LTC3860_15 Datasheet, PDF (31/36 Pages) Linear Technology – Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing

LTC3860
TYPICAL APPLICATIONS
Dual Output—3-Channel + Single Channel, Synchronized to External Clock
V_IN
7V TO 14V
RUN1
470μF
TRACK/SS1
0.01μF
V_CC
5V
1μF
V_DIFF1
1000pF
COMP1 _VDIFF
20k
220Ω ^47pF
V_OSN
V_OSP
20k
470pF
V_CC
4.7k
V_CC
FB1
COMP1
VSNSOUT
VSNSN
VSNSP
COMP2
FB2
V_{CC IAVG1}
V_CC
100pF
100k
OPEN
PWM1 ^(OPT)
4.7μF
OPEN
(OPT)
LTC3860
RUN1
I_LIM1
ISNS1P
ISNS1N
ISNS2N
ISNS2P
I_LIM2
RUN2
49.9k
V_CC
RUN1
0.22μF
0.22μF
CLOCKIN
600kHz
SYNC INPUT
TRACK/SS1
V_CC
45.3k
PWM2
V_CC
OPEN
(OPT)
OPEN
(OPT)
2.2Ω
V_CIN V_IN REG5V BOOT
DISABLE
PWM ^{R2J20602 VSWH}
CGND V_LDRV PGND
4.7μF
5V
5V
4.7μF
CGND V_LDRV
PWM
DISABLE ^R2J20602
PGND
V_SWH
V_CIN V_IN REG5V BOOT
4.7μF _2.2Ω ^22μF
V_IN
2.2Ω
V_IN
7V TO 14V
470μF
TRACK/SS1
V_CC
5V
1μF
1000pF
V_DIFF4
V_CC
COMP1
20k
220Ω
47pF
V_OS4P
V_OS4N
10k
470pF
4.7k
V_CC
FB1
COMP1
VSNSOUT
VSNSN
VSNSP
COMP2
FB2
RUN2
0.01μF
45.3k
4.7μF
V_CC
I_AVG1
PWM3
OPEN
(OPT)
RUN1
OPEN
(OPT)
LTC3860
RUN1
I_LIM1
ISNS1P
ISNS1N
ISNS2N
ISNS2P
I_LIM2
RUN2
49.9k
0.22μF
0.22μF
49.9k
100k
V_CC
PWM4
V_CC
OPEN
(OPT)
OPEN
(OPT)
V_CIN V_IN REG5V BOOT
DISABLE
PWM ^{R2J20602 VSWH}
CGND V_LDRV PGND
4.7μF
5V
5V
4.7μF
CGND V_LDRV
PWM
DISABLE ^R2J20602
PGND
V_SWH
V_CIN V_IN REG5V BOOT
4.7μF _2.2Ω ^22μF
V_IN
0.22μF
1μF
SW1 ^0.3μH
2.3k
V_IN
22μF
2.3k
SW2 ^0.3μH
0.22μF
1μF
V_OSP
47Ω
47μF
6.3V
s6
V_OUT1
1.2V
330μF _75A
2.5V
s6
47Ω
V_OSN
V_IN
22μF
0.22μF
1μF
SW3 ^0.3μH
2.32k
2.32k
SW4 ^0.3μH
V_OS4P
47Ω
0.22μF
47μF
1μF
s3
330μF
s3
V_OUT4
1.8V
25A
47Ω
V_{OS4N 3860 TA05}
3860fc
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