LT3958

2

3958f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

SW ............................................................................84V

SYNC ..........................................................................8V

VC, SS.........................................................................3V

SENSE1, SGND .................. Internally Connected to GND

SENSE2..................................................................±0.3V

FBX ................................................................. –6V to 6V

Operating Temperature Range

(Note 2) ............................................. –40°C to 125°C

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

Storage Temperature Range................... –65°C to 125°C

(Note 1)

12 13 14

TOP VIEW

37

SGND

38

SW

UHE PACKAGE

36-LEAD (5mm

6mm) PLASTIC QFN

15 16 17

36 35 34 33 32 31 30

21

23

24

25

27

28

8

6

4

3

2

1

NC

NC

SENSE2

SGND

SENSE1

SW

SW

NC

EN/UVLO

SGND

SGND

SW

SW

20

9

10

EXPOSED PAD (PIN 37) IS SGND, MUST BE SOLDERED TO SGND PLANE

EXPOSED PAD (PIN 38) IS SW, MUST BE SOLDERED TO SW PLANE

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3958EUHE#PBF

LT3958EUHE#TRPBF

3958

36-Lead (5mm

× 6mm) Plastic QFN

–40°C to 125°C

LT3958IUHE#PBF

LT3958IUHE#TRPBF

3958

36-Lead (5mm

× 6mm) 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.