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

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

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.