Datasheet
LTC3618
2
3618fc
For more information www.linear.com/LTC3618
absoluTe MaxiMuM raTings
PV
IN1
, PV
IN2
Voltages .................................. –0.3V to 6V
SV
IN
Voltage ................................................ –0.3V to 6V
SW1 Voltage .............................–0.3V to (PV
IN1
+ 0.3V)
SW2 Voltage ..............................–0.3V to (PV
IN2
+ 0.3V)
RUN1 Voltage .............................. –0.3V to (SV
IN
+ 0.6V)
All Other Pins ............................................... –0.3V to 6V
(Notes 1, 10)
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
FE PACKAGE
24-LEAD PLASTIC TSSOP
24
23
22
21
20
19
18
17
16
15
14
13
PHASE
FB2
ITH2
VDDQIN
SGND
PV
IN2
PV
IN2
SW2
SW2
RUN2
RUN1
RT
MODE/SYNC
ITH1
FB1
TRACK/SS1
SV
IN
PV
IN1
PV
IN1
SW1
SW1
PGOOD1
VTTR
PGOOD2
25
PGND
T
JMAX
= 125°C, θ
JA
= 33°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
24 23 22 21 20 19
7 8 9
TOP VIEW
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
FB1
ITH1
MODE/SYNC
PHASE
FB2
ITH2
PGOOD1
VTTR
PGOOD2
RT
RUN1
RUN2
TRACK/SS1
SV
IN
PV
IN1
PV
IN1
SW1
SW1
VDDQIN
SGND
PV
IN2
PV
IN2
SW2
SW2
25
PGND
T
JMAX
= 125°C, θ
JA
= 46.9°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3618EFE#PBF LTC3618EFE#TRPBF LTC3618FE 24-Lead Plastic TSSOP –40°C to 125°C
LTC3618IFE#PBF LTC3618IFE#TRPBF LTC3618FE 24-Lead Plastic TSSOP –40°C to 125°C
LTC3618EUF#PBF LTC3618EUF#TRPBF 3618 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LTC3618IUF#PBF LTC3618IUF#TRPBF 3618 24-Lead (4mm × 4mm) Plastic QFN –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 LT C
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/
Operating Junction Temperature
Range (Note 2) ....................................... –40°C to 125°C
Storage Temperature.............................. –65°C to 150°C
Lead Soldering Temperature (TSSOP) ..................300°C
Reflow Peak Body Temperature (QFN) .................. 260°C