LNBH24

LNBH24 Dual LNB supply and control IC with step-up and I²C interface Features ■ ■ Complete interface between LNBS and I²C bus Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93%@0.5 A) resistor www.DataSheet4U.com ■ Selectable output current limit through external ■ ■ Compliant with main satellite receivers output voltage specification New accurate built-in 22 kHz tone generator meets widely accepted standards (patent pending) Fast oscillator start-up facilitates DiSEqC™ encoding Built-in 22 kHz tone detector supports bidirectional DiSEqC™ 2.0 Very low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS allow low power losses Two output pins suitable for bypassing the output R-L filter and avoiding tone distortion (RL filter as per DiSEqC™ 2.0 specs, see typ. application circuits) Overload and over-temperature internal protections with I²C diagnostic bits Output voltage and output current level diagnostic feedback by I²C bits LNB short circuit dynamic protection +/- 4 kV ESD tolerant on output power pins PowerSSO-36 (ePad) ■ ■ ■ ■ monolithic voltage regulator and interface IC, assembled in PowerSSO-36 ePad, specifically designed to provide the 13/18 V power supply and the 22 kHz tone signalling for two independent LNB down-converters in the antenna dishes and/or multi-switch box. In this application field, it offers a dual tuner STBs with extremely low component count, low power dissipation together with ...