Data brief
For further information contact your local STMicroelectronics sales office.
April 2009 Doc ID 15562 Rev 1 1/4
4
STEVAL-CBL005V1
LNB power supply demonstration board based on the LNBH23
Features
■ Integrated DC-DC converter
■ Single input supply voltage: from 8 V to 15 V
■ I
2
C™ bus interface for the IC control and
diagnostics
■ Integrated 22 kHz tone generator, factory-
trimmed in accordance with widely accepted
standards
■ User-friendly graphical user interface ("LNBxxx
control suite") software included in the kit
■ Implements the LNBH23 in a QFN32 package
Description
The STEVAL-CBL005V1 LNB power supply
demonstration board implements a DC-DC
converter based on the LNBH23 device. The
LNBH23 is an LNB supply and control IC with
step-up and an I
2
C interface. It is used to power
an LNB on a dish antenna for reception of satellite
TV signals.
The LNBH23 is an integrated solution for
supplying/interfacing satellite LNB modules in
accordance with international standards.
This solution is simple, inexpensive, shows very
good performance and has a low external
component count.
The LNBH23 demonstration board includes an
I
2
C™ bus interface and an internal 22 kHz tone
generator that is factory-trimmed to comply with
widely accepted standards, and can be controlled
through the DSQIN pin (TTL compatible). This
allows immediate DiSEqC™ data encoding.
Due to the fully integrated step-up DC-DC
converter, it works with a single input voltage
supply source ranging from 8 V to 15 V.
STEVAL-CBL005V1
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