Analog Devices-LTC3555EUFD-1#PBF Battery Management ICs Switching Battery Charger Li-Ion/Li-Pol 1022mA 4.2V 28-Pin QFN EP Tube

Integrated Circuits (ICs)

LTC3874EUFD#PBF

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Analog Devices Inc./Maxim Integrated

POLYPHASE STEP-DOWN SYNCHRONOUS SLAVE CONTROLLER WITH SUB-MILLIOHM DCR SENSING

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Integrated Circuits (ICs)

LTC3874EUFD#PBF

Active

Analog Devices Inc./Maxim Integrated

POLYPHASE STEP-DOWN SYNCHRONOUS SLAVE CONTROLLER WITH SUB-MILLIOHM DCR SENSING

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DocumentsDatasheet R526 Reliability Data

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3874EUFD#PBF

Clock Sync	True
Control Features	Frequency Control, Enable, Phase Control, Current Limit
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	28-WFQFN Exposed Pad
Supplier Device Package	28-QFN (4x5)
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	38 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

LTC3874 Series

PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing

Part	Mounting Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Supplier Device Package	Output Type	Output Phases	Package / Case	Function	Number of Outputs	Output Configuration	Topology	Frequency - Switching [Min]	Frequency - Switching [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Control Features
Analog Devices Inc./Maxim Integrated LTC3874IUF-1#TRPBF	Surface Mount	4.5 V	38 V	24-QFN (4x4)	Transistor Driver	2	24-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control
Analog Devices Inc./Maxim Integrated LTC3874IUFD#PBF	Surface Mount	4.5 V	38 V	28-QFN (4x5)	Transistor Driver	2	28-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control
Analog Devices Inc./Maxim Integrated LTC3874EUF-1#PBF	Surface Mount	4.5 V	38 V	24-QFN (4x4)	Transistor Driver	2	24-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control
Analog Devices Inc./Maxim Integrated LTC3874EUFD#PBF	Surface Mount	4.5 V	38 V	28-QFN (4x5)	Transistor Driver	2	28-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control
Analog Devices Inc./Maxim Integrated LTC3874EUFD#TRPBF	Surface Mount	4.5 V	38 V	28-QFN (4x5)	Transistor Driver	2	28-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control
Analog Devices Inc./Maxim Integrated LTC3874IUFD#TRPBF	Surface Mount	4.5 V	38 V	28-QFN (4x5)	Transistor Driver	2	28-WFQFN Exposed Pad	Step-Down	2	Positive	Buck	250 kHz	1 MHz	-40 C	125 °C	Current Limit Enable Frequency Control Phase Control

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	118	$ 8.56	1m+
	Tube	1	$ 8.56	1m+
		10	$ 5.75
		73	$ 4.36
		146	$ 4.02
		292	$ 3.73
		511	$ 3.71
Mouser	N/A	1	$ 6.99	1m+
		10	$ 5.39
		25	$ 5.02
		73	$ 4.20
		292	$ 3.97
		511	$ 3.92
		1022	$ 3.87
		2555	$ 3.86

Description

General part information

LTC3874 Series

The LTC3874-1 is a dual PolyPhase®current mode synchronous step-down slave controller. It enables high current, multiphase applications when paired with a companion master controller by extending the phase count. Compatible master controllers include the LTC3884-1, LTC3774, LTC3875, LTC3877 and LTC3866. The LTC3874-1 employs a unique architecture that enhances the signal-to-noise ratio of the current sense signal, allowing the use of submilliohm DC resistance power inductors to maximize efficiency while reducing switching jitter. Its peak current mode architecture allows for accurate phase-to-phase current sharing even for dynamic loads.Effectively working with a master controller, the LTC3874-1 supports all the programmable features as well as fault protection.ApplicationsHigh Current Distributed Power SystemsTelecom, Datacom and Storage SystemsIntelligent Energy Efficient Power Regulation