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LNBH25S 데이터시트(PDF) 24 Page - STMicroelectronics

부품명 LNBH25S
상세설명  LNB supply and control IC with step-up and IC interface
PDF  37 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH25S 데이터시트(HTML) 24 Page - STMicroelectronics

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I²C interface protocol
LNBH25S
24/37
DocID026736 Rev 2
N/A = reserved bit
All bits reset to 0 at power-on
Table 9: Data 3 (read/write register. Register address = 0X4)
Bit
Name
Value
Description
Bit 0 (LSB)
ISET
1
Current limit of LNB output (VOUT pin) set to lower current
range
(see Section 2.6: "Output current limit selection")
0
Current limit of LNB output (VOUT pin) set to default range
(see Section 2.6: "Output current limit selection")
Bit 1
ISW
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
1
Pulsed (dynamic) LNB output current limiting is deactivated
0
Pulsed (dynamic) LNB output current limiting is active
Bit 3
TIMER
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
N/A
0
Reserved. Keep to “0”
Bit 5
N/A
0
Reserved. Keep to “0”
Bit 6
N/A
0
Reserved. Keep to “0”
Bit 7(MSB)
N/A
0
Reserved. Keep to “0”
N/A = reserved bit
All bits reset to 0 at power-on
Table 10: Data 4 (read/write register. Register address = 0X5)
Bit
Name
Value
Description
Bit 0 (LSB)
EN_IMON
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
-
Reserved
Bit 2
N/A
-
Reserved
Bit 3
OLR
1
In case of overload protection activation (OLF=1), all
VSEL 1..4 bits are reset to “0” and LNB output (VOUT
pin) is disabled. VSEL bits have to be set again by the
master after the overcurrent condition is removed
(OLF=0)
0
In 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 bits setting
Bit 4
N/A
-
Reserved
Bit 5
N/A
-
Reserved



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