LTC3308AIV#TRMPBF

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Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.5V TO 5.5V 4A 12-PIN LQFN EP T/R

LTC3308AIV#TRMPBF

Active

Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.5V TO 5.5V 4A 12-PIN LQFN EP T/R

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3308A Series

The LTC3308A is a very small, high efficiency, low noise, monolithic synchronous 4A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control at switching frequencies 1MHz to 3MHz and minimum on-time as low as 22ns, this regulator achieves fast transient response with small external components. Silent Switcher architecture minimizes EMI emissions.The LTC3308A operates in forced continuous or pulse skip mode for low noise, or low-ripple Burst Mode operation for high efficiency at light loads, ideal for battery-powered systems. The IC regulates output voltages as low as 500mV. Other features include output overvoltage protection, short-circuit protection, thermal shutdown, clock synchronization, and up to 100% duty cycle operation for low dropout. The device is available in a low profile 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed pad for low thermal resistance.APPLICATIONSOptical Networking, Servers, TelecomAutomotive, Industrial, CommunicationsDistributed DC Power Systems (POL)FPGA, ASIC, μP Core SuppliesBattery Operated Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3308AIV#TRMPBF

Current - Output	4 A
Frequency - Switching (Max)	3 MHz
Frequency - Switching (Min)	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	12-VFQFN Exposed Pad
Package Length	2 mm
Package Name	12-LQFN
Package Width	2 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.25 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.5 V

LTC3308A Series

Part	Voltage - Output (Max)	Synchronous Rectifier	Package / Case	Voltage - Input (Max)	Current - Output	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Output Configuration	Function	Output Type	Package Length	Package Name	Package Width	Topology	Voltage - Output (Min/Fixed)	Voltage - Input (Min)	Number of Outputs	Frequency - Switching (Max)	Frequency - Switching (Min)	Total Output Count	Non-Isolated Output Count	Board Type	Supplied Contents	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Utilized IC / Part	Voltage - Output	Main Purpose	Contents	Frequency - Switching
Analog Devices Inc./Maxim Integrated LTC3308AHV#TRPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	150 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AJV#TRMPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	150 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated DC2991A					4 A						Non-Isolated										1	1 count	Fully Populated	Board(s)	Buck	2.25 V	5.5 V	LTC3308A	1.2 V	DC/DC Step Down	Board	2 MHz
Analog Devices Inc./Maxim Integrated LTC3308AIV#TRPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	125 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AEV#TRPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	125 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AEV#TRMPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	125 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AIV#TRMPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	125 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AHV#TRMPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	150 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz
Analog Devices Inc./Maxim Integrated LTC3308AMPV#TRPBF			12-VFQFN Exposed Pad			Surface Mount						2 mm	12-LQFN	2 mm
Analog Devices Inc./Maxim Integrated LTC3308AJV#TRPBF	5.5 V	Yes	12-VFQFN Exposed Pad	5.5 V	4 A	Surface Mount	-40 °C	150 °C	Positive	Step-Down	Adjustable	2 mm	12-LQFN	2 mm	Buck	0.5 V	2.25 V	1	3 MHz	1 MHz

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3308AIV#TRMPBF | Datasheet

R523 Reliability Data

Package Drawing - 12-Lead LQFN (2mm x 2mm x 0.74mm)