lnbh23qtr STMicroelectronics, lnbh23qtr Datasheet - Page 25

• Manufacturer Part Number: lnbh23qtr
• Description: Lnbs Supply And Control Ic With Step-up And I??c Interface
• Manufacturer: STMicroelectronics

Figure 26. DC/DC Converter efficiency vs
Figure 28. DSQIN tone enable transient
LNB
DSQIN
OUT
100
100
90
90
80
80
70
70
60
60
50
50
40
40
-10
-10
V
EN=TTX=1, TEN=0
CC
=12V
EN=VSEL=LLC=1
EN=VSEL=LLC=1
0
0
temperature
response
10
10
20
20
30
30
T [°C]
T [°C]
40
40
50
50
60
60
V
V
CC
CC
=12V, I
=12V, I
70
70
O
O
=750mA
=750mA
80
80
90
90
Figure 27. 22 kHz tone waveform
Figure 29. DSQIN tone disable transient
LNB
LNB
DSQIN
OUT
OUT
V
EN=TEN=TTX=1
CC
=12V
response
V
EN=TTX=1, TEN=0
CC
=12V
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