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LNBH26PQR Datasheet(PDF) 1 Page - STMicroelectronics

Part # LNBH26PQR
Description  Dual LNBS supply and control IC with step-up and I짼C interface
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26PQR Datasheet(HTML) 1 Page - STMicroelectronics

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February 2012
Doc ID 022771 Rev 1
1/38
38
LNBH26
Dual LNBS supply and control IC with step-up and I²C interface
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 receivers output
voltage specification (15 programmable levels)
■ Accurate built-in 22 kHz tone generator suits
widely accepted standards
■ 22 kHz tone waveform integrity guaranteed
also at no load condition
■ Low drop post regulator and high efficiency
step-up PWM with integrated power N-MOS
allowing low power losses
■ LPM function (low power mode) to reduce
dissipation
■ Overload and overtemperature internal
protection 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 dual satellite
receivers/Sat-TV, and Sat-PC cards, the LNBH26
is a monolithic voltage regulator and interface IC,
assembled in QFN24 4x4 specifically designed to
provide the 13/18 V power supply and the 22 kHz
tone signalling to the LNB down-converter in the
antenna dishes or to the multi-switch box. In this
application field, it offers a complete solution for
dual tuner satellite receivers with extremely low
component count, low power dissipation together
with simple design and I²C standard interfacing.
QFN24 (4 x 4 mm)
Table 1.
Device summary
Order code
Package
Packaging
LNBH26PQR
QFN24 (4 x 4)
Tape and reel
www.st.com


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