LT3597

2

3597f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

BOOST1-3.................................................................85V

BOOST Pin Above SW Pin........................................ 25V

BIAS, FAULT..............................................................25V

FB1-3, CTRL1-3, PWM1-3, SYNC ...............................6V

Operating Junction Temperature Range

(Notes 2, 3)........................................–40°C to 125°C

Maximum Junction Temperature........................... 125°C

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

(Note 1)

18 19 20 21

TOP VIEW

53

GND

UHG PACKAGE

VARIATION: UHG52(39)

52-LEAD (5mm

× 8mm) PLASTIC QFN

22 23 24 25 26

51 50

48

46

44

37

39

41

43

7

6

4

2

BST1

SW1

DA1

FB1

EN/UVLO

CTRLM

RT

DA3

SW3

BST3

BIAS

FB3

FB2

CTRL1

CTRL2

CTRL3

PWM1

PWM2

PWM3

SYNC

35

34

33

32

31

30

29

28

27

9

11

12

13

14

15

16

17

EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3597EUHG#PBF

LT3597EUHG#TRPBF

3597

52-Lead (5mm

× 8mm) Plastic QFN

–40°C to 125°C

LT3597IUHG#PBF

LT3597IUHG#TRPBF

3597

52-Lead (5mm

× 8mm) 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.

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