LTC3859ALIUHF#TRPBF

$6.17

Description：IC REG CTRLR MULT TOPOLOGY 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:99db80bc8f58 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC3859ALIUHF#TRPBF is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR MULT TOPOLOGY 38QFN. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for LTC3859ALIUHF#TRPBF

Description：IC REG CTRLR MULT TOPOLOGY 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Output Type：Transistor Driver
Function：Step-Down, Step-Up/Step-Down
Output Configuration：Positive
Topology：Buck, Buck-Boost, SEPIC
Number of Outputs：3
Output Phases：2
Voltage - Supply (Vcc/Vdd)：4.5V ~ 38V
Frequency - Switching：115kHz ~ 835kHz, 350kHz ~ 535kHz
Duty Cycle (Max)：99%, 100%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：Enable, Frequency Control, Power Good, Soft Start, Tracking
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：38-WFQFN Exposed Pad
Supplier Device Package：38-QFN (5x7)

DC DC Switching Controllers datasheet and documents for LTC3859ALIUHF#TRPBF

LTC3859ALIUHF#TRPBF

DC DC Switching Controllers Overview

The LTC3859ALIUHF#TRPBF is a triple output synchronous DC/DC switching regulator controller designed for high efficiency applications. It features a constant frequency current mode architecture with a phase-lockable switching frequency up to 850kHz. The device operates from a wide input supply range of 4.5V to 38V, supporting buck, buck/boost, and SEPIC topologies. It includes a low 28μA Burst Mode IQ for improved light load efficiency. The controller drives all N-channel power MOSFET stages and offers precise tracking and synchronization capabilities within a 38-lead QFN package.

DC DC Switching Controllers Feature Summary

Supports triple output configurations including buck, buck/boost, and SEPIC topologies
Features ultra-low 28μA Burst Mode IQ for enhanced light load efficiency
Enables phase-lockable switching frequencies up to 850kHz via constant frequency current mode architecture
Provides integrated tracking, soft-start, and power good signal monitoring

DC DC Switching Controllers Applications

High efficiency dual 1.2V/3.3V step-down converters with 10.5V SEPIC converter
Wide input range dual 12V/3.3V synchronous buck/boost converters
Triple output buck-boost synchronous controllers for industrial systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the AL variant designation corresponds to the specified 28μA Burst Mode IQ performance characteristics. Ensure the 38-lead QFN (5x7) package dimensions match the target PCB layout requirements. Cross-reference the manufacturer's latest datasheet to validate active status and environmental compliance details prior to final procurement decisions.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring three independent regulated outputs from a single controller IC. It is suitable for applications needing flexible topology combinations such as buck combined with boost or SEPIC sections. The wide 4.5V to 38V input range accommodates various bus voltage levels. Consider the 850kHz maximum switching frequency for balancing component size against transient response requirements in space-constrained environments.

DC DC Switching Controllers Part Context

This part belongs to the LTC3859 family of triple output synchronous controllers from Analog Devices. The family supports various package options including QFN and TSSOP EP variants. These controllers are engineered for driving N-channel power MOSFETs in complex multi-rail power architectures. The series is characterized by high precision and flexibility in configuring mixed step-down and step-up converter stages.