LTC3780_12 Datasheet, PDF (25/28 Pages) Linear Technology – High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller

APPLICATIONS INFORMATION
C_SS
C_C2
C
C_C1
R_C
RR
R1
R2
R_PU
1
24
PGOOD BOOST1
2
SS
23
TG1
LTC3780
3 _SENSE+
22
SW1
4 _SENSE–
21
V_IN
5
20
I_TH
EXTV_CC
6
19
V_OSENSE INTV_CC
7
18
SGND
BG1
8
RUN
17
PGND
9
FCB
16
BG2
10
15
PLLFLTR SW2
V_{PULLUP CA}
D_A
C_F
C_VCC
R_SENSE
D_B
11
14
f_IN
PLLIN
TG2
12
13
STBYMD BOOST2
C_B
R_IN
LTC3780
D
D2
V_OUT
C_OUT
C
L
D1
B
A
C_IN
V_IN
3780 F11
Figure 11. LTC3780 Layout Diagram
PGND
C
RR
SGND
3780 F12
Figure 12. Sense Lines Layout
3780fe
25