LNBH26LS - STMicroelectronics

LNBH26LS Dual LNBS supply/controller

Intended for analog and digital DUAL satellite receiver/Sat-TV, Sat-PC cards, the LNBH26LS is a monolithic voltage regulator and IC interface, assembled in QFN24 (4x4) specifically designed to provide the 13/18 V power supply and the 22 kHz tone signaling to the LNB down-converter in the antenna dishes or to the multi-switch box. In this application field, .

Features

 Complete interface between then 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 specification (8 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
 Overload and overtemperature internal protec.