Datasheet > RT5047A

RT5047A

更新时间： 2025-07-26 17:01:43

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	1088K
描述
Single Output LNB Supply and Control Voltage Regulator

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技术参数
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RT5047A 技术参数

Status：	Active	Vin (min) (V)：	8
Vin (max) (V)：	16	Number of Channels：	1
Number of Buck Converters：		Number of Boost Converters：	1
Number of Negative Outputs：		Number of LED Drivers：
Number of LDO Regulators：	1	Features：	Current Mode Control;Internal Compensation;OCP;OVP;SCP;UVP
Package Type：	PSOP-8

RT5047A 数据手册

RT5047A

Single Output LNB Supply and Control Voltage Regulator

Features

General Description

 Wide Input Supply Voltage Range : 8V to 16V

 Output Current Limit of 550mA with 45ms timer

 Low Noise LNB Output Voltage (13.3V and 18.3V

by SEL Pin)

The RT5047A is a highly integrated voltage regulator

and interface IC, specifically design for supplying

power and control signals from advanced satellite

set-top box (STB) modules to the LNB down-converter

in the antenna dish or to the multi-switch box.

 3% High Accuracy for 0mA to 500mA Current

Output

The device is consists of the independent current-mode

boost controller and low dropout linear regulator along

with the circuitry required for 22KHz tone shaping to

support DiSEqC^TM1.x communications.

 Push-Pull Output Stage minimizes 13.3V to

18.3V and 18.3V to 13.3V Output Transition Time

 External 22kHz Tone Input

 Meet DiSEqC^TM1.x Protocol

The RT5047A has fault protection (over-current,

over-temperature and under-voltage lockout).

 Output Short Circuit Protection

 Over-Temperature Protection

The RT5047A are available in a SOP-8 (Exposed Pad)

package to achieve optimized solution for thermal

dissipation.

Applications

 LNB Power Supply and Control for Satellite Set-Top

Box

Ordering Information

 Analog and Digital Satellite Receivers/Satellite TV,

Satellite PC cards

RT5047A

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

Pin Configurations

(TOP VIEW)

Lead Plating System

G : Green (Halogen Free and Pb Free)

LNB

BOOST

TONE

FAULT

SEL

Note :

GND

Richtek products are :

VIN

 RoHS compliant and compatible with the current

SOP-8 (Exposed Pad)

requirements of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering

processes.

Simplified Application Circuit

VIN

IN1

BST

BOOST

VIN

IN2

Max. 550mA

LNB

RT5047A

LNB

TONE

SEL

GND

is a registered trademark of Richtek Technology Corporation.

DS5047A-01 November 2016

www.richtek.com

12 3 4 5 6 7...16

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