Datasheet
LTC3735
2
3735fa
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (PV
CC
) ....................... 7V to –0.3V
Topside Driver Voltages (BOOST1,2)
......... 38V to –0.3V
Switch Voltage (SW1, 2)
............................... 32V to –5V
Boosted Driver Voltages
(BOOST1-SW1, BOOST2-SW2) ............... 7V to –0.3V
DPRSLPVR, STP_CPUB, MCH_PG, PGOOD,
RDPRSLP, RDPSLP, RBOOT Voltages
......... 5V to –0.3V
RUN/SS, PSIB, FREQSET Voltages
.............7V to –0.3V
VID0-VID5 Voltages
....................................5V to –0.3V
V
FB
, Voltage ................................................ 2V to –0.3V
V
OA
+
, V
OA
–
............................................... 3.6V to –0.3V
(Note 1)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
V
FB
DPRSLPVR
FREQSET
PSIB
V
OA
+
V
OA
–
OAOUT
STP_CPUB
SGND
SENSE1
+
SENSE1
–
SENSE2
+
SENSE2
–
RDPRSLP
RDPSLP
RUN/SS
I
TH
RBOOT
MCH_PG
PGOOD
BOOST1
TG1
SW1
BOOST2
TG2
SW2
PV
CC
BG1
PGND
BG2
VID5
VID4
VID3
VID2
VID1
VID0
T
JMAX
= 125°C, θ
JA
= 85°C/W
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (7mm × 5mm) PLASTIC QFN
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1FREQSET
PSIB
V
OA
+
V
OA
–
OAOUT
STP_CPUB
SGND
SENSE1
+
SENSE1
–
SENSE2
+
SENSE2
–
RDPRSLP
NC
BOOST2
TG2
SW2
PV
CC
BG1
PGND
BG2
VID5
VID4
VID3
VID2
DPRSLPVR
V
FB
MCH_PG
PGOOD
BOOST1
TG1
SW1
NC
RDPSLP
RUN/SS
I
TH
RBOOT
VID0
VID1
23
22
21
20
9
10
11
12
T
JMAX
= 125°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS SIGNAL GROUND, MUST BE CONNECTED TO PCB AND SGND
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3735EG#PBF LTC3735EG#TRPBF LTC3735 36-Lead Plastic SSOP –40°C to 85°C
LTC3735EUHF#PBF LTC3735EUHF#TRPBF LTC3735
38-Lead (7mm × 5mm) Plastic QFN
–40°C to 85°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/
Peak Gate Drive Current <1µs
(TG1, TG2, BG1, BG2)
.................................................5A
Operating Ambient Temperature Range
(Note 2)
................................................... –40°C to 85°C
Junction Temperature (Note 3)
............................. 125°C
Storage Temperature Range
SSOP ................................................. –65°C to 150°C
QFN .................................................... –65°C to 125°C
QFN Reflow Peak Body Temperature
.................... 260°C
Lead Temperature (Soldering, 10 sec)
.................. 300°C