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AN3115 Fiches technique(PDF) 11 Page - STMicroelectronics

No de pièce AN3115
Description  LNB power supply based on the LNBH23L supply and control IC with step-up and I²C interface
PDF  28 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3115 Fiches technique(HTML) 11 Page - STMicroelectronics

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AN3115
Component selection guidelines
Doc ID 16830 Rev 3
11/28
2
Component selection guidelines
The LNBH23L application schematic in Figure 6 shows the typical configuration for a single
LNB power supply.
Note:
TVS D6 diode to be used if surge protection is required (see Section 2.4).
Figure 6.
LNBH23L typical application circuit with internal tone generator
L1
22uH
C6
470nF
C3
220uF
Vin
12 V
to LNB
500 mA max
D2
BAT43
{
I
2C Bus
SDA
SCL
PDC
LX
Vup
Vcc -L
Vcc
VoRX
EXTM
ADDR
C8
220nF
LNBH23L
TTX
P-GND
A -GND
D1
STPS130A
C10
220nF
C4
470nF
VoTX
ISEL
R2 (RSEL)
15kOhm
Byp
C11
220nF
DSQIN
C15
47 nF
R9
1.5KOhm
C2
100nF
C1
100uF
D3
1N4007
D6
N.C.
L1
22uH
C6
470nF
C3
220uF
Vin
12 V
to LNB
500 mA max
D2
BAT43
{
I
2C Bus
SDA
SCL
PDC
LX
Vup
Vcc -L
Vcc
VoRX
EXTM
ADDR
C8
220nF
LNBH23L
TTX
P-GND
A -GND
D1
STPS130A
C10
220nF
C4
470nF
VoTX
ISEL
R2 (RSEL)
15kOhm
Byp
C11
220nF
DSQIN
C15
47 nF
R9
1.5KOhm
C2
100nF
C1
100uF
D3
1N4007
D6
N.C.



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