LTC3854EMSE#PBF

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Analog Devices

DC/DC CONTROLLER, SYNCH BUCK, 4.5 V TO 38 V SUPPLY, 1 OUTPUT, 98% DUTY CYCLE, 400KHZ, MSOP-EP-12

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DocumentsR526 Reliability Data Technical Data Sheet EN +1

LTC3854EMSE#PBF

Active

Analog Devices

DC/DC CONTROLLER, SYNCH BUCK, 4.5 V TO 38 V SUPPLY, 1 OUTPUT, 98% DUTY CYCLE, 400KHZ, MSOP-EP-12

Deep-Dive with AI

DocumentsR526 Reliability Data Technical Data Sheet EN +1

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3854EMSE#PBF

Clock Sync	False
Control Features	Soft Start, Enable
Duty Cycle (Max) [Max]	98 %
Frequency - Switching	400 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	Exposed Pad, 12-TSSOP
Package / Case	0.118 in, 3 mm
Supplier Device Package	12-MSOP-EP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	38 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

LTC3854 Series

Small Footprint, Wide VINRange Synchronous Step-Down DC/DC Controller

Part	Number of Outputs	Output Phases	Frequency - Switching	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Output Type	Duty Cycle (Max) [Max]	Supplier Device Package	Function	Topology	Output Configuration	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Package / Case	Package / Case
Analog Devices LTC3854EDDB#TRMPBF	1	1	400 kHz	Surface Mount	85 °C	-40 °C	Enable Soft Start	Transistor Driver	98 %	12-DFN (3x2)	Step-Down	Buck	Positive	38 V	4.5 V	12-WFDFN Exposed Pad
Analog Devices LTC3854EMSE#PBF	1	1	400 kHz	Surface Mount	85 °C	-40 °C	Enable Soft Start	Transistor Driver	98 %	12-MSOP-EP	Step-Down	Buck	Positive	38 V	4.5 V	12-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices LTC3854IMSE#PBF	1	1	400 kHz	Surface Mount	85 °C	-40 °C	Enable Soft Start	Transistor Driver	98 %	12-MSOP-EP	Step-Down	Buck	Positive	38 V	4.5 V	12-TSSOP Exposed Pad	0.118 in 3 mm

Pricing

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

Distributor	Package	Quantity	$

Arrow	N/A	148	$ 2.98
Digikey	Tube	1	$ 6.64
		10	$ 4.50
		37	$ 3.75
		111	$ 3.29
		259	$ 3.01
		518	$ 2.83
		1036	$ 2.68
		2516	$ 2.53
Newark	Each	1	$ 6.43
		10	$ 4.25
		25	$ 3.86
		74	$ 3.47
		111	$ 3.23
		259	$ 3.00
		518	$ 2.71

Description

General part information

LTC3854 Series

The LTC3854 is a high performance synchronous stepdown switching DC/DC controller that drives an all N-channel synchronous power MOSFET stage.The LTC3854 features a 400kHz constant frequency current mode architecture. The LTC3854 operates from a 4.5V to 38V (40V absolute maximum) input voltage range and regulates the output voltage from 0.8V to 5.5V.The RUN/SS pin provides both soft-start and enable features. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Current foldback limits MOSFET dissipation during short circuit conditions. Current foldback functions are disabled during soft-start.The LTC3854 has a minimum on-time at 75ns, making it well suited for high step-down ratios. The strong onboard MOSFET drivers allow the use of high power external MOSFETs to produce output currents up to 20A.ApplicationsAutomotive SystemsTelecom SystemsIndustrial EquipmentDistributed DC Power Systems

Documents

Technical documentation and resources

R526 Reliability Data

Reliability Data

Technical Data Sheet EN

Datasheet