Datasheet
LTC3633
2
3633fc
For more information www.linear.com/LTC3633
absoluTe MaxiMuM raTings
V
IN1
, V
IN2
................................................... –0.3V to 16V
V
IN1
, V
IN2
Transient ................................................... 18V
PGOOD1, PGOOD2, V
ON1
, V
ON2
.................. –0.3V to 16V
BOOST1, BOOST2 ....................................–0.3V to 19.6V
BOOST1-SW1, BOOST2-SW2 .................... –0.3V to 3.6V
V2P5, INTV
CC
, TRACKSS1, TRACKSS2 ...... –0.3V to 3.6V
ITH1, ITH2, RT, MODE/SYNC ........ –0.3V to INTV
CC
+ 0.3V
V
FB1
, V
FB2
, PHMODE. ..................–0.3V to INTV
CC
+ 0.3V
RUN1, RUN2 .................................... –0.3V to V
IN
+ 0.3V
Operating Junction Temperature Range
(Notes 2, 3)
............................................ –40°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
(Note 1)
9 10
TOP VIEW
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
11 12 13
28 27 26 25 24
14
23
6
5
4
3
2
1
PGOOD1
PHMODE
RUN1
MODE/SYNC
RT
RUN2
SGND
PGOOD2
V
IN1
V
IN1
BOOST1
INTV
CC
V2P5
BOOST2
V
IN2
V
IN2
V
FB1
TRACKSS1
ITH1
V
ON1
SW1
SW1
V
FB2
TRACKSS2
ITH2
V
ON2
SW2
SW2
7
17
18
19
20
21
22
16
8
15
29
PGND
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 29) IS PGND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
FE PACKAGE
28-LEAD PLASTIC TSSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ITH1
TRACKSS1
V
FB1
PGOOD1
PHMODE
RUN1
MODE/SYNC
RT
RUN2
SGND
PGOOD2
V
FB2
TRACKSS2
ITH2
V
ON1
SW1
SW1
V
IN1
V
IN1
BOOST1
INTV
CC
V2P5
BOOST2
V
IN2
V
IN2
SW2
SW2
V
ON2
29
PGND
T
JMAX
= 125°C, θ
JA
= 25°C/W
EXPOSED PAD (PIN 29) IS PGND, MUST BE SOLDERED TO PCB
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3633EUFD#PBF LTC3633EUFD#TRPBF 3633
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3633IUFD#PBF LTC3633IUFD#TRPBF 3633
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3633EFE#PBF LTC3633EFE#TRPBF LTC3633FE 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633IFE#PBF LTC3633IFE#TRPBF LTC3633FE 28-Lead Plastic TSSOP –40°C to 125°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/