LNBS21 Datasheet (STMicroelectronics)

LNBS21, LNB SUPPLY/CONTROLLER

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBS21 is a monolithic voltage regulator and interface IC, SCHEMATIC DIAGRAM Gate Sense Step-up Controller assembled in PowerSO-20, specifically designed to provide the power and the 13/18V, 22KHz tone signalling to t

LNBS21 LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE 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 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 DiSEqCTM LOOP-THROUGH FUNCTION FOR SLAVE OPERATION LNB SHORT CIRCUIT PROTECTION AND DIAGNOSTIC CABLE LENGTH DIGITAL

LNBS21 Features

* wires I2C bus interface, consisting of the two