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LNBH26LS 数据表(PDF) 23 Page - STMicroelectronics

部件名 LNBH26LS
功能描述  Dual LNBS supply and control IC with step-up and IC interface
PDF  33 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LNBH26LS 数据表(HTML) 23 Page - STMicroelectronics

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LNBH26LS
I²C interface protocol
DocID025504 Rev 1
23/33
Bit
Name
CH
Value
Description
0
In case of thermal protection activation (OTF=1) the LNB output
(VOUT pin) is automatically enabled as soon as the
overtemperature condition is removed (OTF=0) with the previous
VSEL bits setting.
Bit 7
(MSB)
COMP
-
1
DC-DC converter compensation: set to use very low E.S.R.
capacitors or ceramic caps on VUP pin.
-
0
DC-DC converter compensation: set to use standard electrolytic
capacitors on VUP pin.
7.4
Status registers
The STATUS 1, 2 registers can only be addressed to read mode and provide the
diagnostic functions described in the following tables.
Table 10: STATUS 1 (read register. Register address = 0X0)
Bit
Name
CH
Value
Description
Bit 0
(LSb)
OLF-
A
A
1
VOUT pin overload protection has been triggered (IOUT > I LIM). Refer
to Table 8: "DATA 3 (read/write register. Register address =
0X4)"for the overload operation and PCL settings.
0
No overload protection has been triggered to the VOUT pin (IOUT <
ILIM).
Bit 1
OLF-
B
B
1
V OUTpin overload protection has been triggered (IOUT > I LIM). Refer
to Table 8: "DATA 3 (read/write register. Register address =
0X4)"for the overload operation and PCL settings.
0
No overload protection has been triggered to VOUT pin (IOUT < I LIM).
Bit 2
N/A
-
-
Reserved.
Bit 3
N/A
-
-
Reserved.
Bit 4
N/A
-
-
Reserved.
Bit 5
N/A
-
-
Reserved.
Bit 6
OTF
A/B
1
Junction overtemperature is detected, TJ > 150 °C (typ.).See also
THERM bit setting in Table 9: "DATA 4 (read/write register.
Register address = 0X5)".
0
Junction overtemperature not detected, TJ<135 °C (typ.).TJ is
below thermal protection threshold.
Bit 7
(MSb)
PNG
A/B
1
Input voltage (VCC pin) lower than LPD minimum thresholds. Refer
to Table 12: "Electrical characteristics of section A/B".
0
Input voltage (VCC pin) higher than LPD thresholds. Refer to Table
12: "Electrical characteristics of section A/B".
N/A = Reserved bit.
All bits reset to “0” at power-on.



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