Datasheet
Application circuit LNBH23
12/32 Doc ID 13356 Rev 8
5 Application circuit
Figure 4. Typical application circuit
L1=22µH
C11
220nF
C6
470nF
Ceramic
D3 1N4001D3 1N4001
C3
100µF
C3
100µF
C5
100µF
L2
Ferrite Bead Filter
L2 suggested part number:
MURATA BL01RN1-A62
Panasonic EXCELS A35
Ferrite Bead Filter
L2 suggested part number:
MURATA BL01RN1-A62
Panasonic EXCELS A35
Tone Enable
Vin
12V
270µH
R4
15 Ohm
to LNB
C12
10nF
D2
BAT43
D2
BAT43
C13
10nF
C13
10nF
{
I
2
C Bus
SDA
SCL
DSQIN
LX
Vup
Vcc-
L
Vcc
VoRX
DETIN
VoTX
Byp
EXTM
DSQOUT
ADDR
C1
100µF
C8
220nF
Ceramic
C8
220nF
Ceramic
C7
100nF
Ceramic
C7
100nF
Ceramic
LNBH23
R2 (RSEL)
11kOhm
ISEL
TTX Enable
TTX
P-GND A-GND
C9
10µF
C9
10µF
VCTRL
R1
100Ohm
D4
BAT43
D4
BAT43
STPS130A
D1
STPS130A
D1
C4
470nF
C4
470nF
Ceramic
C10
220nF
Ceramic
C10
220nF
Ceramic
C2
100nF
Ceramic
Ceramic
L3
13/18
R3
10kOhm
Table 5. Bill of material
Component Notes
R1, R4 1/4W resistors. Refer to the typical application circuit for the relative values
R2 (RSEL), R3 1/4W resistors. Refer to the typical application circuit for the relative values
C1 25V electrolytic capacitor, 100µF or higher is suitable.
C9 10µF, >35V electrolytic capacitor
C3, C5 100µF, >25V electrolytic capacitor, ESR in the 150mΩ to 350mΩ range
C2, C4, C6, C7, C8, C10,
C11, C12, C13
>25V ceramic capacitors. Refer to the typ. appl. circuit for the relative values
D1
STPS130A or any similar schottky diode with V
RRM
>25V and I
F(AV)
higher than:
I
F(AV)
> I
OUT_MAX
x (V
UP_MAX
/V
IN_MIN
)
D2, D4 BAT43, 1N5818, or any schottky diode with I
F(AV)
> 0.2A, V
RRM
> 25 V, V
F
< 0.5 V
D3 1N4001 or equivalent
L1
22 µH Inductor with I
sat
>I
peak
where I
peak
is the boost converter peak current (see
Equation 1
)