Datasheet

LT3509
2
3509fd
For more information www.linear.com/LT3509
absoluTe MaxiMuM raTings
V
IN
Pin (Note 2) ........................................................60V
BD Pin .......................................................................20V
BOOST Pins ..............................................................60V
BOOST Pins above SW .............................................30V
RUN/SS, FB, RT, SYNC pins ........................................ 6V
Operating Junction Temperature Range (Notes 3, 6)
LT3509E ............................................ –40°C to 125°C
LT3509I
............................................. –40°C to 125°C
LT3509H
............................................ –40°C to 150°C
pin conFiguraTion
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LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3509EDE#PBF LT3509EDE#TRPBF 3509 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LT3509IDE#PBF LT3509IDE#TRPBF 3509 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LT3509EMSE#PBF LT3509EMSE#TRPBF 3509 16-Lead Plastic MSOP with Exposed Pad –40°C to 125°C
LT3509IMSE#PBF LT3509IMSE#TRPBF 3509 16-Lead Plastic MSOP with Exposed Pad –40°C to 125°C
LT3509HMSE#PBF LT3509HMSE#TRPBF 3509 16-Lead Plastic MSOP with Exposed Pad –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.
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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)
MSOP Package
.................................................300°C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
FB1
RUN/SS1
BD
SYNC
RT
RUN/SS2
FB2
DA1
BOOST1
SW1
V
IN
SW2
BOOST2
DA2
TOP VIEW
DE14 PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
15
θ
JA
= 43°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
DA1
BOOST1
SW1
V
IN
V
IN
SW2
BOOST2
DA2
16
15
14
13
12
11
10
9
FB1
RUN/SS1
AGND
BD
SYNC
RT
RUN/SS2
FB2
TOP VIEW
MSE PACKAGE
16-LEAD PLASTIC MSOP
17
θ
JA
= 43°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
(Note 1)
Downloaded from Arrow.com.Downloaded from Arrow.com.