Datasheet

LTC3850/LTC3850-1
32
38501fc
TYPICAL APPLICATIONS
Figure 18. 1.5V/15A, 1.2V/15A Core-I/O Converter with Sense Resistor Synchronized at 400kHz
C4
1000pF
C2 0.01µF
TK/SS1 I
TH1
V
FB1
V
FB2
I
TH2
TK/SS2 SENSE2
–
BOOST1
BG1
V
IN
INTV
CC
BG2
PGND
BOOST2
SENSE1
+
RUN1
FREQ/
PLLFLTR
MODE/
PLLIN
SW1 TG1SENSE1
–
PGOOD
C1 1000pF
M4 RJK0301DPB M3 RJK0305DPB
L2
0.4µH
R
SENSE1
0.002Ω
R
SENSE2
0.002Ω
R9 100Ω
R10 100Ω
R5 10k
PLLIN
400kHz
R1 17.8k
RV
IN
2.2Ω
C
SS1
0.1µF
C6
100pF
C7
1000pF
C
B1
0.1µF
D3
CMDSH-3
M2 RJK0301DPB M1 RJK0305DPB
D4
CMDSH-3
CV
CC
4.7µF
CV
IN
1µF
C
B2
0.1µF
R20
100Ω
L1
0.4µH
V
OUT1
1.5V/15A
V
OUT2
1.2V/15A
C5
1000pF
R22 100Ω
RPG 100k
R2 20k
R12
5.9k
R3 20k R4 10k
C11
1000pF
R18
5.9k
C12
100pF
C
SS2
0.1µF
LTC3850
38501 F18
SENSE2
+
RUN2SGND
I
LIM
SW2 TG2
EXTV
CC
PGOOD
L1, L2: VITEC 59PR9875 C
OUT1
, C
OUT2
: 2R5TPE330M9
PGND GND
C
IN
180µF
V
IN
7V TO 14V
C
OUT1
330µF 2.5V 2X
+
C
OUT2
330µF 2.5V 2X
+
+
10µF 2x