STEVAL-CBL007V1
LNB power supply demonstration board based on the
DiSEqC 1.X-compliant LNBH23L
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 limitation via external
resistor
■
Compliant with main satellite receiver output
voltage specifications
■
Auxiliary modulation input (EXTM pin)
facilitates DiSEqCTM 1.X encoding
■
Accurate built-in 22 kHz tone generator suits
widely-accepted standards
■
Low-drop post regulator and high efficiency
step-up PWM with integrated power NMOS to
reduce power losses
■
Internal overload and over-temperature
protection with I2C diagnostic bits
■
Dynamic LNB short-circuit protection
■
RoHS compliant
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STEVAL-CBL007V1
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Description
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The STEVAL-CBL007V1 demonstration board is
intended to provide information and suggestions
on the correct use of the LNBH23L device.
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The LNBH23L is an integrated solution for
supplying/interfacing satellite LNB modules.
Simple and inexpensive, it provides good
performance while minimizing the number of
external components required.
It includes all functions needed for LNB supply
and interfacing, and is compliant with international
standards. It includes an I2C bus interface and,
due to the fully integrated step-up DC-DC
converter, functions with a single input voltage
supply from 8 V to 15 V.
August 2010
Doc ID 17669 Rev 1
For further information contact your local STMicroelectronics sales office.
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Schematic diagram
STEVAL-CBL007V1
Schematic diagram
Circuit schematic
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STEVAL-CBL007V1
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Revision history
Revision history
Table 1.
Document revision history
Date
Revision
12-Aug-2010
1
Changes
Initial release.
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Doc ID 17669 Rev 1
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STEVAL-CBL007V1
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Please Read Carefully:
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