LNBH2 STMicroelectronics, LNBH2 Datasheet - Page 4

• Manufacturer Part Number: LNBH2
• Description: LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE
• Manufacturer: STMicroelectronics

LNBH21
TYPICAL APPLICATION CIRCUITS
Application Circuit for DiSEqC 1.x and Output Current < 450 mA
Full Application Circuit for Bi-directional DiSEqC 2.0 and Output Current up to 750mA
(*) Filter to be used according to EUTELSAT recommendation to implement the DiSEqC
If bidirectional DiSEqC
(**) Do not leave these pins floating if not used.
(***) To be soldered as close as possible to relative pins.
-C8 and D3,4 are needed only to protect the output pins from any negative voltage spikes during high speed voltage transitions.
4/20
12V
12V
12V
Vin
Vin
Vin
L1=22µH
L1=22µH
L1=22µH
D1
D1
D1
1N5821 or
1N5821 or
1N5821 or
STPS3L40A
STPS3L40A
STPS3L40A
12V
12V
L1=22µH
L1=22µH
Vin
Vin
F1
F1
MURATA BL01RN1-A62
MURATA BL01RN1-A62
Panasonic EXCELS A35
Panasonic EXCELS A35
Ferrite Bead Filter
Ferrite Bead Filter
suggested part number:
suggested part number:
F1
F1
F1
F1
MURATA BL01RN1-A62
MURATA BL01RN1-A62
MURATA BL01RN1-A62
MURATA BL01RN1-A62
Panasonic EXCELS A35
Panasonic EXCELS A35
Panasonic EXCELS A35
Panasonic EXCELS A35
Axial Ferrite Bead Filter
Axial Ferrite Bead Filter
Axial Ferrite Bead Filter
Axial Ferrite Bead Filter
IC2
IC2
TM
suggested part number:
suggested part number:
suggested part number:
suggested part number:
22KHz Tone Enable
22KHz Tone Enable
C2
C2
C2
C2
220µF
220µF
220µF
220µF
2.0 is not implemented it can be removed both with C8 and D4.
Rsc
Rsc
Rsc
0.05
0.05
0.05
Tone Enable
Tone Enable
STS4DNFS30L
STS4DNFS30L
C2
C2
C2
220µF
220µF
220µF
Rsc
Rsc
0.1
0.1
C1
C1
C1
220µF
220µF
220µF
F1
F1
F1
MOS
MOS
MOS
STN4NF03L
STN4NF03L
STN4NF03L
100µF
100µF
100µF
C1
C1
220µF
220µF
C9
C9
C9
F1
F1
100µF
100µF
C9
C9
C4(***)
C4(***)
C4(***)
470nF
470nF
470nF
Ceramic
Ceramic
Ceramic
C3(***)
C3(***)
C3(***)
470nF
470nF
470nF
Ceramic
Ceramic
Ceramic
C4(***)
C4(***)
470nF
470nF
Ceramic
Ceramic
DSQIN(**)
DSQIN(**)
SENSE
SENSE
Ceramic
Ceramic
C3(***)
C3(***)
470nF
470nF
GATE
GATE
SDA
SDA
SCL
SCL
Vup
Vup
IC1
IC1
IC1
SDA
SDA
SDA
DSQIN (**)
DSQIN (**)
DSQIN (**)
Vup
Vup
Vup
Gate
Gate
Gate
Sense
Sense
Sense
Vcc
Vcc
Vcc
SCL
SCL
SCL
IC1
IC1
19
19
17
17
16
16
18
18
12
12
13
13
14
14
LNBH21
LNBH21
LNBH21
D2 1N4001
D2 1N4001
D2 1N4001
GND
GND
GND
LNBH21
LNBH21
D1 1N4001
D1 1N4001
GND
GND
ADDRESS
ADDRESS
ADDRESS
(**) DETIN
(**) DETIN
(**) DETIN
DSQOUT
DSQOUT
DSQOUT
VoRX
VoRX
VoRX
EXTM
EXTM
EXTM
VoTX
VoTX
VoTX
ISEL
ISEL
ISEL
Byp
Byp
Byp
C7(***)
C7(***)
C7(***)
100nF
100nF
100nF
3
3
2
2
4
4
15
15
9
9
C8(***)
C8(***)
C8(***)
100nF
100nF
100nF
8
8
5
5
7
7
TM
2.0, (see DiSEqC
C8(***)
C8(***)
10nF
10nF
VoTX
VoTX
Byp
Byp
Address
Address
VoRX
VoRX
DSQOUT
DSQOUT
EXTM
EXTM
Floating or V>3.3V
Floating or V>3.3V
Floating or V>3.3V
ISEL
ISEL
(**) DETIN
(**) DETIN
C5
C5
C5
470nF
470nF
470nF
C6
C6
C6
10nF
10nF
10nF
D3(***)
D3(***)
D3(***)
BAT43
BAT43
BAT43
Higher current limit
Higher current limit
Higher current limit
Lower current limit
Lower current limit
Lower current limit
GND
GND
GND
C5
C5
470nF
470nF
0<V
0<V
0<V
0<V
D4(***)
D4(***)
D4(***)
BAT43
BAT43
BAT43
(*) see note
(*) see note
(*) see note
D2(***)
D2(***)
BAT43
BAT43
ADDR
ADDR
ADDR
ADDR
15 ohm
15 ohm
15 ohm
Set TTX=1
Set TTX=1
0<V
0<V
270µH
270µH
270µH
<V
<V
<V
<V
ADDR
ADDR
BYP
BYP
BYP
BYP
TM
<V
<V
to LNB
to LNB
implementation on page 8).
BYP
BYP
to LNB
to LNB
to LNB