LNBEH21 Datasheet (STMicroelectronics) - LNB SUPPLY AND CONTROLLER

LNBEH21, LNB SUPPLY AND CONTROLLER

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBEH21 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

LNBEH21 LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE s COMPLETE INTERFACE BETWEEN LNB AND I2CTM BUS s BUILT-IN DC/DC CONTROLLER FOR SINGLE 12V SUPPLY OPERATION AND HIGH EFFICIENCY (Typ.

94% @ 750mA) s TWO SELECTABLE OUTPUT CURRENT LIMIT (450mA / 750mA) s ACCURATE BUILT-IN 22KHz TONE PowerSO-20 OSCILLATOR SUITS WIDELY ACCEPTED STANDARDS ) s FAST OSCILLATOR START-UP FACILITATES t(s DiSEqCTM ENCODING s BUILT-IN 22KHz TONE DETECTOR uc SUPPORTS BI-DIRECTIONAL DiSEqCTM 2