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LNBH23L Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte LNBH23L
Spiegazioni elettronici  Selectable output current limit by external resistor
PDF  25 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH23L Scheda tecnica(HTML) 2 Page - STMicroelectronics

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Contents
LNBH23L
2/25
Doc ID 15335 Rev 4
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
DiSEqC™ data encoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
DiSEqC™ 1.X implementation by EXTM pin . . . . . . . . . . . . . . . . . . . . . . . 5
2.3
DiSEqC™ 1.X implementation with VOTX and EXTM pin connection . . . . 5
2.4
PDC optional circuit for DiSEQC™ 1.X applications using VOTX
signal on to EXTM pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5
I²C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6
Output voltage selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7
Diagnostic and protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8
Over-current and short circuit protection and diagnostic . . . . . . . . . . . . . . 6
2.9
Thermal protection and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.10
Output current limit selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5
Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6
I²C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1
Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2
Start and stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.3
Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.5
Transmission without acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7
LNBH23L software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1
Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.2
System register (SR, 1 byte) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3
Transmitted data (I²C bus write mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4
Diagnostic received data (I²C read mode) . . . . . . . . . . . . . . . . . . . . . . . . 17



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