LTC3618 Datasheet, PDF (2/24 Pages) Linear Integrated Systems – Dual 4MHz, 3A Synchronous Buck Converter for DDR Termination

LTC3618
ABSOLUTE MAXIMUM RATINGS (Notes 1, 10)
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
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
PIN CONFIGURATION
TOP VIEW
PHASE 1
FB2 2
ITH2 3
VDDQIN 4
SGND 5
PV_IN2 6
PV_IN2 7
SW2 8
SW2 9
RUN2 10
RUN1 11
RT 12
25
PGND
24 MODE/SYNC
23 ITH1
22 FB1
21 TRACK/SS1
20 SV_IN
19 PV_IN1
18 PV_IN1
17 SW1
16 SW1
15 PGOOD1
14 VTTR
13 PGOOD2
FE PACKAGE
24-LEAD PLASTIC TSSOP
T_JMAX = 125°C, θ_JA = 33°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
TOP VIEW
24 23 22 21 20 19
FB1 1
ITH1 2
MODE/SYNC 3
PHASE 4
FB2 5
ITH2 6
25
PGND
18 PGOOD1
17 VTTR
16 PGOOD2
15 RT
14 RUN1
13 RUN2
7 8 9 10 11 12
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 46.9°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
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 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/
3618fb
2