ltc3858-2 Linear Technology Corporation, ltc3858-2 Datasheet - Page 38

• Manufacturer Part Number: ltc3858-2
• Description: Ltc3858-2 - Low Iq, Dual 2-phase Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

LTC3858-2
TYPICAL APPLICATIONS
38
High Efficiency Dual 1V/1.2V Step-Down Converter with Inductor DCR Current Sensing
1000pF
1000pF
115k
C
R
C
R
115k
R
65k
ITH1
FREQ
ITH2
A2
A1
28.7k
R
3.93k
R
3.93k
57.6k
56pF
56pF
R
R
C
C
ITH1
ITH2
B2
B1
F1
F2
0.1μF
0.1μF
C
0.01μF
0.01μF
C
200pF
220pF
C
C
ITH1A
ITH2A
C1
C2
SS1
SS2
V
I
SS1
I
PHASMD
CLKOUT
PLLIN/MODE
SGND
EXTV
I
SENSE1
SENSE1
RUN1
RUN2
FREQ
SS2
V
SENSE2
SENSE2
TH1
LIM
TH2
FB1
FB2
CC
LTC3858-2
R
+
–
–
+
S1
1.18k
R
1.18k
S2
PGOOD2
PGOOD1
BOOST1
BOOST2
INTV
PGND
SW1
SW2
BG1
TG1
BG2
TG2
V
CC
IN
C
L1, L2: VISHAY IHL P2525CZERR47M06
MTOP1, MTOP2: RENESAS RJK0305
MBOT1, MBOT2: RENESAS RJK0328
100k
100k
OUT1
, C
D1
D2
OUT2
INTV
: SANYO 2R5TPE220M
C
0.47μF
C
0.47μF
B1
B2
CC
C
4.7μF
INT
MBOT1
MTOP1
MTOP2
MBOT2
C
22μF
IN
0.47μH
0.47μH
V
12V
L1
L2
38582 TA06
IN
C
220μF
C
220μF
OUT1
2
OUT2
2
V
1.2V
8A
V
1V
8A
OUT2
OUT1
38582f