ST TN100 RF, User Manual, Page: 34 / 37

Obsolete Product(s) - Obsolete Product(s)
Schematic diagrams UM0579
34/37
Figure 31. Power supply schematics
R31 1 M
Ω
C16
4.7 nF
Coilcraft: DO1608
L1
10 µH
C14 100 nF
C11 47 µF
C13 47 µF
BAT 1
C15 100 nF
1
3
2
D1
ST: BAT54CF
IL
M
FB
1
OUT
8
SHDN
5
GND
6
LX
7
LB
O
3
LB
I
2
REF
4
U5 ST: L6920DC
R23
680 K
Ω
R24
820 K
Ω
C12 100 nF
R29
120
Ω
R26
NC R27 0
Ω
R25
180 k
Ω
Power supply
PA
2
R30 0
Ω
PA
3
R28 0
Ω
S6 SW-
SPS
T
D2 ST: STPS0520Z
V
BUS
1
D–
2
D+
3
NC
4
GND
5
SHLD
6
SHLD
7
SHLD
8
SHLD
9
CN4
GM: USB-MINI
B F
SMD
BAT 2
GM: B-N360
2/3AAA-NEX
2
3 1
S5
GM: P-
B143
5V0_JTAG
R36
470
Ω
1 2
LD
6
red
BAT3
2x AAA
battery
holder
2.5 V
C23 10 nF
V
IN
1
GND
2
B
ypass
4
OUT
5
Inhibit
3
U7
L
D3985M25R
C24
100 nF
Tantal (A,B) C25 2.2 µF
R42
1.5 K
Ω
n.b.
I/O1
1
GND
2
I/O2
3
I/O2
4
V
BUS
5
I/O1
6
U8
USBLC6-2P6
n.b.
V
BUS
USBDN USBDP
2.5 V
V
BUS
AM00272