Datasheet
LTC3633A/LTC3633A-1
2
3633a1f
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
V
IN1
, V
IN2
................................................... –0.3V to 20V
PGOOD1, PGOOD2, V
ON1
, V
ON2
................. –0.3V to 18V
BOOST1, BOOST2 ...................................... –0.3V to 23V
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
(Note 1)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3633AEUFD#PBF LTC3633AEUFD#TRPBF 3633A 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AIUFD#PBF LTC3633AIUFD#TRPBF 3633A 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AEFE#PBF LTC3633AEFE#TRPBF LTC3633AFE 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AIFE#PBF LTC3633AIFE#TRPBF LTC3633AFE 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AEUFD-1#PBF LTC3633AEUFD-1#TRPBF 633A1 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AIUFD-1#PBF LTC3633AIUFD-1#TRPBF 633A1 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AEFE-1#PBF LTC3633AEFE-1#TRPBF LTC3633AFE-1 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AIFE-1#PBF LTC3633AIFE-1#TRPBF LTC3633AFE-1 28-Lead Plastic TSSOP –40°C to 125°C
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: http://www.linear.com/leadfree/
F
o
r more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
RUN1, RUN2 .................................... –0.3V to V
IN
+ 0.3V
SW1, SW2 ....................................... –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 150°C
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
= 30°C/W
EXPOSED PAD (PIN 29) IS PGND, MUST BE SOLDERED TO PCB