LNBH25LS LNB supply/controller

LNBH25LS LNB supply/controller

Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH25LS is a monolithic voltage regulator and interface IC, assembled in QFN24L (4x4 mm) specifically designed to provide 13/18 V power supply and 22 kHz tone signaling to the LNB down-converter in the antenna dish or .

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 receiver output voltage specifications (15 programmable levels)
 Accurate built-in 22 kHz tone generator suits widely accepted standards
 22 kHz tone waveform integrity guaranteed at no-load condition
 Low drop post regulator and high efficiency step-up PWM with integrated power NMOS allowing low power losses
 Overload and overtemperature internal protections wi.