LTC4268-1

2

42681fa

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

Low Impedance Source ......................... –0.3V to 18V

PWRGD Voltage (Note 3)

Current Fed ..........................................................5mA

PWRGD Current.....................................................10mA

FB Current..............................................................±2mA

Operating Ambient Temperature Range (Notes 4, 5)

LTC4268-1C ............................................. 0°C to 70°C

LTC4268-1I .......................................... –40°C to 85°C

Junction Temperature (Note 5) ............................. 150°C

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

(Notes 1, 2)

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

33

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

NC

PWRGD

PWRGD

NC

PG

PGDLY

SENSE+

SENSE–

UVLO

SHDN

NC

NC

SG

ENDLY

SYNC

SFST

OSC

FB

TOP VIEW

DKD32 PACKAGE

32-LEAD (7mm × 4mm) PLASTIC DFN

EXPOSED PAD (PIN 33) MUST BE SOLDERED TO

HEATSINKING PLANE THAT IS ELECTRICALLY CONNECTED TO GND

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC4268CDKD-1#PBF

LTC4268IDKD-1#PBF

LTC4268CDKD-1#TRPBF

LTC4268IDKD-1#TRPBF

42681

42681

32-Lead (7mm

× 4mm) Plastic DFN

32-Lead (7mm

× 4mm) Plastic DFN

0°C to 70°C

–40°C to 85°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC4268CDKD-1

LTC4268IDKD-1

LTC4268CDKD-1#TR

LTC4268IDKD-1#TR

42681

42681

32-Lead (7mm

× 4mm) Plastic DFN

32-Lead (7mm

× 4mm) Plastic DFN

0°C to 70°C

–40°C to 85°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.