LNBH25L STMicroelectronics, LNBH25L Datasheet - Page 12

• Manufacturer Part Number: LNBH25L
• Description: LNB supply and control IC with step-up and IA?C interface
• Manufacturer: STMicroelectronics

Typical application circuits
5
12/28
Typical application circuits
Figure 6.
Table 5.
Component
R1 (RSEL)
DiSEqC
Envelope
DiSEqC
22KHz
C1, C2
C4, C7
C3
C5
D1
D3
D2
L1
Vin
12V
or
DiSEqC 1.x application circuit
Typical application circuit bill of material
TTL
TTL
SMD resistor. Refer to
> 25 V electrolytic capacitor, 100 µF is suitable.
From 470 nF to 2.2 µF ceramic capacitor. Higher values allow lower DC-DC noise.
From 100 nF to 220 nF ceramic capacitor. Higher values allow lower DC-DC noise.
220 nF ceramic capacitors.
STPS130A or similar schottky diode.
BAT54, BAT43, 1N5818, or any low power schottky diode with I
V
1N4001-07, S1A-S1M, or any similar general purpose rectifier.
10 µH inductor with I
D1
L1
C1
RRM
> 25 V, V
R1 (RSEL)
C2
C4
I
2
F
C Bus
C3
< 0.5 V. To be placed as close as possible to V
Doc ID 022634 Rev 2
{
sat
22
21
17
8
6
9
3
7
Table 12
> I
Vup
ISEL
LX
DSQIN
SDA
Vcc
ADDR
SCL
peak
where I
P-GND
and ISEL pin description in
LNBH25L
4
D2
peak
A-GND
Notes
15
is the boost converter peak current.
Vout
Byp
20
16
C5
Table 2
D3
C7
F
OUT
(AV) > 0.2 A,
pin.
LNBH25L
AM10462v1
to LNB