LT3579_15 datasheet(2/42 Pages) LINER

2 / 42 page

LT3579/LT3579-1

35791fa

For more information www.linear.com/LT3579

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN Voltage.................................................–0.3V to 40V

SW1/SW2 Voltage ..................................... –0.4V to 42V

RT Voltage....................................................–0.3V to 5V

SS, FB Voltage ......................................... –0.3V to 2.5V

VC Voltage ...................................................–0.3V to 2V

SHDN Voltage ............................................ –0.3V to 40V

SYNC Voltage............................................ –0.3V to 5.5V

GATE Voltage ............................................. –0.3V to 80V

(Note 1)

FE PACKAGE

20-LEAD PLASTIC TSSOP

TOP VIEW

GATE

FAULT

VIN

SW1

SYNC

SHDN

CLKOUT

SW2

GND

TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W

EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB

20 19 18 17

TOP VIEW

GND

UFD PACKAGE

20-LEAD (4mm

× 5mm) PLASTIC QFN

9 10

GATE

FAULT

VIN

SW1

SHDN

CLKOUT

SW2

TJMAX = 125°C, θJA = 34°C/W, θJC = 2.7°C/W

EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3579EFE#PBF

LT3579EFE#TRPBF

LT3579FE

20-Lead Plastic TSSOP

–40°C to 125°C

LT3579IFE#PBF

LT3579IFE#TRPBF

LT3579FE

20-Lead Plastic TSSOP

–40°C to 125°C

LT3579EUFD#PBF

LT3579EUFD#TRPBF

3579

20-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3579IUFD#PBF

LT3579IUFD#TRPBF

3579

20-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3579EFE-1#PBF

LT3579EFE-1#TRPBF

LT3579FE-1

20-Lead Plastic TSSOP

–40°C to 125°C

LT3579IFE-1#PBF

LT3579IFE-1#TRPBF

LT3579FE-1

20-Lead Plastic TSSOP

–40°C to 125°C

LT3579EUFD-1#PBF

LT3579EUFD-1#TRPBF

35791

20-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3579IUFD-1#PBF

LT3579IUFD-1#TRPBF

35791

20-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

FAULT......................................................... –0.3V to 40V

FAULT Current.....................................................±0.5mA

CLKOUT ....................................................... –0.3V to 3V

CLKOUT Current ....................................................±1mA

Operating Junction Temperature Range

LT3579E (Notes 2, 4) .........................–40°C to 125°C

LT3579I (Notes 2, 4)..........................–40°C to 125°C

Storage Temperature Range...................–65°C to 150°C

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