LTC3785-1 Linear Technology, LTC3785-1 Datasheet - Page 18

• Manufacturer Part Number: LTC3785-1
• Description: Buck-Boost Controller
• Manufacturer: Linear Technology

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TYPICAL APPLICATION
LTC3785-1
18
124k
205k
124k
R2
R1
R
42.2k
59k
ILSET
R
V
T
OUT
12k
205k
1.3k
1nF
270pF
100k
1nF
V
RUN/SS
FB
V
RT
PGOOD
MODE
I
CCM
LSET
SENSE
C
LTC3785-1
GND
V
IN
I
V
I
SVOUT
V
I
SSW1
V
SSW2
I
SW1
SW2
BST1
BST2
SVIN
BG1
BG2
TG1
TG2
V
DRV
CC
CMDSH-3
CMDSH-3
0.22μF
C
0.22μF
A
C
B
4.7μF
C
VCC
MA
MB
MD
MC
2.7V TO 10V
V
IN
OPTIONAL
OPTIONAL
C
22μF
IN
D1
D2
L1
4.7μH
MA = MB = MC = MD = 1/2 Si7940DY
L1 = WÜRTH ELECTRONICS 744311470
D1 = D2 = PMEG2020EJ
+
C
100μF
9V REGULATED
WALL ADAPTER
OUT
Li-Ion
2.7V TO 4.2V
37851 TA02
V
3.3V
3A
OUT
37851f