Datasheet
LTC3860
28
3860fc
TYPICAL APPLICATIONS
Dual Output with DRMOS
FB1
COMP1
VSNSOUT
VSNSN
VSNSP
COMP2
FB2
V
DIFF1
V
OS1N
V
OS1P
I
LIM1
ISNS1P
ISNS1N
ISNS2N
ISNS2P
I
LIM2
RUN2
TRACK/SS2
FREQ
CLKIN
CLKOUT
PHSMD
PGOOD2
PWM2
V
CC
TRACK/SS1
VINSNS
I
AVG
PGOOD1
PWM1
RUN1
LTC3860
SGND
PWMEN1,2
470pF
220Ω
V
DIFF1
V
OUT2
V
CC
V
CC
V
CC
V
CIN
DISABLE
PWM
V
IN
R2J20602
REG5V BOOT
SW1
SW2
V
SWH
V
LDRV
2.2Ω
2.2Ω
5V
CGND PGND
V
CIN
PWM
DISABLE
V
IN
V
IN
R2J20602
REG5V BOOT
V
SWH
V
LDRV
CGND PGND
V
CC
5V
20k
20k
1μF
0.22μF
0.22μF
V
IN
7V TO 14V
470μF
4.7μF
4.7μF
1μF
22μF
47μF
s3
47μF
s3
330μF
s3
V
OUT1
1.2V
25A
330μF
s3
V
OUT2
1.8V
25A
3860 TA02
V
IN
0.22μF
0.3μH
0.22μF
1μF
4.7μF
4.7μF
22μF
4.7k
47pF
1000pF
470pF
0.1μF
FREQ SET FOR 600kHz
45.3k
100k
49.9k
OPEN
(OPT)
7V TO 14V IN AND 1.2V/1.8V OUT AT 25A
f
SW
= 600kHz, DCR SENSING
CH1 TRACKS CH2, CH1 USES DIFFAMP
NOTE 1: PLEASE REFER TO THE R2J20602 DATA SHEET
FOR THE MOST UP TO DATE PINOUT
NOTE 2: PLEASE REFER TO THE PIN CONFIGURATION
OF THIS DATA SHEET FOR THE LTC3860 PINOUT
OPEN
(OPT)
PWM2
V
CC
220Ω
V
OUT2
CLKOUT
RUN2
20k
10k
20k
20k
100k
49.9k
PWM1
OPEN
OPEN
(OPT)
4.7k
47pF
1000pF
RUN1
0.3μH
47Ω
2.74k
2.74k
47Ω
V
OS1P
V
OS1N