LTC3871ILXE

Obsolete

Analog Devices

IC POWER MANAGEMENT

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LTC3871ILXE

Obsolete

Analog Devices

IC POWER MANAGEMENT

Deep-Dive with AI

DocumentsDatasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3871ILXE

Clock Sync	True
Control Features	Frequency Control, Phase Control, Enable, Current Limit, Soft Start
Duty Cycle (Max) [Max]	98 %
Frequency - Switching [Max]	460 kHz
Frequency - Switching [Min]	60 kHz
Function	Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	Programmable
Output Type	Transistor Driver
Package / Case	48-LQFP Exposed Pad
Supplier Device Package	48-eLQFP (7x7)
Synchronous Rectifier	True
Topology	Boost, Buck
Voltage - Supply (Vcc/Vdd) [Max]	100 V
Voltage - Supply (Vcc/Vdd) [Min]	1.2 V

LTC3871 Series

Bidirectional PolyPhase Synchronous Buck or Boost Controller

Part	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Control Features	Mounting Type	Duty Cycle (Max) [Max]	Output Configuration	Output Phases	Function	Supplier Device Package	Package / Case	Topology	Frequency - Switching	Main Purpose	Regulator Topology	Voltage - Input [Min]	Voltage - Input [Max]	Outputs and Type	Outputs and Type	Board Type	Voltage - Output	Current - Output	Supplied Contents
Analog Devices LTC3871ILXE	-40 °C	125 °C	2	1.2 V	100 V	Transistor Driver	60 kHz	460 kHz	Current Limit Enable Frequency Control Phase Control Soft Start	Surface Mount	98 %	Positive	Programmable	Step-Down Step-Up	48-eLQFP (7x7)	48-LQFP Exposed Pad	Boost Buck
Analog Devices LTC3871ELXE	-40 °C	125 °C	2	1.2 V	100 V	Transistor Driver	60 kHz	460 kHz	Current Limit Enable Frequency Control Phase Control Soft Start	Surface Mount	98 %	Positive	Programmable	Step-Down Step-Up	48-eLQFP (7x7)	48-LQFP Exposed Pad	Boost Buck
Analog Devices DC2348A-B																		110 kHz	Bidirectional DC/DC	Boost Buck	10 V 30 V	13 V 75 V	Non-Isolated	1	Fully Populated	12 V 48 V	7.5 A 30 A	Board(s)
Analog Devices LTC3871ELXE#PBF	-40 °C	125 °C	2	1.2 V	100 V	Transistor Driver	60 kHz	460 kHz	Current Limit Enable Frequency Control Phase Control Soft Start	Surface Mount	98 %	Positive	Programmable	Step-Down Step-Up	48-eLQFP (7x7)	48-LQFP Exposed Pad	Boost Buck

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

LTC3871 Series

The LTC3871/LTC3871-1 is a high performance bidirectional buck or boost switching regulator controller that operates in either buck or boost mode on demand. It regulates in buck mode from VHIGH-to-VLOWand boost mode from VLOW-to-VHIGHdepending on a control signal, making it ideal for 48V/12V automotive dual battery systems. An accurate current programming loop regulates the maximum current that can be delivered in either direction. The LTC3871/LTC3871-1 allows both batteries to supply energy to the load simultaneously by converting energy from one battery to the other.Its proprietary constant-frequency current mode architecture enhances the signal-to-noise ratio enabling low noise operation and provides excellent current matching between phases. Additional features include discontinuous or continuous mode of operation, OV/UV monitors, independent loop compensation for buck and boost operation, accurate output current monitoring and overcurrent protection. The LTC3871 and LTC3871-1 have different current limit foldback characteristics.ApplicationsAutomotive 48V/12V Dual Battery SystemsBackup Power Systems

Documents

Technical documentation and resources