Figure 12.
Voltage regulators
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
3.3V
1.2V
5.0V_SR
5.0V_SR
C85
22uF
C92
1.5uF
C86
47uF
10V
1206
R6
180K
C90
390pF
R9
9K1
R8
51K
C87
470nF
R7
430K
R5 1M
U3
L5970AD
VCC
8
SYNC
2
COMP
4
G
N
D
7
IN
H
3
V
R
E
F
6
F
B
5
OUT
1
C93
47uF
L4
56uH
C94
100pF
R11
5K49
C88
8.2nF
C91
22pF
50V
U2
A6986
RST
1
VBIAS
16
LX
14
LX
13
PGND
12
VCC
2
SS/INH
3
SYNCH
4
FSW
5
MLF
6
COMP
7
DELAY
8
VIN
15
PGND
11
SGND
10
FB
9
E
X
P
1
7
C95
18nF
C89
68nF
STPS2L25U
DS1
R10
6K2
C84
470nF
L3
3.9uH
UM2789
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Rev 1
page 25
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UM2789
Schematic