LT3479EDE#PBF

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Analog Devices Inc./Maxim Integrated

3A, FULL FEATURED DC/DC CONVERTER WITH SOFT-START AND INRUSH CURRENT PROTECTION

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LT3479EDE#PBF

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Analog Devices Inc./Maxim Integrated

3A, FULL FEATURED DC/DC CONVERTER WITH SOFT-START AND INRUSH CURRENT PROTECTION

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3479 Series

The LT3479 is a current mode, fixed frequency step-up DC/DC converter with an internal 3A, 42V switch. Efficiencies of up to 89% can be achieved in typical applications. It features a programmable soft-start function to limit inductor current during start-up and inrush current protection to protect the LT3479 during shorts and line transients. Both inputs of the error amplifier are available to the user allowing positive and negative output voltages. Through an external resistor, the user can program the switching frequency from 200kHz to 3.5MHz. The low profile (0.75mm) 14-pin, 4mm × 3mm DFN package provides excellent thermal performance in a small footprint. The LT3479 is also available in a thermally enhanced 16-pin TSSOP package.ApplicationsHigh Power LED DriverDSL ModemsDistributed Power

Technical Specifications

Parameters and characteristics for this part

Specification	LT3479EDE#PBF

Current - Output	3 A
Frequency - Switching (Max)	3.5 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive or Negative, Positive, Negative
Output Type	Adjustable
Package / Case	14-WFDFN Exposed Pad
Package Length	4 mm
Package Name	14-DFN
Package Width	3 mm
Synchronous Rectifier	No
Topology	Boost
Voltage - Input (Max)	24 V
Voltage - Input (Min)	2.3 V
Voltage - Output (Max)	42 V
Voltage - Output (Min/Fixed)	1.235 V

LT3479 Series

Part	Frequency - Switching (Min)	Frequency - Switching (Max)	Current - Output	Number of Outputs	Voltage - Input (Max)	Package Name	Synchronous Rectifier	Voltage - Input (Min)	Package Width	Package Features	Package Length	Topology	Function	Output Configuration	Output Type	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Output (Max)	Mounting Type	Voltage - Output (Min/Fixed)	Non-Isolated Output Count	Total Output Count	Utilized IC / Part	Regulator Topology	Current - Output (Max)	Current - Output (Min)	Contents	Voltage - Input (Range 2) Minimum	Voltage - Input (Range 2) Maximum	Voltage - Input (Range 1) Minimum	Voltage - Input (Range 1) Maximum	Voltage - Output	Main Purpose	Package / Case
Analog Devices Inc./Maxim Integrated LT3479EFE#TRPBF	200 kHz	3.5 MHz	3 A	1	24 V	16-TSSOP 16-TSSOP-EP	No	2.5 V	4.4 mm	Exposed Pad	0.173 in	Boost	Step-Up	Negative Positive Positive or Negative	Adjustable	0 °C	70 °C	42 V	Surface Mount	1.235 V
Analog Devices Inc./Maxim Integrated LT3479EFE#PBF	200 kHz	3.5 MHz	3 A	1	24 V	16-TSSOP 16-TSSOP-EP	No	2.5 V	4.4 mm	Exposed Pad	0.173 in	Boost	Step-Up	Negative Positive Positive or Negative	Adjustable	0 °C	70 °C	42 V	Surface Mount	1.235 V
Analog Devices Inc./Maxim Integrated DC765B															Non-Isolated						2 count	2	LT3479	Boost Inverting	600 mA	600 mA	Board	2.5 V	12 V	2.5 V	4.2 V	-5 V 7 V	DC/DC Positive and Negative
Analog Devices Inc./Maxim Integrated LT3479EDE#TRPBF	200 kHz	3.5 MHz	3 A	1	24 V	14-DFN	No	2.3 V	3 mm		4 mm	Boost	Step-Up	Negative Positive Positive or Negative	Adjustable	-40 °C	85 °C	42 V	Surface Mount	1.235 V														14-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LT3479EDE#PBF	200 kHz	3.5 MHz	3 A	1	24 V	14-DFN	No	2.3 V	3 mm		4 mm	Boost	Step-Up	Negative Positive Positive or Negative	Adjustable	-40 °C	85 °C	42 V	Surface Mount	1.235 V														14-WFDFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT3479EDE#PBF | Datasheet

R365 Reliability Data