LTC3633A-1_15 Datasheet, PDF (24/30 Pages) Linear Technology – Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator

LTC3633A/LTC3633A-1
TYPICAL APPLICATIONS
1.8V/2.5V 4MHz Buck Regulator
V_IN
12V
C1
22µF
×2
10pF
6.98k
220pF
R5
80.6k
V_OUT2
2.5V AT 3A
C_OUT2
22µF
L2
0.82µH ^0.1µF
R4
R3
31.6k _10k
RUN1 ^VIN2
RUN2
ITH2
V_{IN1 INTVCC}
V2P5
PHMODE
ITH1
LTC3633A
RT
BOOST2
MODE/SYNC
BOOST1
SW2
V_ON2
V_{FB2 SGND PGND}
SW1
V_ON1
V_FB1
6.98k
10pF
220pF
L1
0.1µF _0.68µH
R1
R2
12.1k ^24.3k
C2
2.2µF
V_OUT1
1.8V AT 3A
C_OUT1
47µF
3633a TA02
3.3V/1.8V Sequenced Regulator with 6V Input UVLO (V_OUT1 Enabled After V_OUT2)
V_IN
6V TO 20V
C1
47µF
×2
R5
162k
V_OUT2
3.3V AT 3A
C_OUT2
22µF
R6
R7 ^100k
154k
R8
40k
L2
1µH ^0.1µF
R4
R3
54.9k _12.1k
RUN1 ^VIN2
PGOOD2
V_{IN1 INTVCC}
ITH1
RUN2
LTC3633A
ITH2
V2P5
MODE/SYNC
PHMODE
RT
BOOST2
BOOST1
SW2
V_ON2
V_{FB2 SGND PGND}
SW1
V_ON1
V_FB1
C2
2.2µF
L1
0.1µF _0.68µH
R1
R2
12.1k ^24.3k
V_OUT1
1.8V AT 3A
C_OUT1
47µF
3633a TA03
24
For more information www.linear.com/LTC3633A
3633a1fb