operational parameters defined in the official datasheet.

Replacement Considerations

LT3741IFE-1#PBF

FAQ

What is the maximum regulated output current for this controller?

The LT3741EFE-1#PBF is designed to accurately regulate output current up to 20A.

Does the device support external clock synchronization?

Yes, the controller includes a clock synchronization feature to allow alignment with external timing signals.