LT3840
absoluTe MaxiMuM raTings
(Note 1)
Junction Temperature Range
AUXVIN, V , EN and UVLO ....................... –0.3V to 80V
IN
LT3840E (Note 2) .............................. –40°C to 125°C
LT3840I ............................................. –40°C to 125°C
LT3840H............................................ –40°C to 150°C
LT3840MP......................................... –55°C to 150°C
Lead Temperature (Soldering, 10 sec)
PG.............................................................. –0.3V to 25V
MODE........................................................... –0.3V to 9V
+
+
–
SENSE and SENSE .................................. –0.3V to 60V
–
SENSE to SENSE ...........................................–1V to 1V
OVLO, V , FB, SYNC, TK/SS and ICTRL....... –0.3V to 6V
C
TSSOP Only ..........................................................300°C
Storage Temperature............................. –65°C to 150°C
pin conFiguraTion
TOP VIEW
TOP VIEW
1
2
AUXBST
AUXSW2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AUXSW1
PGND
AUXVIN
SYNC
RT
38 37 36 35 34 33 32
AUXVIN
NC
1
2
3
4
5
6
7
8
9
31 NC
3
INTV
CC
30 INTV
CC
4
BG
SYNC
RT
BG
29
28
5
BGRTN
BOOST
TG
BGRTN
6
TK/SS
FB
NC
27 NC
7
29
TK/SS
FB
BOOST
26
39
GND
GND
8
SW
V
C
25 TG
24 SW
23 NC
22 SENSE
21 SENSE
–
9
SENSE
PG
MODE
OVLO
UVLO
EN
V
C
+
10
11
12
13
14
SENSE
PG
ICOMP
ICTRL
IMON
GND
–
+
NC 10
MODE 11
OVLO 12
20
ICOMP
V
13 14 15 16 17 18 19
UFE PACKAGE
IN
FE PACKAGE
28-LEAD PLASTIC TSSOP
θ
= 30°C/W, θ = 10°C/W
JC
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
38-LEAD (4mm × 6mm) PLASTIC QFN
JA
θ
= 38°C/W, θ = 4°C/W
JA
JC
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT3840EFE#PBF
LT3840IFE#PBF
LT3840HFE#PBF
LT3840MPFE#PBF
LT3840EUFE#PBF
LT3840IUFE#PBF
TAPE AND REEL
PART MARKING*
LT3840FE
LT3840FE
LT3840FE
LT3840FE
3840
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3840EFE#TRPBF
LT3840IFE#TRPBF
LT3840HFE#TRPBF
LT3840MPFE#TRPBF
LT3840EUFE#TRPBF
LT3840IUFE#TRPBF
28-Lead Plastic TSSOP
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
–40°C to 125°C
–40°C to 125°C
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
38-Lead (4mm × 6mm) Plastic QFN
38-Lead (4mm × 6mm) Plastic QFN
3840
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 nonstandard 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/
3840fa
2
For more information www.linear.com/LT3840
Linear [ Linear ]
