STEVAL-CBL012V1 Dual LNB supply and control IC DiSEqC 2.0 compliant based on the LNBH26 Data brief • Low-drop post regulator and high-efficiency step-up PWM with integrated power N-MOS allowing low power losses • LPM function (low-power mode) to reduce dissipation • 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 LNBH26 device used to power LNBs inside dish antennas which receive satellite TV signals. The LNBH26 is an Features integrated solution for supplying/interfacing satellite LNB modules in accordance with • Complete interface between LNB and I²C international standards, offering a complete bus solution for dual-tuner satellite receivers and • Built-in DC-DC converter for single 12 V good performance at low cost using few external supply operation and high efficiency (typ. components. The LNBH26 evaluation board 93% @ 0.5 A) includes an I2C bus interface and the internal • Selectable output current limit using an 22 kHz tone generator (factory trimmed) is external resistor controlled by the DSQIN pin (TTL compatible), • Compliant with main satellite receiver output permitting immediate DiSEqC™ data encoding. A voltage specifications (15 programmable fully integrated step-up DC-DC converter allows levels) operation with a single input voltage supply • Accurate built-in 22 kHz tone generator suits source ranging from 8 V to 16 V. widely-accepted standards • 22 kHz tone waveform integrity guaranteed also at no load January 2014 DocID025826 Rev 1 1/4 For further information contact your local STMicroelectronics sales www.st.com office

Schematic STEVAL-CBL012V1 1 Schematic Figure 1: STEVAL-CBL012V1 schematic 2/4 DocID025826 Rev 1

STEVAL-CBL012V1 Revision history 2 Revision history Table 1: Revision history Date Revision Changes 29-Jan-2014 1 Initial release DocID025826 Rev 1 3/4

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