STEVAL-CBL014V1 STMicroelectronics

STEVAL-CBL014V1 Dual LNB supply and control IC DiSeqC 1.x compliant based on the LNBH26L Data brief 22 kHz tone waveform integrity guaranteed also at no load 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 LNBH26L device used to power LNB inside dish antennas which receive satellite TV signals. The LNBH26L is an integrated solution for supplying/interfacing Features 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 good performance at low cost using few external Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. components. The LNBH26L evaluation board 2 includes an I C bus interface and the internal 93% 0.5 A) 22 kHz tone generator (factory trimmed) is Selectable output current limit using an external resistor controlled by the DSQIN pin (TTL compatible), permitting immediate DiSEqC data encoding. A Compliant with main satellite receiver output fully integrated step-up DC-DC converter allows voltage specifications (8 programmable operation with a single input voltage supply levels) source ranging from 8 V to 16 V. Accurate built-in 22 kHz tone generator suits widely-accepted standards January 2014 DocID025828 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic STEVAL-CBL014V1 1 Schematic Figure 1: STEVAL-CBL014V1 schematic 2/4 DocID025828 Rev 1