LT3952

2

3952f

pin conFiguraTion

absoluTe MaxiMuM raTings

EN/UVLO ..................................................................42V

OVLO ........................................................................12V

SW, ISP, ISN, TG .......................................................60V

IVINP-IVINN.....................................................–1V to 3V

VC, SS, ISMON, IVINCOMP.........................................3V

Operating Junction Temperature Range (Notes 2, 3)

LT3952E/LT3952I .............................. –40°C to 125°C

LT3952H ............................................ –40°C to 150°C

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

Lead Temperature (Soldering, 10 sec)...................300°C

(Note 1)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

TOP VIEW

FE PACKAGE

28-LEAD PLASTIC TSSOP

28

27

26

25

24

23

22

21

20

19

18

17

16

15

GND

SW

SW

SW

IVINN

IVINP

EN/UVLO

OVLO

SYNC/SPRD

GND

VC

RT

GND

ISP

ISN

TG

ISMON

IVINCOMP

OPENLED

SHORTLED

PWM

SS

CTRL

FB

DIM

29

GND

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

orDer inForMaTion

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3952EFE#PBF

LT3952EFE#TRPBF

LT3952FE

28-Lead Plastic TSSOP

–40°C to 125°C

LT3952IFE#PBF

LT3952IFE#TRPBF

LT3952FE

28-Lead Plastic TSSOP

–40°C to 125°C

LT3952HFE#PBF

LT3952HFE#TRPBF

LT3952FE

28-Lead Plastic TSSOP

–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.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/