LNBH25
LNB supply and control IC with step-up and I²C interface
Features
■ Complete interface between LNB and I²C bus ■ Built-in DC-DC converter for single 12 V supply
operation and high efficiency (typ.
93 % @ 0.
5 A) ■ Selectable output current limit by external resistor ■ Compliant with main satellite receivers output
voltage specification (15 programmable levels) ■ Accurate built-in 22 kHz tone generator suits widely accepted standards ■ 22 kHz tone waveform integrity guaranteed also at no load condition ■ 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 overt...