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LNBH26S Datasheet(PDF) 19 Page - STMicroelectronics

Part # LNBH26S
Description  Dual LNBS supply and control I2C with step-up and IC interface
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26S Datasheet(HTML) 19 Page - STMicroelectronics

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Table 8. DATA 3 (read/write register. Register address = 0X4)
Bit
Name
CH
Value
Description
Bit 0 (LSB)
ISET-A
A
1
Current limit of LNB output (VOUT pin) set to lower current
range
0
Current limit of LNB output (VOUT pin) set to default range
Bit 1
ISW-A
1
DC-DC, inductor switching current limit set to 2.5 A typ.
0
DC-DC, inductor switching current limit set to 4 A typ.
Bit 2
PCL-A
1
Pulsed (dynamic) LNB output current limiting is deactivated
0
Pulsed (dynamic) LNB output current limiting is activated
Bit 3
TIMER-A
1
Pulsed (dynamic) LNB output current TON time set to 180
ms typ.
0
Pulsed (dynamic) LNB output current TON time set to 90
ms typ.
Bit 4
ISET-B
B
1
Current limit of LNB output (VOUT pin) set to lower current
range
0
Current limit of LNB output (VOUT pin) set to default range
Bit 5
ISW-B
1
DC-DC, inductor switching current limit set to 2.5 A typ.
0
DC-DC, inductor switching current limit set to 4 A typ.
Bit 6
PCL-B
1
Pulsed (dynamic) LNB output current limiting is deactivated
0
Pulsed (dynamic) LNB output current limiting is activated
Bit 7 (MSB)
TIMER-B
1
Pulsed (dynamic) LNB output current TON time set to 180
ms typ.
0
Pulsed (dynamic) LNB output current TON time set to 180
ms typ.
Table 9. DATA 4 (read/write register. Register address = 0X5)
Bit
Name
CH
Value
Description
Bit 0 (LSB)
EN_IMON-A
A
1
IMON diagnostic function is enabled. (VOUT is set to 21 V
typ.)
0
IMON diagnostic function is disabled. Keep always at “0” if
IMON is not used
Bit 1
N/A
0
Reserved. Keep to “0”
Bit 2
0
Bit 3
OLR
A/B
1
In the case of overload protection activation (OLF=1), all
VSEL bits are reset to “0” and LNB relevant output (VOUT
pin) is disabled. The VSEL bits must be set again by the
master after the overcurrent condition is removed (OLF=0)
0
In the case of overload protection activation (OLF=1) the
LNB output (VOUT pin) is automatically enabled as soon
as the overload condition is removed (OLF=0) with the
previous VSEL bit setting
Bit 4
EN_IMON-B
B
1
IMON diagnostic function is enabled
0
IMON diagnostic function is disabled. Always keep “0” if
IMON is not used
Bit 5
N/A
0
Reserved. Keep “0”
LNBH26S
Data registers
DS8975 - Rev 5
page 19/35



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