Datasheet

LT3479
2
3479fc
ABSOLUTE MAXIMUM RATINGS
SW, L, V
S
Voltages ................................................... 42V
V
IN
, SHDN Voltages ................................................. 24V
FBP, FBN, V
REF
, R
T
, V
C
Voltages ................................. 2V
Junction Temperature .......................................... 125°C
(Note 1)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
GND
GND
SS
V
C
FBN
FBP
V
REF
SW
SW
L
V
S
V
IN
R
T
SHDN
TOP VIEW
15
DE14 PACKAGE
14-LEAD (4mm s 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 15) IS PGND (MUST BE SOLDERED TO PCB)
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
SW
SW
L
V
S
V
IN
R
T
SHDN
GND
GND
GND
GND
SS
V
C
FBN
FBP
V
REF
17
T
JMAX
= 125°C, θ
JA
= 38°C/W
EXPOSED PAD (PIN 17) IS PGND (MUST BE SOLDERED TO PCB)
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3479EDE#PBF LT3479EDE#TRPBF 3479
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LT3479EFE#PBF LT3479EFE#TRPBF 3479EFE 16-Lead Plastic TSSOP –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3479EDE LT3479EDE#TR 3479
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LT3479EFE LT3479EFE#TR 3479EFE 16-Lead Plastic TSSOP –40°C to 85°C
Consult LTC Marketing for parts specifi ed 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 specifi cations, go to:
http://www.linear.com/tapeandreel/
Operating Temperature Range (Note 2).... –40°C to 85°C
Storage Temperature Range ................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP .............................................................. 300°C