LTC3858 Linear Technology, LTC3858 Datasheet - Page 34

• Manufacturer Part Number: LTC3858
• Description: Synchronous Step-Down Controller
• Manufacturer: Linear Technology

LTC3858
Typical applicaTions

C
C
ITH2
ITH1A
115k
R
R
115k
R
60k
FREQ
A2
C
A1
1000pF
ITH1
200pF
1000pF
57.6k
28.7k
56pF
56pF
R
R
C
C
B2
B1
F1
F2
C
R
R
ITH2A
ITH1
ITH2
C
C
1nF
SS1
SS2
1nF
3.93k
3.93k
C1
C2
200pF
0.01µF
0.01µF
SENSE1
SENSE1
V
I
SS1
I
PHSMD
CLKOUT
PLLIN/MODE
SGND
EXTV
RUN1
RUN2
FREQ
SS2
I
V
SENSE2
SENSE2
TH1
LIM
TH2
FB1
FB2
High Efficiency Dual 1V/1.2V Step-Down Converter
CC
LTC3858
+
–
–
+
PGOOD2
PGOOD1
BOOST1
BOOST2
INTV
PGND
SW1
SW2
BG1
TG1
BG2
TG2
V
CC
IN
100k INTV
100k
C
L1: SUMIDA CDEP105-0R4
L2: SUMIDA CDEP105-0R4
MTOP1, MTOP2: RENESAS RJK0305
MBOT1, MBOT2: RENESAS RJK0328
OUT1
, C
D1
D2
OUT2
CC
C
0.47µF
C
0.47µF
: SANYO 2R5TPE220M
B1
B2
C
4.7µF
INT
MTOP2
MBOT1
MTOP1
MBOT2
C
22µF
0.47µH
0.47µH
IN
L1
L2
V
12V
IN
R
R
SENSE1
SENSE2
4m
4m
3858 TA03a
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C
220µF
C
220µF
OUT1
2
OUT2
2
V
1V
8A
V
1.2V
8A
OUT2
OUT1
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