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LNBH26LPQR Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte LNBH26LPQR
Spiegazioni elettronici  Selectable output current limit by external resistor
PDF  28 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26LPQR Scheda tecnica(HTML) 2 Page - STMicroelectronics

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Contents
LNBH26L
2/28
Doc ID 022876 Rev 1
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Application information (valid for each section A/B) . . . . . . . . . . . . . . . 4
2.1
DISEQC data encoding (DSQIN pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Data encoding by external 22 kHz tone TTL signal . . . . . . . . . . . . . . . . . . 4
2.3
Data encoding by external DiSEqC envelope control
through the DSQIN pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4
Output current limit selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5
Output voltage selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6
Diagnostic and protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7
Surge protection and TVS diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8
Power-on I²C interface reset and undervoltage lockout . . . . . . . . . . . . . . . 7
2.9
PNG: input voltage minimum detection . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.10
OLF: overcurrent and short-circuit protection and diagnostic . . . . . . . . . . . 7
2.11
OTF: thermal protection and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6
I²C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1
Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2
START and STOP condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3
Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.5
Transmission without acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7
I²C interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.1
Write mode transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2
Read mode transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3
Data registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17



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