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LNBH25 数据表(PDF) 21 Page - STMicroelectronics

部件名 LNBH25
功能描述  Selectable output current limit by external resistor
PDF  34 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LNBH25 数据表(HTML) 21 Page - STMicroelectronics

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LNBH25
I²C interface protocol
Doc ID 022433 Rev 4
21/34
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.
Refer to
Section 2.6 in Application Information section.
0
Current Limit of LNB output (VOUT pin) set to default range.
Refer to
Section 2.6 in Application Information section.
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 activated
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"
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 overload protection activation (OLF=1), all VSEL 1..4 bits are reset to “0”
and LNB 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 case of overload protection activation (OLF=1) the LNB output (VOUT pin) is
automatically enabled as soon as the overload conditions is removed (OLF=0)
with the previous VSEL bits setting.
Bit 4
N/A
-
Reserved
Bit 5
N/A
-
Reserved



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