LT3518
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V
IN
,
SHDN,
PWM, TGEN (Note 3)..............................40V
SW, ISP ISN, TG ........................................................45V
,
TG Pin Below ISP Pin ................................................10V
FB, SYNC, SS, CTRL ...................................................6V
V
C
, R
T
, V
REF
.................................................................3V
Operating Junction Temperature Range (Notes 2, 4)
LT3518E ............................................. –40°C to 125°C
LT3518I .............................................. –40°C to 125°C
LT3518H ............................................ –40°C to 150°C
Storage Temperature Range
QFN.................................................... –65°C to 125°C
TSSOP ............................................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
TSSOP .............................................................. 300°C
PIN CONFIGURATION
TOP VIEW
TGEN
ISN
ISP
TG
V
IN
SHDN
12 FB
17
11 V
C
10 CTRL
9
5
V
REF
6
R
T
7
SYNC
8
SS
PWM
V
REF
R
T
SYNC
SS
PWM
CTRL
1
2
3
4
5
6
7
8
17
GND
TOP VIEW
16 SW
15 SW
14 TG
13 ISP
12 ISN
11 TGEN
10 FB
9
V
C
16 15 14 13
SW 1
SW 2
V
IN
3
SHDN
4
UF PACKAGE
16-LEAD (4mm
×
4mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 36°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
FE PACKAGE
16-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 40°C/W,
θ
JC(PAD)
= 10°C/W
ORDER INFORMATION
LEAD FREE FINISH
LT3518EUF#PBF
LT3518IUF#PBF
LT3518EFE#PBF
LT3518IFE#PBF
LT3518HFE#PBF
TAPE AND REEL
LT3518EUF#TRPBF
LT3518IUF#TRPBF
LT3518EFE#TRPBF
LT3518IFE#TRPBF
LT3518HFE#TRPBF
PART MARKING*
3518
3518
3518FE
3518FE
3518HFE
PACKAGE DESCRIPTION
16-Lead (4mm
×
4mm) Plastic QFN
16-Lead (4mm
×
4mm) Plastic QFN
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–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.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
3518fb
2
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