LTC3633 Datasheet, PDF (2/28 Pages) Linear Technology – Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator

LTC3633
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_IN1, V_IN2 ................................................... –0.3V to 16V
V_IN1, V_IN2 Transient ...................................................18V
PGOOD1, PGOOD2, V_ON1, V_ON2 ................. –0.3V to 16V
BOOST1, BOOST2................................... –0.3V to 19.6V
BOOST1-SW1, BOOST2-SW2 ................... –0.3V to 3.6V
V2P5, INTV_CC, TRACKSS1, TRACKSS2 ...... –0.3V to 3.6V
ITH1, ITH2, REXT, MODE/SYNC.... –0.3V to INTV_CC + 0.3V
V_FB1, V_FB2, PHMODE................... –0.3V to INTV_CC + 0.3V
RUN1, RUN2.................................... –0.3V to V_IN + 0.3V
SW1, SW2 ....................................... –0.3V to V_IN + 0.3V
SW Source and Sink Current (DC) (Note 2) ................3A
Operating Junction Temperature Range
(Note 3).................................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
28 27 26 25 24 23
PGOOD1 1
PHMODE 2
RUN1 3
22 V_IN1
21 V_IN1
20 BOOST1
MODE/SYNC 4
RT 5
29
PGND
19 INTV_CC
18 V2P5
RUN2 6
17 BOOST2
SGND 7
16 V_IN2
PGOOD2 8
15 V_IN2
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 43°C/W
EXPOSED PAD (PIN 29) IS PGND, MUST BE SOLDERED TO PCB
TOP VIEW
ITH1 1
TRACKSS1 2
V_FB1 3
PGOOD1 4
PHMODE 5
RUN1 6
MODE/SYNC 7
RT 8
RUN2 9
SGND 10
PGOOD2 11
V_FB2 12
TRACKSS2 13
ITH2 14
29
PGND
28 V_ON1
27 SW1
26 SW1
25 V_IN1
24 V_IN1
23 BOOST1
22 INTV_CC
21 V2P5
20 BOOST2
19 V_IN2
18 V_IN2
17 SW2
16 SW2
15 V_ON2
FE PACKAGE
28-LEAD PLASTIC TSSOP
T_JMAX = 125°C, θ_JA = 25°C/W
EXPOSED PAD (PIN 29) IS PGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3633EUFD#PBF
LTC3633EUFD#TRPBF 3633
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3633IUFD#PBF
LTC3633IUFD#TRPBF 3633
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3633EFE#PBF
LTC3633EFE#TRPBF LTC3633FE
28-Lead Plastic TSSOP
–40°C to 125°C
LTC3633IFE#PBF
LTC3633IFE#TRPBF
LTC3633FE
28-Lead Plastic TSSOP
–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/
3633f
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