LNBP16

更新时间： 2024-11-26 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	205K
描述
LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE

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中文翻译

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LNBP16 数据手册

LNBP10 SERIES

LNBP20

LNB SUPPLY AND CONTROL VOLTAGE

REGULATOR (PARALLEL INTERFACE)

■

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

FLEXIBILITY

Multiwatt-15

■

CABLE LENGTH COMPENSATION

INTERNAL OVER TEMPERATURE

PROTECTION

PowerSo-20

PowerSO-10

■

BACKWARD CURRENT PROTECTION

DESCRIPTION

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).

In order to reduce the power dissipation of the

device when the lowest output voltage is

selected, the regulator has two Supply Input pins

Intended for analog and digital satellite receivers,

the LNBP 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. 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.

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

oscillator is factory trimmed within a tolerance of

±2KHz, thus no further adjustments neither

external components are required.

For slave operation in single dish, dual receiver

systems, the bypass function is implemented by

an electronic switch between the Master Input pin

(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.

A burst coding of the 22KHz tone can be

1/18

September 1998

12 3 4 5 6 7...18

中文翻译

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与LNBP16相关器件

型号	品牌	获取价格	描述	数据表
LNBP16SP	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBP16SP-TR	STMICROELECTRONICS	获取价格	LNBP supply and control voltage regulator (parallel interface)
LNBP1X	STMICROELECTRONICS	获取价格	LNBP supply and control voltage regulator (parallel interface)
LNBP20	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBP20_07	STMICROELECTRONICS	获取价格	LNBP supply and control voltage regulator (parallel interface)
LNBP20CR	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBP20PD	STMICROELECTRONICS	获取价格	LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE
LNBP20PD-TR	STMICROELECTRONICS	获取价格	LNBP supply and control voltage regulator (parallel interface)
LNBP20SP	STMICROELECTRONICS	获取价格	LNBP20SP
LNBP21	STMICROELECTRONICS	获取价格	LNBP SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE

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