Datasheet

LTC3861-1
35
38611fa
For more information www.linear.com/LTC3861-1
Dual-Output Converter: Triple Phase + Single Phase with DrMOS,
Synchronized to an External 500kHz Clock
Typical applicaTions
C
OUT2
330µF
× 6
2.5V
V
OUT1
1V/75A
C
OUT1
100µF × 6
6.3V
C
OUT4
330µF
× 3
2.5V
V
OUT2
1.8V/25A
C
OUT3
100µF × 2
6.3V
34k
V
CC
38611 TA05
53.6k
3.48k
3.3nF
LTC3861-1
FB1
COMP1
VSNSP
VSNSN
VSNSOUT
COMP2
FB2
RUN1
I
LIM1
SGND
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
I
LIM2
RUN2
V
CC
SS1
VINSNS
CONFIG
I
AVG
PGOOD1
PWMEN1
PWM1
SS2 FREQ CLKIN CLKOUT PHSMD PGOOD2 PWMEN2 PWM2
RUN1
RUN1
V
CC
V
CC
V
OUT1
V
OUT2
V
CC
5V
100k
100pF
100pF
280Ω
3.3nF
150pF
20k
30.1k
0.1µF
1µF
V
IN
7V TO 14V
SS1
CLKIN
500kHz EXTERNAL
SYNC INPUT
SS1
SS1
VSWH
PGND
FDMF6707B
BOOT PHASE
CGND
V
CC
2.2µF
16V
1Ω
0.22µF
L1
0.47µH
L2
0.47µH
10k
VSWH
PGND
FDMF6707B
BOOT PHASE
CGND
V
CC
2.2µF
16V
1Ω
0.22µF
10k
0.22µF
0.22µF
2.87k
2.87k
V
CC
34k 100k
2.1k
1.5nF
LTC3861-1
FB1
COMP1
VSNSP
VSNSN
VSNSOUT
COMP2
FB2
RUN1
I
LIM1
SGND
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
I
LIM2
RUN2
V
CC
SS1
VINSNS
CONFIG
I
AVG
PGOOD1
PWMEN1
PWM1
SS2 FREQ CLKIN CLKOUT PHSMD PGOOD2 PWMEN2 PWM2
RUN1
RUN2
V
CC
5V
280Ω
3.3nF
100pF
10k
1µF
V
IN
VSWH
PGND
FDMF6707B
BOOT PHASE
CGND
V
CC
2.2µF
16V
1Ω
0.22µF
L3
0.47µH
L4
0.47µH
10k
VSWH
PGND
FDMF6707B
BOOT PHASE
CGND
V
CC
2.2µF
16V
1Ω
0.22µF
10k
0.22µF
0.22µF
2.87k
2.87k
0.1µF
V
CC
10k
V
IN
2.2µF
16V
10k
V
IN
2.2µF
16V
C
IN5
22µF × 2
16V
C
IN3
22µF × 2
16V
C
IN4
22µF × 2
16V
10k
V
IN
2.2µF
16V
10k
V
IN
2.2µF
16V
C
IN2
22µF × 2
16V
V
IN
DISB
PWM
VDRV
VCIN
SMOD
V
IN
DISB
PWM
VDRV
VCIN
SMOD
V
IN
DISB
PWM
VDRV
VCIN
SMOD
V
IN
DISB
PWM
VDRV
VCIN
SMOD
C
IN1
180µF
C
OUT2
, C
OUT4
: SANYO 2R5TPE330M9
C
OUT1
, C
OUT3
: MURATA GRM32ER60J107ME20
L1, L2, L3, L4 : WÜRTH ELEKTRONIK 744355147
4.99k
53.6k
53.6k