Specification	LTC3311JV-0.875#PBF

Current - Output	12.5 A
Frequency - Switching [Max]	5 MHz
Frequency - Switching [Min]	500 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Package / Case	18-TFQFN Exposed Pad
Supplier Device Package	18-LQFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.25 V
Voltage - Output (Min/Fixed)	0.875 V

LTC3311/LTC3311-X Series

5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm × 3mm LQFN

Part	Function	Voltage - Output (Min/Fixed)	Package / Case	Current - Output	Number of Outputs	Voltage - Input (Min) [Min]	Frequency - Switching [Min]	Frequency - Switching [Max]	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Voltage - Input (Max) [Max]	Mounting Type	Topology	Voltage - Output (Max) [Max]	Frequency - Switching	Qualification	Voltage - Output (Min/Fixed) [Min]	Grade	Output Type
Analog Devices Inc./Maxim Integrated LTC3311JV-0.875#PBF	Step-Down	0.875 V	18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck
Analog Devices Inc./Maxim Integrated LTC3311HV#WPBF	Step-Down		18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck	5.5 V	2 MHz	AEC-Q100	0.5 V	Automotive	Adjustable
Analog Devices Inc./Maxim Integrated LTC3311JV#TRMPBF	Step-Down		18-TFQFN Exposed Pad	12.5 A	1	2.25 V			18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck	5.5 V	2 MHz		0.5 V		Adjustable
Analog Devices Inc./Maxim Integrated LTC3311JV-0.85#TRPBF	Step-Down	0.85 V	18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck
Analog Devices Inc./Maxim Integrated LTC3311JV-0.875#TRMPBF	Step-Down	0.875 V	18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck
Analog Devices Inc./Maxim Integrated LTC3311JV#PBF	Step-Down		18-TFQFN Exposed Pad	12.5 A	1	2.25 V			18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck	5.5 V	2 MHz		0.5 V		Adjustable
Analog Devices Inc./Maxim Integrated LTC3311JV-0.75#TRMPBF	Step-Down	0.75 V	18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck
Analog Devices Inc./Maxim Integrated LTC3311HV#PBF	Step-Down		18-TFQFN Exposed Pad	12.5 A	1	2.25 V			18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck	5.5 V	2 MHz		0.5 V		Adjustable
Analog Devices Inc./Maxim Integrated LTC3311JV#TRPBF	Step-Down		18-TFQFN Exposed Pad	12.5 A	1	2.25 V			18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck	5.5 V	2 MHz		0.5 V		Adjustable
Analog Devices Inc./Maxim Integrated LTC3311JV-0.875#TRPBF	Step-Down	0.875 V	18-TFQFN Exposed Pad	12.5 A	1	2.25 V	500 kHz	5 MHz	18-LQFN (3x3)	-40 °C	150 °C	Positive	5.5 V	Surface Mount	Buck

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	624	$ 9.78	1m+
	Tray	1	$ 8.53	1m+
		10	$ 6.00
		25	$ 5.52
Mouser	N/A	1	$ 8.52	1m+
		10	$ 6.22
		25	$ 5.83
		100	$ 5.67
		250	$ 5.53
		1000	$ 5.52

Description

General part information

LTC3311/LTC3311-X Series

The LTC3311/LTC3311-X is a very small, low noise, monolithic step-down DC/DC converter capable of providing up to 12.5A of output current from a 2.25V to 5.5V input supply. The device employs Silent Switcher 1 architecture to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz. For systems with higher power requirements, multi-phasing parallel converters is readily implemented.The LTC3311/LTC3311-X uses a constant frequency, peak current mode control architecture for fast transient response. A 500mV reference allows for low voltage outputs. 100% duty cycle operation delivers low drop out.Other features include a power good signal when the output is in regulation, precision enable threshold, output overvoltage protection, thermal shutdown, a temperature monitor, clock synchronization, mode selection and output short circuit protection. The device is available in a compact 18-lead 3mm × 3mm LQFN package.APPLICATIONSAutomotive/Industrial/CommunicationsServers, Telecom Power SuppliesDistributed DC Power Systems (POL)FPGA, ASIC, μP Core Supplies

Documents

Technical documentation and resources

LTC3311/LTC3311-X: 5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm × 3mm LQFN Data Sheet (Rev.A)

Data Sheet

DC3113A - Demo Manual (Rev.A)

User Guide

DC3059A - Demo Manual (Rev.0)

User Guide

LTC3311JV-0.875#PBF

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LTC3311JV-0.875#PBF

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Technical Specifications

LTC3311/LTC3311-X Series

Pricing

Description

LTC3311/LTC3311-X Series

Documents

DC3127A - Demo Manual (Rev.0)

DC3056A - Demo Manual (Rev.0)

DC3186A - Demo Manual (Rev.0)

DC3217A - Demo Manual (Rev.0)

R523 Reliability Data

Package Drawing - 18-Lead LQFN (3mm × 3mm × 0.94mm)

LTC3311/LTC3311-X: 5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm × 3mm LQFN Data Sheet (Rev.A)

DC3113A - Demo Manual (Rev.A)

DC3059A - Demo Manual (Rev.0)

LTC3311/LTC3311-X Series