LT3581

2

3581fb

For more information www.linear.com/LT3581

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

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

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

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

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

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

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

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

(Note 1)

1

2

3

4

5

6

7

14

13

12

11

10

9

8

SYNC

SS

RT

SHDN

CLKOUT

SW2

SW2

FB

GATE

FAULT

SW1

SW1

TOP VIEW

DE14 PACKAGE

14-PIN (4mm

× 3mm) PLASTIC DFN

15

GND

EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB

1

2

3

4

5

6

7

8

FB

GATE

FAULT

SW1

SW1

SW1

16

15

14

13

12

11

10

9

SYNC

SS

RT

SHDN

CLKOUT

SW2

SW2

SW2

TOP VIEW

MSE PACKAGE

16-LEAD PLASTIC MSOP

17

GND

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3581EDE#PBF

LT3581EDE#TRPBF

3581

14-Lead (4mm

× 3mm) Plastic DFN

–40°C to 125°C

LT3581IDE#PBF

LT3581IDE#TRPBF

3581

14-Lead (4mm

× 3mm) Plastic DFN

–40°C to 125°C

LT3581HDE#PBF

LT3581HDE#TRPBF

3581

14-Lead (4mm

× 3mm) Plastic DFN

–40°C to 150°C

LT3581EMSE#PBF

LT3581EMSE#TRPBF

3581

16-Lead Plastic MSOP

–40°C to 125°C

LT3581IMSE#PBF

LT3581IMSE#TRPBF

3581

16-Lead Plastic MSOP

–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.

Consult LTC Marketing for information on non-standard lead based finish parts.

FAULT Current .....................................................±500µA

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

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

Operating Junction Temperature Range

LT3581E (Notes 2, 4) ......................... –40°C to 125°C

LT3581I (Notes 2, 4).......................... –40°C to 125°C

LT3581H (Notes 2, 4).........................–40°C to 150°C

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