LTC3853 Linear Technology, LTC3853 Datasheet - Page 34

• Manufacturer Part Number: LTC3853
• Description: Multiphase Synchronous Step-Down Controller
• Manufacturer: Linear Technology

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LTC3853
TYPICAL APPLICATIONS
34
V
OUT1
2.5V
40A
+
R
SHORT TK/SS1, TK/SS2 AND TK/SS3 TOGETHER
ITH1
0.002Ω
5%
0.78μH
43.2k
660μF
4V
47pF
1%
3
= 3.9k, C
100Ω*
100Ω*
20k
1%
ITH1
C
P1
= 10nF, C
1000pF*
P1
Three Phase 2.5V Output High Current Step-Down Converter with R
= 470pF • 3
R
ITH1
C
ITH1
4.7μF
TG1
PGOOD12
PGOOD3
SW1
BG1
MODE/PLLIN
ILIM
SENSE1
EXTV
SENSE1
V
V
V
I
I
I
SGND
TH1
TH2
TH3
FB1
FB2
FB3
V
IN
CC
*THESE FILTER COMPONENTS NEED TO BE CLOSE TO THE IC
+
–
DRV
LTC3853
TK/SS1
FREQ/PLLFLTR
CC12
BOOST1,2,3
C
0.33μF
INTV
SENSE2
SENSE2
SENSE3
SENSE3
SS1
PGND
RUN1
RUN2
RUN3
SW2
SW3
CC
TG2
BG2
TG3
BG3
+
–
+
–
C
B1,2,3
D
B1,2,3
2.55k
0.1μF
10k
SW1,2,3
INTV
1000pF
1000pF*
CC
0.78μH
100Ω*
100Ω*
0.002Ω
5%
V
OUT1
SENSE
3853 TA05
0.78μH
100Ω*
1000pF*
100Ω*
180μF
16V
0.002Ω
5%
V
6.5V TO 14V
IN
V
OUT1
3853f