Analog Devices LTC3315B

Overview

Topology	Buck Converter
Input voltage	5 V
Switching frequency	10000 kHz
Output 1	2.5 V / 2 A
Output 2	3.3 V / 2 A

Description

The LTC®3315B features dual 2A monolithic synchronous step-down converters operating from a 2.25V to 5.5V input supply in one package for space-constrained applications with demanding performance requirements. Using constant frequency, peak current mode control at switching frequencies up to 10MHz with a minimum ontime as low as 25ns, both bucks achieve high efficiency and fast transient response in a very small application footprint.

Features

Dual Outputs Each with 2A Output Current
High Efficiency: 19mΩ NMOS and 75mΩ PMOS
Wide Bandwidth, Fast Transient Response
Switching Frequency Synchronizable Up to 10MHz
VIN Range: 2.25V to 5.5V
VOUT Range: 0.5V to VIN
VOUT Accuracy: }1%
Low Ripple Burst ModeR Operation
Peak Current Mode Control
Minimum On-Time: 25ns
Safely Tolerates Inductor Saturation in Overload
Shutdown Current: 1.2μA
Precision 400mV Enable Thresholds
Internal Soft-Start and Compensation
Power Good Output
Low Profile, Thermally Enhanced 12-Lead 2mm × 2mm × 0.74mm LQFN Package
AEC-Q100 Qualified for Automotive Applications

Typical applications

Servers, Optical Networking, Communications
Industrial
Telecom Supplies, Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
Automotive

More information

Products

	Order Code	Datasheet	Simulation	Downloads	Status	Product series	L (µH)	I_R (A)	I_SAT1 (A)	I_SAT2 (A)	R_{DC max.} (mΩ)	f_res (MHz)	I_SAT (A)	R_DC (mΩ)	Samples
	744040240047	SPEC		9 files EDA models: Components ZIP ALT WE-LQS (rev24a).IntLib \| 1.1 MB CDS Cadence_WE-LQS (rev24b).zip \| 6.2 MB EAG Eagle_WE-LQS (rev24a).lbr \| 135.4 KB KIC KiCad_WE-LQS (rev25a).zip \| 1.4 MB ZUK Cadstar_WE-LQS (rev20b).zip \| 20.4 KB CAD files ZIP IGS WE-LQS_252012 (rev1).igs \| 619.5 KB STP WE-LQS_252012 (rev1).stp \| 344.6 KB Electric models ZIP PSP PSpice_WE-LQS (rev23a).zip \| 36.9 KB SCS Spectre_WE-LQS (rev24a).mod \| 42.7 KB Download all 9 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	WE-LQS SMT Power Inductor	0.47	2.6	–	–	–	231	5	32
	74479276147	SPEC		10 files EDA models: Components ZIP ALT Altium_WE-PMCI (rev25a).IntLib \| 105 KB CDS Cadence_WE-PMCI (rev25a).zip \| 644.5 KB EAG Eagle_WE-PMCI (rev25a).lbr \| 55 KB KIC KiCad_WE-PMCI (rev25a).zip \| 76.2 KB ZUK Cadstar_WE-PMCI (rev19a).zip \| 14.8 KB CAD files ZIP 3D WE-PMCI_201610_3D (rev1).pdf \| 29 KB IGS Download_IGS_WE-PMCI-0806 (rev1).igs \| 194.7 KB STP Download_STP_WE-PMCI-0806 (rev1).stp \| 46.1 KB Electric models ZIP PSP PSpice_WE-PMCI (rev25a).zip \| 6.6 KB SCS Spectre_WE-PMCI (rev24a).mod \| 7.1 KB Download all 10 files as zip archive ZIP	Active i\| Production is active. Expected lifetime: >10 years.	WE-PMCI Power Molded Chip Inductor	0.47	5.4	2.95	6.3	30	165	4.2	–

	Order Code	Datasheet	Simulation
	744040240047	SPEC
	74479276147	SPEC

Samples

	Order Code	Datasheet	Simulation	Downloads	Status	Product series	L (µH)	I_R (A)	I_SAT1 (A)	I_SAT2 (A)	R_{DC max.} (mΩ)	f_res (MHz)	I_SAT (A)	R_DC (mΩ)	Samples

IC manufacturers (97)

Dual 5V, 2A Synchronous Step-Down DC/DCs in 2mm × 2mm LQFN

Overview

Description

Features

Typical applications

More information

Products

EDA models: Components
ZIP

CAD files
ZIP

Electric models
ZIP

Download all 9 files as zip archive
ZIP

EDA models: Components
ZIP

CAD files
ZIP

Electric models
ZIP

Download all 10 files as zip archive
ZIP

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