LT3641IFE

Overview

The LT3641IFE is a dual monolithic buck regulator from Analog Devices, housed in a TSSOP-EP-28 package. It operates with an input voltage range of 4 V to 42 V and delivers up to 1.3 A per channel. The device features adjustable output voltages ranging from 1.265 V to 40.97 V. Key electrical parameters include a quiescent current of 275 uA and a switch frequency adjustable between 350 kHz and 2.5 MHz. It supports shutdown mode and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates two independent high-efficiency buck converters in a single compact package
• Includes integrated power-on reset generator and watchdog timer for system protection
• Supports wide input voltage range suitable for industrial and automotive applications

Applications

• Industrial control systems requiring multiple regulated rails
• Automotive electronics with wide input voltage variations
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal performance characteristics. Ensure the selected variant matches the required operating temperature range and package lead finish specifications for your assembly process.

Selection Notes

Select this component when dual isolated or non-isolated buck outputs are needed from a single high-voltage source. Consider the TSSOP-EP-28 package for thermal management requirements. Evaluate the need for integrated reset and watchdog features versus external discrete solutions to optimize board space.

Part Context

Part of the LT3641 family of dual buck regulators designed for high-density power conversion. It complements other PMIC solutions by offering integrated monitoring and protection features typically found in more complex multi-rail controllers.

Replacement Considerations

LT3641IUFD#PBF offers identical functionality in a QFN-28 package.