LNBH21 Datasheet - STMicroelectronics

LNBH21 LNB SUPPLY/CONTROLLER

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBH21 is a monolithic voltage regulator and interface IC, assembled in POWER SO-20, specifically designed to provide the 13/18V power supply and the 22KHz tone signalling to the LNB downconverter in the antenna or to .

LNBH21 LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE s s s s s s s s s s s COMPLETE INTERFACE BETWEEN LNB AND I2CTM BUS BUILT-IN DC/DC CONTROLLER FOR SINGLE 12V SUPPLY OPERATION AND HIGH EFFICIENCY (Typ. 94% @ 750mA) TWO SELECTABLE OUTPUT CURRENT LIMIT (450mA / 750mA) BOTH COMPLIANT WITH EUTELSAT AND DIRECT OUTPUT VOLTAGE SPECIFICATION ACCURATE BUILT-IN 22KHz TONE OSCILLATOR SUITS WIDELY ACCEPTED STANDARDS FAST OSCILLATOR START-UP FACILITATES DiSEqCTM ENCODING BUIL.

LNBH21 Features

* ailable (EXTM). An appropriate DC blocking capacitor must be used to couple the modulating signal source to the EXTM pin. Also in this case, the VOTX output must be

LNBH21 Datasheet (493.03 KB)