LNBH221 DUAL LNB SUPPLY/CONTROLLER

STMicroelectronics

Description

LNBH221 DUAL LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE PRELIMINARY DATA s s s s s s s s s s s s s s ALL THE FEA.
Intended for analog and digital DUAL Satellite STB receivers/SatTV, sets/PC cards, the LNBH221 is a voltage regulator and interface IC, assembled in P.

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Datasheet Specifications

Part number: LNBH221
Manufacturer: STMicroelectronics ↗
File Size: 515.48 KB
Datasheet: LNBH221_STMicroelectronics.pdf
Description: DUAL LNB SUPPLY/CONTROLLER

Features

* ARE THE SAME FOR BOTH SECTION COMPLETE AND INDEPENDENT INTERFACE BETWEEN LNBs AND RELEVANT I2CTM BUS BUILT-IN DC/DC CONTROLLER FOR SINGLE 12V SUPPLY OPERATION AND HIGH EFFICIENCY (Typ. 93% @ 500mA) LNB OUTPUT CURRENT GUARANTEED UP TO 500mA BOTH COMPLIANT WITH EUTELSAT AND DIRECTV OUTPUT VOLTAGE SPEC

Applications

* during the 22KHz transmission activated by DSQIN pin (or TEN I2C bit), the VOTX pin must be preventively set ON by the TTX I2C bit and, both the 13/18V power supply and the 22KHz tone, are provided by mean of VOTX output. As soon as the tone transmission is expired, the VOTX must be set to OFF by se

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