LNBS21 datasheet(1/19 Pages) STMICROELECTRONICS

部件名	LNBS21

功能描述	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE

PDF	19 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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November 2002

s

COMPLETE INTERFACE BETWEEN LNB

AND I2CTM BUS

s

BUILT-IN DC/DC CONTROLLER FOR

SINGLE 12V SUPPLY OPERATION

s

ACCURATE BUILT-IN 22KHz TONE

OSCILLATOR

s

SUITS WIDELY ACCEPTED STANDARDS

s

FAST OSCILLATOR START-UP FACILITATES

DiSEqCTM ENCODING

s

BUILT-IN 22KHz TONE DETECTOR

SUPPORTS BI-DIRECTIONAL DiSEqCTM

s

LOOP-THROUGH FUNCTION FOR SLAVE

OPERATION

s

LNB SHORT CIRCUIT PROTECTION AND

DIAGNOSTIC

s

CABLE LENGTH DIGITAL COMPENSATION

s

INTERNAL OVER TEMPERATURE

PROTECTION

DESCRIPTION

Intended for analog and digital satellite STB

receivers/SatTV, sets/PC cards, the LNBS21 is a

monolithic voltage regulator and interface IC,

assembled in PowerSO-20, specifically designed

to provide the power and the 13/18V, 22KHz tone

signalling to the LNB downconverter in the

antennaortothe multiswitchbox. Inthis

application field, it offers a complete solution with

extremely low component count, low power

dissipation together with simple design and I2CTM

standard interfacing.

This IC has a built in DC/DC step-up controller

that, from a single supply source ranging from 8 to

15V, generates the voltages that let the linear

LNBS21

LNB SUPPLY AND CONTROL IC WITH

STEP-UP CONVERTER AND I2C INTERFACE

Enable

I Select

Preregul.+

U.V.lockout

+P.ON res.

Feedback

Step-up

Controller

V Select

Linear Post-reg

+Modulator

+Protections

22KHz

Oscill.

Vup

LT1

OUT

SDA

SCL

DSQIN

Vcc

Diagnostics

I²C

interf.

Tone

Detector

DSQOUT

LT2

DETIN

LNBS21

Byp

Gate

Sense

EXTM

ADDR

SCHEMATIC DIAGRAM

PowerSO-20

类似零件编号 - LNBS21

制造商	部件名	数据表	功能描述
STMicroelectronics	LNBS21	695Kb / 21P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE 05-Oct-2004
STMicroelectronics	LNBS21	695Kb / 21P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE 05-Oct-2004

More results

类似说明 - LNBS21

制造商	部件名	数据表	功能描述
STMicroelectronics	LNBH221	515Kb / 18P	DUAL LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE Apr-2004
	LNBH21	493Kb / 20P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE Apr-2004
	LNBEH21	588Kb / 22P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND IC INTERFACE 05-Jul-2004
	LNBH24	446Kb / 30P	Dual LNB supply and control IC with step-up and I2C interface 11-Feb-2008
	LNBS21	695Kb / 21P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE 05-Oct-2004
	LNBH221	654Kb / 27P	Dual LNB supply and control IC with Step-Up converter and I2C interface 23-Feb-2006
	LNBH25LPQR	909Kb / 28P	LNB supply and control IC with step-up and I2C interface 15-Feb-2012
	LNBH23LQTR	483Kb / 25P	LNB supply and control IC with step-up and I2C interface 29-Nov-2010
	LNBH25S	1Mb / 37P	LNB supply and control IC with step-up and IC interface 24-Mar-2015
	LNBH29	1Mb / 31P	LNB supply and control IC with step-up and I²C interface 15-Mar-2013

More results

LNBS21 数据表(PDF) 1 Page - STMicroelectronics

LNBS21 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - LNBS21

类似说明 - LNBS21

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LNBS21 数据表(PDF) 1 Page - STMicroelectronics

LNBS21 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - LNBS21

类似说明 - LNBS21

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