LTC3859ALEUHF#PBF

Description：IC REG CTRLR MULT TOPOLOGY 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:1f171ec662f2 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

LTC3859ALEUHF#PBF 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 LTC3859ALEUHF#PBF

Description：IC REG CTRLR MULT TOPOLOGY 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
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 LTC3859ALEUHF#PBF

LTC3859ALEUHF#PBF

DC DC Switching Controllers Overview

The LTC3859ALEUHF#PBF is a triple output synchronous DC/DC switching regulator controller designed for high-performance power management applications. It integrates three independent channels configured as two buck and one boost converter, driving all N-channel power MOSFET stages. The device operates from a wide input supply range of 4.5V to 38V, with an extended temperature grade supporting operation from -40°C to +125°C. Key electrical parameters include a programmable switching frequency up to 850kHz, a typical quiescent current of 55µA, and output voltage regulation capability ranging from 800mV to 24V per channel. It features a constant frequency current mode architecture allowing phase-lockable operation.

DC DC Switching Controllers Feature Summary

Triple output topology combining two buck and one boost converter in a single package
Wide input voltage range supporting operation from 4.5V to 38V
Low quiescent current consumption for improved efficiency in standby modes
Phase-lockable switching frequency architecture for synchronization capabilities

DC DC Switching Controllers Applications

Industrial equipment requiring multiple regulated voltage rails
Telecommunications infrastructure power distribution systems
Automotive electronics control modules
Data center server power management units

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'ALEUHF#PBF' against official Analog Devices documentation to confirm the exact temperature grade, package variant, and lead-free status. Ensure compatibility with the target PCB footprint for the 38-pin QFN package. Cross-reference the datasheet revision history to validate parameter tolerances before finalizing the bill of materials.

DC DC Switching Controllers Selection Notes

Select this component when a design requires three distinct regulated outputs from a single controller IC to reduce board space and component count. Consider the 4.5V minimum input requirement and ensure the external MOSFET selection supports the desired current levels for both buck and boost topologies. Evaluate thermal performance requirements given the QFN-38 package constraints.

DC DC Switching Controllers Part Context

This part belongs to the LTC3859 family of low IQ synchronous controllers. It shares architectural similarities with other members like the LTC3859IUHF and LTC3859EUHF but differs in specific temperature ratings and packaging configurations. The 'A' designation typically indicates an extended or specific industrial temperature grade within the manufacturer's product line hierarchy.