Datasheet Linear Technology LT3579

Manufacturer	Linear Technology
Series	LT3579

6A Boost/Inverting DC/DC Converter with Fault Protection

Datasheets

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PDF, 589 Kb, File uploaded: Sep 18, 2017

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Packaging

	LT3579EFE#PBF	LT3579EFE#TRPBF	LT3579EUFD#PBF	LT3579EUFD#TRPBF	LT3579IFE#PBF	LT3579IFE#TRPBF	LT3579IUFD#PBF	LT3579IUFD#TRPBF
N	1	2	3	4	5	6	7	8
Package	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	4x5 QFN-20 Package Outline Drawing	4x5 QFN-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	4x5 QFN-20 Package Outline Drawing	4x5 QFN-20 Package Outline Drawing
Package Code	FE	FE	UFD	UFD	FE	FE	UFD	UFD
Package Index	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1711	05-08-1711	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1711	05-08-1711
Pin Count	20	20	20	20	20	20	20	20

Parametrics

Parameters / Models	LT3579EFE#PBF	LT3579EFE#TRPBF	LT3579EUFD#PBF	LT3579EUFD#TRPBF	LT3579IFE#PBF	LT3579IFE#TRPBF	LT3579IUFD#PBF	LT3579IUFD#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A	DC1514A,DC1661A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no
Features	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency	Output Short Circuit Protection, PolyPhase, External Synchronization, Resistor Set Frequency
Frequency, kHz	2500	2500	2500	2500	2500	2500	2500	2500
Frequency Adjust Range	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz
Frequency Sync Range	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz	200kHz - 2.5MHz
Integrated Inductor	no	no	no	no	no	no	no	no
Isupply, mA	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Over Voltage Protection, V	40	40	40	40	40	40	40	40
Polyphase	no	no	no	no	no	no	no	no
Switch Current, A	7.5	7.5	7.5	7.5	7.5	7.5	7.5	7.5
Synchronous	no	no	no	no	no	no	no	no
Topology	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting	Boost, Sepic, Flyback, Inverting
Topology 1	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic	Boost, Inverting, Sepic
Vin Max, V	16	16	16	16	16	16	16	16
Vin Min, V	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Vin Min Startup, V	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Vout Max, V	42	42	42	42	42	42	42	42
Vout Maximum	42V	42V	42V	42V	42V	42V	42V	42V
Vout Min, V	1.215	1.215	1.215	1.215	1.215	1.215	1.215	1.215
Vswitch Max, V	42	42	42	42	42	42	42	42

Eco Plan

	LT3579EFE#PBF	LT3579EFE#TRPBF	LT3579EUFD#PBF	LT3579EUFD#TRPBF	LT3579IFE#PBF	LT3579IFE#TRPBF	LT3579IUFD#PBF	LT3579IUFD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT3579-1

Articles

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Two High Power Monolithic Switching Regulators Include Integrated 6A, 42V or 3.3A, 42V Power Switches &mdash LT Journal
PDF, 1.8 Mb, File published: Jan 18, 2011
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Two High Power Monolithic Switching Regulators Include
Integrated 6A, 42V or 3.3A, 42V Power Switches,
Built-in Fault Protection and Operation up to 2.5MHz
Matthew Topp and Joshua Moore Power supply designers looking to shrink applications and simplify layout often turn to
monolithic switching regulators. Monolithics simplify power supply layout by including
the power switch on the dieвЂ”no external FETs or precision sense resistors are needed.
Monolithics can also operate at substantially higher switching frequencies than their
controller-only counterparts, thus reducing the size and number of external passive
components. The benefits of monolithic regulators are clear, but they traditionally have one
major limitation: as the required power level goes up, the likelihood of finding a suitable
monolithic regulator diminishes. Two new high power monolithics, the LT3579 and LT3581,
solve this problem by integrating 6A (42V) and 3.3A (42V) power switches, respectively.
The LT3579 and LT3581 are highly flexible parts and can be configured in
boost, SEPIC, inverting, or flyback configurations. They also offer many unique
performance and fault protection features. When configured as high power
boost converters, these parts can survive
output overloads with only a few additional external components. They can
also be configured to provide hot-plug
and reverse input voltage protection.
In addition, a novel master and slave
power switch design allows high voltage
charge pump circuits to be made with low
power dissipation and few components. …

Model Line

Series: LT3579 (8)

LT3579EFE#PBF LT3579EFE#TRPBF LT3579EUFD#PBF LT3579EUFD#TRPBF LT3579IFE#PBF LT3579IFE#TRPBF LT3579IUFD#PBF LT3579IUFD#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Inverting Regulators | LCD/CCD/OLED Bias | SEPIC Regulators | Flyback, Forward and Isolated Controllers
Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost