Figure 11.
Voltage regulators
5.0V_SR
C66
15uF
C68
15uF
C73
27pF
L4
4.7uH
R18
249K
R19
86K6
C58
22uF
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
EXP
17
C60
47uF
10V
1206
1.2V
L3 3.9uH
GND
R11 1M
GND
GND
GND
GND
C59
470nF
GND
GND
C61
470nF
GND
GND
C62
8.2nF
C63
68nF
GND
GND
5.0V_SR
GND
GND
R16
1M
GND
GND
GND
GND
C67
470nF
GND
C69
470nF
GND
GND
C70
8.2nF
C71
68nF
GND
GND
GND
R14
430K
R13
180K
R12 0R
R17 0R
3.3V
U3
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
EXP
17
C72
470pF
R20
43K
GND
C65
22pF
50V
C64
390pF
R15
51K
UM2725
-
Rev 1
page 27/38
UM2725
Schematic