LT3509

2

3509fc

ABSOLUTE MAXIMUM RATINGS

BD Pin.......................................................................20V

BOOST Pins ..............................................................60V

BOOST Pins above SW .............................................30V

RUN/SS, FB, RT, SYNC pins........................................6V

Operating Junction Temperature Range (Notes 3, 6)

LT3509E ............................................ –40°C to 125°C

LT3509I ............................................. –40°C to 125°C

LT3509H............................................ –40°C to 150°C

PIN CONFIGURATION

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3509EDE#PBF

LT3509EDE#TRPBF

3509

14-Lead (4mm × 3mm) Plastic DFN

–40°C to 125°C

LT3509IDE#PBF

LT3509IDE#TRPBF

3509

14-Lead (4mm × 3mm) Plastic DFN

–40°C to 125°C

LT3509EMSE#PBF

LT3509EMSE#TRPBF

3509

16-Lead Plastic MSOP with Exposed Pad

–40°C to 125°C

LT3509IMSE#PBF

LT3509IMSE#TRPBF

3509

16-Lead Plastic MSOP with Exposed Pad

–40°C to 125°C

LT3509HMSE#PBF

LT3509HMSE#TRPBF

3509

16-Lead Plastic MSOP with Exposed Pad

–40°C to 150°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.

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

Lead Temperature (Soldering, 10 sec.)

MSOP Package ................................................. 300°C

1

2

3

4

5

6

7

14

13

12

11

10

9

8

FB1

RUN/SS1

BD

SYNC

RT

RUN/SS2

FB2

DA1

BOOST1

SW1

SW2

BOOST2

DA2

TOP VIEW

DE14 PACKAGE

14-LEAD (4mm × 3mm) PLASTIC DFN

15

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

1

2

3

4

5

6

7

8

DA1

BOOST1

SW1

SW2

BOOST2

DA2

16

15

14

13

12

11

10

9

FB1

RUN/SS1

AGND

BD

SYNC

RT

RUN/SS2

FB2

TOP VIEW

MSE PACKAGE

16-LEAD PLASTIC MSOP

17

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

(Note 1)