STEVAL-CBL013V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Selectable output current limit using an external resistor

STEVAL-CBL013V1
Single LNB supply and control IC DiSEqC 1.x compliant based
on the LNBH25L
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 (8 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 LNBH25L device
used to power LNB inside dish antennas which
receive satellite TV signals. The LNBH25L 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 LNBH25L 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 16 V.
January 2014
DocID025827 Rev 1
For further information contact your local STMicroelectronics sales
office
1/4
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