LNBH2 STMicroelectronics, LNBH2 Datasheet

no-image

LNBH2

Manufacturer Part Number

LNBH2

Description

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

Manufacturer

STMicroelectronics

Datasheet

1.LNBH2.pdf (20 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

LNBH21/1TM-TR

Manufacturer:

ST

0

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

LNBH21B

Manufacturer:

ST

0

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

LNBH21P

Manufacturer:

ST

0

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

LNBH21PD

Manufacturer:

ST

0

Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

LNBH21PD

Manufacturer:

ST

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

LNBH21PD-TR

Manufacturer:

ST

0

Company:

H&T Electronics

H&T Electronics

Part Number:

LNBH21PD-TR

Quantity:

4 900

Company:

Bonase Electronics (HK) Co., Limited

Bonase Electronics (HK) Co., Limited

Part Number:

LNBH21PDT

Manufacturer:

INTER

Quantity:

5

Company:

Bonase Electronics (HK) Co., Limited

Bonase Electronics (HK) Co., Limited

Part Number:

LNBH221PD-TR

Manufacturer:

PERICOM

Quantity:

70

Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

LNBH221PD-TR

Manufacturer:

ST

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Meier Automation Equipment Co., Limited

Part Number:

LNBH221PDT

Manufacturer:

ST

Quantity:

20 000

Current page: 1 of 20
Download datasheet (494Kb)

BLOCK DIAGRAM

April 2004

COMPLETE INTERFACE BETWEEN LNB

AND I

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

DiSEqC

BUILT-IN 22KHz TONE DETECTOR

SUPPORTS BI-DIRECTIONAL DiSEqC

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 2.0 SPECs, see application circuit on

pag. 5)

CABLE LENGTH DIGITAL COMPENSATION

OVERLOAD AND OVER-TEMPERATURE

INTERNAL PROTECTIONS

2

C

TM

TM

ENCODING

BUS

STEP-UP CONVERTER AND I

Sense

DSQIN

ADDR

Gate

SDA

SCL

Vup

Byp

Vcc

+P.ON res.

Preregul.+

U.V.lockout

I²C interf.

LNB SUPPLY AND CONTROL IC WITH

V Select

Enable

TEN

Step-up PWM

Controller

TM

2.0

LNBH21

Vup-Feedback

DESCRIPTION

Intended for analog and digital satellite STB

receivers/SatTV, sets/PC cards, the LNBH21 is a

monolithic voltage regulator and interface IC,

assembled

designed to provide the 13/18V power supply and

the

downconverter in the antenna or to the multiswitch

box. In this application field, it offers a complete

solution with extremely low component count, low

power dissipation together with simple design and

I

2

22KHz

Oscill.

C

Linear Post-reg

OVERLOAD AND OVER-TEMPERATURE I

DIAGNOSTIC BITs

LNB SHORT CIRCUIT SOA PROTECTION

WITH I

+/- 4KV ESD TOLERANT ON INPUT/

OUTPUT POWER PINS

TM

+Protections

+Modulator

22KHz

standard interfacing.

Detector

Diagnostics

Tone

2

C DIAGNOSTIC BIT

in

tone

DETIN

VoTX

VoRX

ISEL

EXTM

DSQOUT

POWER

PowerSO-20

signalling

2

C INTERFACE

SO-20,

LNBH21

to

specifically

the

LNB

1/20

2

C

Related parts for LNBH2

Related keywords

LNBH2 datasheet
LNBH2 data sheet
LNBH2 pdf datasheet
LNBH2 component
LNBH2 part
LNBH2 distributor
LNBH2 RoHS
LNBH2 datasheet download