ltc3853euj Linear Technology Corporation, ltc3853euj Datasheet - Page 33

• Manufacturer Part Number: ltc3853euj
• Description: Triple Output, Multiphase Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
V
OUT1
1.2V
30A
+
CHANNEL 1: R
CHANNEL 2: I
CHANNEL 3: R
0.002Ω
5%
0.47μH
660μF
2.5V
47pF
10k
1%
2
100Ω*
100Ω*
TK/SS1 AND TK/SS2 SHORTED TOGETHER
TH1
20k
1%
ITH1
ITH3
C
P1,3
AND I
= 10k, C
= 13k, C
TH2
1000pF*
ITH1
ITH3
SHORTED TOGETHER,
= 1500pF, C
= 1500pF, C
R
ITH1,3
C
ITH1,3
P1
P3
4.7μF
Dual 1.2V/2.5V High Current Step-Down Converter with R
= 220pF
= 330pF
TG1
PGOOD12
PGOOD3
SW1
BG1
MODE/PLLIN
ILIM
SENSE1
EXTV
SENSE1
V
I
V
SGND
TH1,2,3
FB1
FB3
TK/SS1
V
IN
CC
+
–
DRV
LTC3853
C
0.22μF
*THESE FILTER COMPONENTS NEED TO BE CLOSE TO THE IC
SS1
FREQ/PLLFLTR
CC12
BOOST1,2,3
TK/SS3
INTV
SENSE2
SENSE2
SENSE3
SENSE3
RUN1,3
PGND
RUN2
SW2
SW3
V
CC
TG2
BG2
TG3
BG3
C
0.1μF
FB2
SS3
+
–
+
–
C
B1,2,3
D
2.55k
B1,2,3
10k
0.1μF
SW1,2,3
1000pF*
INTV
CC
1000pF
100Ω*
0.47μH
100Ω*
200k
0.002Ω
5%
SENSE
V
OUT1
3853 TA04
LTC3853
20k
1%
1000pF*
0.78μH
100Ω*
100Ω*
43.2k
180μF
16V
1%
+
V
6.5V TO 14V
33
IN
0.002Ω
5%
660μF
4V
V
2.5V
15A
3853f
OUT3