STEVAL-CBL016V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – LNB short-circuit dynamic protection

STEVAL-CBL016V1
Single LNB supply and control IC DiSEqC 1.X compliant with
EXTM based on the LNBH29 in a QFN16 (4x4)
Data brief
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 using an
external resistor
• Compliant with main satellite receiver output
voltage specifications (6 programmable
levels)
• Accurate built-in 22 kHz tone generator suits
widely-accepted standards
• 22 kHz tone waveform integrity guaranteed
also at no load
• Low-drop post regulator and high-efficiency
step-up PWM with integrated power N-MOS
allowing low power loss
• Overload and overtemperature internal
protection with I²C diagnostic bits
• LNB short-circuit dynamic protection
• RoHS compliant
Description
This product evaluation board implements a DC-
DC converter based on the LNBH29 device used
to power LNB inside dish antennas which receive
satellite TV signals. The LNBH29 is an integrated
solution for supplying/interfacing satellite LNB
modules in accordance with international
standards, offering a complete solution for single-
tuner satellite receivers and good performance at
low cost using few external components. The
LNBH29 evaluation board includes an I²C bus
interface and is provided with the EXTM analog
modulation input pin to be connected to an
external 22 kHz DiSEqC tone source. The tone
output waveform depends on the characteristics
of the external signal provided by the EXTM pin.
A fully integrated step-up DC-DC converter
allows operation with a single input voltage
supply source ranging from 8 V to 17.5 V.
January 2014
DocID025825 Rev 1
For further information contact your local STMicroelectronics sales
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