LT3509 LINER [Linear Technology], LT3509 Datasheet - Page 2

• Manufacturer Part Number: LT3509
• Description: Dual 36V, 700mA Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

ABSOLUTE MAXIMUM RATINGS
LT3509
(Note 1)
V
BD Pin .......................................................................20V
BOOST Pins ..............................................................60V
BOOST Pins above SW .............................................30V
RUN/SS, FB, R
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LT3509EDE#PBF
LT3509IDE#PBF
LT3509EMSE#PBF
LT3509IMSE#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
2
IN
Pin (Note 2) ........................................................60V
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
T
BOOST1
BOOST2
, SYNC pins ........................................6V
14-LEAD (4mm 3mm) PLASTIC DFN
SW1
SW2
DA1
DA2
V
IN
θ
JA
TAPE AND REEL
LT3509EDE#TRPBF
LT3509IDE#TRPBF
LT3509EMSE#TRPBF
LT3509IMSE#TRPBF
1
2
3
4
5
6
7
= 43°C/W, θ
DE14 PACKAGE
TOP VIEW
15
JC
= 4.3°C/W
14
13
12
11
10
9
8
FB1
RUN/SS1
BD
SYNC
R
RUN/SS2
FB2
T
http://www.linear.com/leadfree/
PART MARKING*
3509
3509
3509
3509
http://www.linear.com/tapeandreel/
Operating Junction Temperature Range (Notes 3, 5)
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)
PACKAGE DESCRIPTION
14-Lead (4mm × 3mm) Plastic DFN
14-Lead (4mm × 3mm) Plastic DFN
16-Lead Plastic MSOP with Exposed Pad
16-Lead Plastic MSOP with Exposed Pad
LT3509E ............................................. –40°C to 125°C
LT3509I .............................................. –40°C to 125°C
MSE16 Package ................................................ 300°C
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
BOOST1
BOOST2
SW1
SW2
DA1
DA2
V
V
IN
IN
θ
1
2
3
4
5
6
7
8
16-LEAD PLASTIC MSOP
JA
= 43°C/W, θ
MSE PACKAGE
TOP VIEW
17
JC
= 4.3°C/W
16
15
14
13
12
11
10
9
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
FB1
RUN/SS1
AGND
BD
SYNC
R
RUN/SS2
FB2
T
3509f