STEVAL-CBL015V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – LNB short-circuit dynamic protection

STEVAL-CBL015V1
Single LNB supply and control IC DiSEqC 1.x compliant with
DSQIN 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 losses
• 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 the internal 22 kHz tone generator
(factory trimmed) is controlled by the DSQIN pin
(TTL compatible), permitting immediate
DiSEqC™ data encoding. 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
DocID025829 Rev 1
For further information contact your local STMicroelectronics sales
office
1/4
www.st.com