LT3641HFE#PBF

$11.15

Description：IC REG BUCK ADJ DL 28TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:1028bcce997b Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ DL 28TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：2
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：42V
Voltage - Output (Min/Fixed)：0.6V, 1.265V
Voltage - Output (Max)：39.48V
Current - Output：1.3A, 1.1A
Frequency - Switching：500kHz ~ 2MHz
Synchronous Rectifier：Both
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package：28-TSSOP-EP
Grade：-
Qualification：-

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LT3641HFE#PBF

Overview

The LT3641HFE#PBF is a dual-channel synchronous step-down DC/DC converter manufactured by Analog Devices. It operates with an input voltage range of 4V to 42V and provides two independent adjustable outputs ranging from 1.265V to 40.97V. Each channel delivers up to 1.3A of output current, supporting automotive applications. The device features a programmable switching frequency between 350kHz and 2.5MHz and includes integrated power-on reset and watchdog timer functions for system protection.

Feature Summary

Dual-channel synchronous buck topology with independent adjustable outputs
Integrated power-on reset generator and watchdog timer functionality
Programmable switching frequency for optimized efficiency and component size
Automotive-grade qualification for high reliability in vehicle environments

Applications

Automotive infotainment systems requiring multiple regulated rails
Industrial control modules needing isolated or separate power domains
Telecommunications equipment utilizing wide input voltage ranges
Embedded systems with strict power-on sequencing requirements

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure that the ordering information matches the exact part number variant required for your design, as packaging options may differ. Cross-reference the datasheet revision date to guarantee compatibility with your current supply chain requirements and technical specifications.

Selection Notes

Select this component when designing systems that require two independent low-noise power rails from a single wide-input source. The dual-output architecture simplifies board layout compared to using separate converters. Consider the thermal performance within the TSSOP-EP package and ensure adequate PCB copper area for heat dissipation under maximum load conditions while maintaining automotive temperature ratings.

Part Context

This part belongs to the LT3641 family of high-voltage synchronous step-down converters. It shares architectural similarities with other devices in the series but offers dual-channel capability distinct from single-output variants. The HFE suffix indicates a specific package configuration and temperature grade suitable for demanding industrial and automotive environments.