STEVAL-CBL012V1 STMicroelectronics

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 IC 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 IC 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 2 93% 0.5 A) includes an I C 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 www.st.com For further information contact your local STMicroelectronics sales office Schematic STEVAL-CBL012V1 1 Schematic Figure 1: STEVAL-CBL012V1 schematic 2/4 DocID025826 Rev 1