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| LTC3785-1 Datasheet, PDF (18/20 Pages) Linear Technology – 10V, High Effi ciency, Buck-Boost Controller with Power Good | |||
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LTC3785-1
TYPICAL APPLICATION
1nF
124k 205k
VIN
RUN/SS
VSENSE
VCC
ISVIN
TG1
R1
205k
R2
124k
270pF
VBST1
1.3k
1nF
12k
SW1
ISSW1
VDRV
FB
BG1
LTC3785-1
VC
RT
59k
VOUT
100k
RILSET
42.2k
RT
PGOOD
MODE
ISVOUT
TG2
VBST2
ILSET
SW2
ISSW2
CCM
BG2
GND
VIN
2.7V TO 10V
CVCC
4.7μF
9V REGULATED
WALL ADAPTER
+
Li-Ion
2.7V TO 4.2V
CMDSH-3
CA
0.22μF
CMDSH-3
CB
0.22μF
CIN
MA
22μF
MA = MB = MC = MD = 1/2 Si7940DY
L1 = WÃRTH ELECTRONICS 744311470
D1 = D2 = PMEG2020EJ
OPTIONAL
MB
D1
L1
4.7μH
MD
OPTIONAL
D2
VOUT
3.3V
3A
COUT
MC
100μF
37851 TA02
37851f
18
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