Datasheet
LTC3633A-2/LTC3633A-3
2
3633a23f
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
PV
IN1
, PV
IN2
, SV
IN
...................................... –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
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-2#PBF LTC3633AEUFD-2#TRPBF 633A2 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AIUFD-2#PBF LTC3633AIUFD-2#TRPBF 633A2 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AEFE-2#PBF LTC3633AEFE-2#TRPBF LTC3633AFE-2 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AIFE-2#PBF LTC3633AIFE-2#TRPBF LTC3633AFE-2 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AEUFD-3#PBF LTC3633AEUFD-3#TRPBF 633A3 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AIUFD-3#PBF LTC3633AIUFD-3#TRPBF 633A3 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3633AEFE-3#PBF LTC3633AEFE-3#TRPBF LTC3633AFE-3 28-Lead Plastic TSSOP –40°C to 125°C
LTC3633AIFE-3#PBF LTC3633AIFE-3#TRPBF LTC3633AFE-3 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 ............................................. –0.3V to SV
IN
+ 0.3V
RUN2 ......................................................... –0.3V to 20V
SW1, SW2 ..................................... –0.3V to PV
IN
+ 0.3V
Operating Junction Temperature Range
(Notes 3, 4) ............................................ –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
PV
IN1
PV
IN1
SV
IN
BOOST1
INTV
CC
BOOST2
PV
IN2
PV
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
PV
IN1
PV
IN1
SV
IN
BOOST1
INTV
CC
BOOST2
PV
IN2
PV
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