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LT3505

1.2A, Step-Down Switching Regulator in 3mm ×3mm DFN

Linear Technology 

LT3505

ABSOLUTE MAXIMUM RATINGS

(Note 1)

Input Voltage (VIN)....................................................40V

BOOST Pin Voltage ..................................................50V

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

SHDN Pin..................................................................40V

FB Pin .........................................................................6V

VC Pin .........................................................................3V

RT Pin .........................................................................3V

Operating Temperature Range (Note 2)

LT3505E .............................................. –40°C to 85°C

LT3505I ............................................. –40°C to 125°C

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

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

PIN CONFIGURATION

TOP VIEW

BOOST 1

8 VC

SW 2

7 FB

9

VIN 3

6 RT

SHDN 4

5 GND

DD PACKAGE

8-LEAD (3mm × 3mm) PLASTIC DFN

TJMAX = 125°C, θJA = 43°C/W, θJC = 5°C/W

EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB

TOP VIEW

BOOST 1

8 VC

SW 2

VIN 3

9

7 FB

6 RT

SHDN 4

5 GND

MS8E PACKAGE

8-LEAD PLASTIC MSOP

TJMAX = 125°C, θJA = 40°C/W, θJC = 5°C/W

EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

LT3505EDD#PBF

LT3505EDD#TRPBF

LCHB

8-Lead (3mm x 3mm) Plastic DFN

LT3505IDD#PBF

LT3505IDD#TRPBF

LCHC

8-Lead (3mm x 3mm) Plastic DFN

LT3505EMS8E#PBF

LT3505EMS8E#TRPBF LTCNX

8-Lead Plastic MSOP

LT3505IMS8E#PBF

LT3505IMS8E#TRPBF LTCNY

8-Lead Plastic MSOP

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

LT3505EDD

LT3505EDD#TR

LCHB

8-Lead (3mm x 3mm) Plastic DFN

LT3505IDD

LT3505IDD#TR

LCHC

8-Lead (3mm x 3mm) Plastic DFN

LT3505EMS8E

LT3505EMS8E#TR

LTCNX

8-Lead Plastic MSOP

LT3505IMS8E

LT3505IMS8E#TR

LTCNY

8-Lead Plastic MSOP

Consult LTC Marketing for parts specified with wider operating temperature ranges.

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/

TEMPERATURE RANGE

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

TEMPERATURE RANGE

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

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