Datasheet

LTC3869/LTC3869-2
34
38692fa
For more information www.linear.com/LTC3869
Typical applicaTions
Figure 16. 1.8V, 15A and 1.2V, 15A Supply, f
SW
= 400kHz
3869 F16
TG1
BOOST1
PGND
BG1
V
IN
INTV
CC
EXTV
CC
BG2
PGND
BOOST2
TK/SS1 I
TH1
V
FB1
SGND V
FB2
I
TH2
TK/SS2 SENSE2
+
SENSE2
–
20k
0.1µF
20k
SENSE1
–
SENSE1
+
RUN1
FREQ
MODE/PLLIN
SW1
RUN2
I
LIM
PGOOD
PGOOD
SW2
TG2
63.4k
86.6k
100Ω
100Ω
100k
20k
2.2Ω
4.7µF
0.1µF
0.1µF
LTC3869
1nF
18k
0.1µF
150pF
10µF ×2
82µF 25V ×2
1.5nF
15k
0.1µF
150pF
0.1µF
CMDSH-3
M4 RJK0330DPB M3 RJK0305DPB
M2 RJK0330DPB M1 RJK0305DPB
CMDSH-3
0.1µF
L2
0.4µH
V
OUT2
1.2V 15A V
IN
4.5V TO 20V V
OUT1
1.8V 15A
+
C
OUT1
100µF 6.3V
C
OUT2
330µF 4V ×2
+
C
OUT3
100µF 6.3V
C
OUT4
330µF 4V ×2
+
L1, L2: VITEC 59PR9875 C
OUT1
, C
OUT3
: MURATA GRM31CR60J107ME39L
C
OUT2
, C
OUT4
: SANYO 2R5TPE330M9
100Ω100Ω
0.002Ω
L1
0.4µH
0.002Ω