LT3579IFE-1#PBF datasheet, PDF

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LT3579IFE-1#PBF: DescriptionIC REG MULT CONFIG INV 20TSSOP; CategoryPower/power management The power supply circuit; File Size567KB，42 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LT3579IFE-1#PBF Overview

IC REG MULT CONFIG INV 20TSSOP

LT3579IFE-1#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	TSSOP
package instruction	HTSSOP, TSSOP20,.25
Contacts	20
Manufacturer packaging code	FE
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	16 V
Minimum input voltage	2.5 V
Nominal input voltage	5 V
JESD-30 code	R-PDSO-G20
JESD-609 code	e3
length	6.5 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	20
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Maximum output current	9.4 A
Package body material	PLASTIC/EPOXY
encapsulated code	HTSSOP
Encapsulate equivalent code	TSSOP20,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1.2 mm
surface mount	YES
Switch configuration	BOOST
Maximum switching frequency	2800 kHz
technology	BIPOLAR
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	4.4 mm
Base Number Matches	1

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LT3579/LT3579-1

6A Boost/Inverting

DC/DC Converter with Fault Protection

FEATURES

DESCRIPTION

The

3579

is a PWM DC/DC converter with built-in fault

protection features to aid in protecting against output shorts,

input/output overvoltage, and overtemperature conditions.

The part consists of a 42V master switch, and a 42V slave

switch that can be tied together for a total current limit of 6A.

The LT3579 is ideal for many local power supply designs. It

can be easily configured in Boost, SEPIC, Inverting, or Flyback

configurations, and is capable of generating 12V at 1.7A, or

–12V at 1.2A from a 5V input. In addition, the LT3579’s slave

switch allows the part to be configured in high voltage, high

power charge pump topologies that are very efficient and

require fewer components than traditional circuits.

The LT3579’s switching frequency range can be set between

200kHz and 2.5MHz. The part may be clocked internally at

a frequency set by the resistor from the RT pin to ground,

or it may be synchronized to an external clock. A buffered

version of the clock signal is driven out of the CLKOUT

pin, and may be used to synchronize other compatible

switching regulator ICs to the LT3579.

The LT3579 also features innovative

SHDN

pin circuitry that

allows for slowly varying input signals and an adjustable

undervoltage lockout function. Additional features such

as frequency foldback and soft-start are integrated. The

LT3579 is available in 20-lead TSSOP and 20-pin 4mm

5mm QFN packages.

Efficiency and Power Loss

100

EFFICIENCY (%)

0.1µF

47pF

2.2nF

35791 TA01

6A, 42V Combined Power Switch

Output Short Circuit Protection

Wide Input Range: 2.5V to 16V Operating,

40V Maximum Transient

LT3579-1: Dual-Phase Capable

Master/Slave (3.4A/2.6A) Switch Design

User Configurable Undervoltage Lockout

Easily Configurable as a Boost, SEPIC, Inverting, or

Flyback Converter

Low V

CESAT

Switch: 250mV at 5.5A (Typical)

Can Be Synchronized to External Clock

Can Synchronize other Switching Regulators

High Gain

SHDN

Pin Accepts Slowly Varying Input

Signals

20-Lead TSSOP and 20-Pin 4mm

5mm QFN

Packages

APPLICATIONS

Local Power Supply

Vacuum Fluorescent Display (VFD) Bias Supplies

TFT-LCD Bias Supplies

Automotive Engine Control Unit (ECU) Power

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 7579816.

TYPICAL APPLICATION

1MHz, 5V to 12V Boost Converter with Output Short Circuit Protection

2.2µH

10µF

GATE

LT3579

CLKOUT

TEMPERATURE

MONITOR

OUT

12V

1.7A

130k

6.3k

10µF

3.2

2.8

2.4

POWER LOSS (W)

2.0

1.6

1.2

0.8

0.4

0.25 0.5 0.75 1 1.25 1.5 1.75

LOAD CURRENT (A)

SW1 SW2

22µF

100k

200k

FAULT

SHDN

SYNC GND

86.6k

35791 TA02

35791fa

For more information

www.linear.com/LT3579

LT3579IFE-1#PBF Related Products

	LT3579IFE-1#PBF	LT3579EFE#PBF	LT3579EFE#TRPBF	LT3579IUFD#TRPBF	LT3579IUFD-1#TRPBF	LT3579IFE#TRPBF	LT3579IFE-1#TRPBF	LT3579IFE#PBF
Description	IC REG MULT CONFIG INV 20TSSOP	IC reg multi config sync 20tssop	IC REG MULT CONFIG INV 20TSSOP	IC REG MULT CONFIG INV ADJ 20QFN	IC REG MULT CONFIG INV ADJ 20QFN	IC REG MULT CONFIG INV 20TSSOP	IC REG MULT CONFIG INV 20TSSOP	IC REG MULT CONFIG INV 20TSSOP
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	TSSOP	TSSOP	TSSOP	QFN	QFN	TSSOP	TSSOP	TSSOP
package instruction	HTSSOP, TSSOP20,.25	HTSSOP, TSSOP20,.25	HTSSOP, TSSOP20,.25	HVQCCN, LCC20,.16X.2,20	HVQCCN, LCC20,.16X.2,20	HTSSOP, TSSOP20,.25	HTSSOP, TSSOP20,.25	HTSSOP, TSSOP20,.25
Contacts	20	20	20	20	20	20	20	20
Manufacturer packaging code	FE	FE	FE	UFD	UFD	FE	FE	FE
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V
Minimum input voltage	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V
Nominal input voltage	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V
JESD-30 code	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20	R-PQCC-N20	R-PQCC-N20	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
JESD-609 code	e3	e3	e3	e3	e3	e3	e3	e3
length	6.5 mm	6.5 mm	6.5 mm	5 mm	5 mm	6.5 mm	6.5 mm	6.5 mm
Humidity sensitivity level	1	1	1	1	1	1	1	1
Number of functions	1	1	1	1	1	1	1	1
Number of terminals	20	20	20	20	20	20	20	20
Maximum operating temperature	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-40 °C	-	-	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Maximum output current	9.4 A	9.4 A	9.4 A	9.4 A	9.4 A	9.4 A	9.4 A	9.4 A
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HTSSOP	HTSSOP	HTSSOP	HVQCCN	HVQCCN	HTSSOP	HTSSOP	HTSSOP
Encapsulate equivalent code	TSSOP20,.25	TSSOP20,.25	TSSOP20,.25	LCC20,.16X.2,20	LCC20,.16X.2,20	TSSOP20,.25	TSSOP20,.25	TSSOP20,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	CHIP CARRIER	CHIP CARRIER	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	225	225	225	NOT SPECIFIED	225	NOT SPECIFIED	225
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.2 mm	1.2 mm	1.2 mm	0.8 mm	0.8 mm	1.2 mm	1.2 mm	1.2 mm
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
Switch configuration	BOOST	BOOST	BOOST	BOOST	BOOST	BOOST	BOOST	BOOST
Maximum switching frequency	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz
technology	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR
Temperature level	AUTOMOTIVE	OTHER	OTHER	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	NO LEAD	NO LEAD	GULL WING	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.65 mm	0.65 mm	0.5 mm	0.5 mm	0.65 mm	0.65 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	QUAD	QUAD	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
width	4.4 mm	4.4 mm	4.4 mm	4 mm	4 mm	4.4 mm	4.4 mm	4.4 mm
Base Number Matches	1	1	1	1	1	1	1	1

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