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LNBH25LS Scheda tecnica(PDF) 1 Page - STMicroelectronics

Il numero della parte LNBH25LS
Spiegazioni elettronici  LNB supply and control IC with step-up and I²C interface
PDF  30 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH25LS Scheda tecnica(HTML) 1 Page - STMicroelectronics

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March 2016
DocID026753 Rev 3
1/30
This is information on a product in full production.
www.st.com
LNBH25LS
LNB supply and control IC with step-up and I²C interface
Datasheet - production data
Features
Complete interface between LNB and I²C
bus
Built-in DC-DC converter for single 12 V
supply operation and high efficiency (typ.
93% @ 0.5 A)
Selectable output current limit by external
resistor
Compliant with main satellite receiver output
voltage specifications (15 programmable
levels)
Accurate built-in 22 kHz tone generator suits
widely accepted standards
22 kHz tone waveform integrity guaranteed
at no-load condition
Low drop post regulator and high efficiency
step-up PWM with integrated power NMOS
allowing low power losses
Overload and overtemperature internal
protections with I²C diagnostic bits
LNB short-circuit dynamic protection
+/- 4 kV ESD tolerant on output power pins
Applications
STB satellite receivers
TV satellite receivers
PC card satellite receivers
Description
Intended for analog and digital satellite
receivers/Sat-TV and Sat-PC cards, the
LNBH25LS is a monolithic voltage regulator and
interface IC, assembled in QFN24L (4x4 mm)
specifically designed to provide 13/18 V power
supply and 22 kHz tone signaling to the LNB
down-converter in the antenna dish or to the
multi-switch box. In this application field, it offers
a complete solution with extremely low
component count and low power dissipation
together with a simple design and I²C standard
interface.
Table 1: Device summary
Order code
Package
Packing
LNBH25LSPQR
QFN24L (4x4 mm)
Tape and
reel


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