STEVAL-CBL015V1 STMicroelectronics

STEVAL-CBL015V1 Single LNB supply and control IC DiSEqC 1.x compliant with DSQIN 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 losses 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 Features solution for supplying/interfacing satellite LNB 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 the internal 22 kHz tone generator Selectable output current limit using an (factory trimmed) is controlled by the DSQIN pin external resistor (TTL compatible), permitting immediate Compliant with main satellite receiver output DiSEqC data encoding. A fully integrated step- voltage specifications (6 programmable up DC-DC converter allows operation with a levels) single input voltage supply source ranging from Accurate built-in 22 kHz tone generator suits 8 V to 17.5 V. widely-accepted standards 22 kHz tone waveform integrity guaranteed also at no load January 2014 DocID025829 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic STEVAL-CBL015V1 1 Schematic Figure 1: STEVAL-CBL015V1 schematic 2/4 DocID025829 Rev 1