Datasheet > LNBK11SP

LNBK11SP

更新时间： 2024-11-23 22:29:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
18页	206K
描述
LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE

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中文翻译

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LNBK11SP 数据手册

LNBK10 SERIES

LNBK20

LNB SUPPLY AND CONTROL VOLTAGE

REGULATOR (PARALLEL INTERFACE)

■

REDUCED OUTPUT CURRENT VERSION

OF LNBP1X AND LNBP20 SERIES

COMPLETE INTERFACE FOR TWO LNBs

REMOTE SUPPLY AND CONTROL

LNB SELECTION AND STAND-BY FUNCTION

BUILT-INTONE OSCILLATOR FACTORY

TRIMMED AT 22KHz

■

FAST OSCILLATORSTART-UP

FACILITATESDiSEqC ENCODING

TWO SUPPLY INPUTS FOR LOWEST

DISSIPATION

BYPASSFUNCTION FOR SLAVE

OPERATION

LNB SHORT CIRCUIT PROTECTION AND

DIAGNOSTIC

AUXILIARYMODULATION INPUT EXTENDS

Multiwatt-15

FLEXIBILITY

PowerSo-20

PowerSO-10

■

CABLE LENGTH COMPENSATION

INTERNAL OVER TEMPERATURE

PROTECTION

■

BACKWARD CURRENT PROTECTION

(MI) and the LNBA pin, thus leaving all LNB

powering and control functions to the Master

Receiver. This electronic switch is closed when

the device is powered and EN pin is LOW.

The regulator outputs can be logic controlled to

be 13 or 18 V (typ.) by mean of the VSEL pin for

remote controlling of LNBs. Additionally, it is

possible to increment by 1V (typ.) the selected

voltage value to compensate the excess voltage

drop along the coaxial cable (LLC pin HIGH).

DESCRIPTION

Intended for analog and digital satellite receivers,

the LNBK is a monolithic linear voltage regulator,

assembled in Multiwatt-15, PowerSO-20 and

PowerSO-10, specifically designed to provide the

powering voltages and the interfacing signals to

the LNB downconverter situated in the antenna

via the coaxial cable. It has the same functionality

of the LNBP1X and LNBP20 series, at a reduced

output current capability. Since most satellite

receivers have two antenna ports, the output

voltage of the regulator is available at one of two

logic-selectable output pins (LNBA, LNBB). When

the IC is powered and put in Stand-by (EN pin

LOW), both regulator outputs are disabled to

allow the antenna downconverters to be

supplied/controlled by others satellite receivers

sharing the same coaxial lines. In this occurrence

the device will limit at 3 mA (max) the backward

current that could flow from LNBA and LNBB

output pins to GND.

In order to reduce the power dissipation of the

device when the lowest output voltage is

selected, the regulator has two Supply Input pins

V_CC1and V_CC2

They must be powered

respectively at 16V (min) and 23V (min), and an

internal switch automatically will select the

suitable supply pin according to the selected

output voltage. If adequate heatsink is provided

and higher power losses are acceptable, both

supply pins can be powered by the same 23V

source without affecting any other circuit

performance.

The ENT (Tone Enable) pin activates the internal

oscillator so that the DC output is modulated by a

±0.3 V, 22KHz (typ.) square wave. This internal

For slave operation in single dish, dual receiver

systems, the bypass function is implemented by

an electronic switch between the Master Input pin

1/18

September 1998

12 3 4 5 6 7...18

中文翻译

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与LNBK11SP相关器件

型号	品牌	获取价格	描述	数据表
LNBK12	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK12SP	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK12SP-TR	STMICROELECTRONICS	获取价格	DUAL OUTPUT, FIXED POSITIVE REGULATOR, PDSO10, POWER, SO-10
LNBK13	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK13SP	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK13SP-TR	STMICROELECTRONICS	获取价格	DUAL OUTPUT, FIXED POSITIVE REGULATOR, PDSO10, POWER, SO-10
LNBK14	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK14SP	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBK14SP-TR	STMICROELECTRONICS	获取价格	暂无描述
LNBK15	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE

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