STEVAL-CBL016V1 STMicroelectronics

STEVAL-CBL016V1 Single LNB supply and control IC DiSEqC 1.X compliant with EXTM based on the LNBH29 in a QFN16 (4x4) Data brief Low-drop post regulator and high-efficiency step-up PWM with integrated power N-MOS allowing low power loss 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 LNBH29 device used to power LNB inside dish antennas which receive satellite TV signals. The LNBH29 is an integrated solution for supplying/interfacing satellite LNB Features modules in accordance with international Complete interface between LNB and IC standards, offering a complete solution for single- bus tuner satellite receivers and good performance at Built-in DC-DC converter for single 12 V low cost using few external components. The 2 supply operation and high efficiency (typ. LNBH29 evaluation board includes an I C bus 93% 0.5 A) interface and is provided with the EXTM analog Selectable output current limit using an modulation input pin to be connected to an external resistor external 22 kHz DiSEqC tone source. The tone Compliant with main satellite receiver output output waveform depends on the characteristics voltage specifications (6 programmable of the external signal provided by the EXTM pin. levels) A fully integrated step-up DC-DC converter Accurate built-in 22 kHz tone generator suits allows operation with a single input voltage widely-accepted standards supply source ranging from 8 V to 17.5 V. 22 kHz tone waveform integrity guaranteed also at no load January 2014 DocID025825 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic STEVAL-CBL016V1 1 Schematic Figure 1: STEVAL-CBL016V1 schematic 2/4 DocID025825 Rev 1