LNBH2 - LNB SUPPLY AND CONTROLLER

Description

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

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.

STMicroelectronics

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Datasheet Details

Part number	LNBH2
Manufacturer	STMicroelectronics
File Size	493.03 KB
Description	LNB SUPPLY AND CONTROLLER
Datasheet	LNBH2 Datasheet
Additional preview pages of the LNBH2 datasheet.

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Full PDF Text Transcription

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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 BUILT-IN 22KHz TONE DETECTOR SUPPORTS BI-DIRECTIONAL DiSEqCTM2.0 SEMI-LOWDROP POST REGULATOR AND HIGH EFFICIENCY STEP-UP PWM FOR LOW POWER LOSS: Typ. 0.56W @ 125mA TWO OUTPUT PINS SUITABLE TO BYPASS THE OUTPUT R-L FILTER AND AVOID ANY TONE DISTORSION (R-L FILTER AS PER DiSEqC 2.

Published: Mar 22, 2005 |