LT3990

2

3990p

BOOST Pin Voltage ...................................................75V

BOOST Pin Above SW Pin.........................................30V

FB, RT Voltage.............................................................6V

PG, BD Voltage .........................................................30V

(Note 1)

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3990EDDB#PBF

LT3990EDDB#TRPBF

LFCZ

10-Lead (3mm

× 2mm) Plastic DFN

–40°C to 125°C

LT3990IDDB#PBF

LT3990IDDB#TRPBF

LFCZ

10-Lead (3mm

× 2mm) Plastic DFN

–40°C to 125°C

LT3990EMS#PBF

LT3990EMS#TRPBF

LTFDB

10-Lead Plastic MSOP

–40°C to 125°C

LT3990IMS#PBF

LT3990IMS#TRPBF

LTFDB

10-Lead Plastic MSOP

–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.

ABSOLUTE MAXIMUM RATINGS

TOP VIEW

11

DDB PACKAGE

10-LEAD (3mm

2mm) PLASTIC DFN

FB

EN

GND

GND

RT

PG

BD

BOOST

SW

6

8

7

9

10

5

4

2

3

1

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

1

2

3

4

5

FB

EN

GND

GND

10

9

8

7

6

RT

PG

BD

BOOST

SW

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

PIN CONFIGURATION

Operating Junction Temperature Range (Note 2)

LT3990E............................................. –40°C to 125°C

LT3990I.............................................. –40°C to 125°C

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

Lead Temperature (Soldering, 10 sec)

MS Only............................................................ 300°C