LT3694/LT3694-1

2

36941fa

ABSOLUTE MAXIMUM RATINGS

BST ...........................................................................55V

BST Above SW..........................................................25V

PGOOD......................................................................16V

BIAS, LIM2, LIM3 Pins ...............................................7V

(Note 1)

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3694EUFD#PBF

LT3694EUFD#TRPBF

3694

28-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3694IUFD#PBF

LT3694IUFD#TRPBF

3694

28-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3694EFE#PBF

LT3694EFE#TRPBF

LT3694FE

20-Lead Plastic TSSOP

–40°C to 125°C

LT3694IFE#PBF

LT3694IFE#TRPBF

LT3694FE

20-Lead Plastic TSSOP

–40°C to 125°C

LT3694-1EUFD#PBF

LT3694-1EUFD#TRPBF

36941

28-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3694-1IUFD#PBF

LT3694-1IUFD#TRPBF

36941

28-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LT3694-1EFE#PBF

LT3694-1EFE#TRPBF

LT3694FE-1

20-Lead Plastic TSSOP

–40°C to 125°C

LT3694-1IFE#PBF

LT3694-1IFE#TRPBF

LT3694FE-1

20-Lead Plastic TSSOP

–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.

9

10

TOP VIEW

UFD PACKAGE

28-LEAD (4mm

5mm) PLASTIC QFN

29

GND

11 12 13

28 27 26 25 24

14

23

6

5

4

3

2

1

EN/UVLO

SYNC (CLKOUT)

PGOOD

RT

TRK/SS1

TRK/SS2

FB2

DRV2

DA

BST

BIAS

FB1

TRK/SS3

FB3

DRV3

7

17

18

19

20

21

22

16

8

15

EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB

LT3694-1 PINOUT IS SHOWN IN PARENTHESIS

FE PACKAGE

20-LEAD PLASTIC TSSOP

1

2

3

4

5

6

7

8

9

10

TOP VIEW

20

19

18

17

16

15

14

13

12

11

EN/UVLO

SYNC(CLKOUT)

PGOOD

RT

TRK/SS1

TRK/SS2

FB2

DRV2

LIM2

SW

DA

BST

BIAS

FB1

TRK/SS3

FB3

DRV3

LIM3

21

GND

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

LT3694-1 PINOUT IS SHOWN IN PARENTHESIS

PIN CONFIGURATION

Operating Junction Temperature Range (Notes 2 and 5)

LT3694E............................................. –40°C to 125°C

LT3694I.............................................. –40°C to 125°C

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

Lead Temperature (Soldering, 10 Sec)

(TSSOP Only) ................................................... 300°C