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| LTC3890-2 Datasheet, PDF (37/40 Pages) Linear Technology – 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller | |||
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LTC3890-2
TYPICAL APPLICATIONS
12V SEPIC and 3.3V Step-Down Converter
VOUT1
RB1
100k
RA1
6.98k
CITH1A
47pF
CITH1
10nF
RITH1
12.1k
CSS1
0.01μF
C1
100pF
SENSE1+
SENSE1â
VFB1
PGOOD1
PGOOD2
TG1
BG1
SW1
ITH1
BOOST1
LTC3890-2
TRACK/SS1
INTVCC
RMODE
100k
RFREQ
41.2k
CSS2
0.01μF
VOUT1
CITH2 4.7nF
RITH2
7.15k
ILIM
PHASMD
CLKOUT
PLLIN/MODE
SGND
EXTVCC
RUN1
RUN2
FREQ
VIN
INTVCC
PGND
TG2
TRACK/SS2 BOOST2
SW2
ITH2
BG2
CITH2A 47pF
RA2
31.6k
RB2
100k
VFB2
SENSE2â
C2
1nF
SENSE2+
6.8μF
L1
tt
10μH
10μH
6.8μF
D2
100Ω
M1
RSNS1
6mΩ
6.8μF
COUT
68μF
VOUT1
12V
2A
CINT
4.7μF
D1
CB2 0.1μF
+ CIN
100μF
VIN
5V TO 35V
2.2μF
x3
MTOP2
L2
3.3μH
RSENSE2
4mΩ
MBOT2
VOUT2
3.3V
10A
COUT2
470μF
M1, MBOT1, MBOT2: RJK0651DPB
L1: WÃRTH 7448709100
L2: WÃRTH 7443320330
COUT1: SANYO 16TQC68M
COUT2: SANYO 6TPE470M
D1: DFLS1100
D2: PDS560
38902 TA06
38902f
37
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