RT5047BF

Single Output LNB Supply and Control Voltage Regulator

The RT5047BF 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.

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.

The RT5047BF has protection (over-current, over-temperature and under-voltage lockout).

The RT5047BF is 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
Analog and Digital Satellite Receivers/Satellite TV, Satellite PC cards

Key Spec.
	RT5047BF
Status	Active
Vin (min) (V)	8
Vin (max) (V)	16
Number of Channels	1
Number of Boost Converters	1
Number of LDO Regulators	1
Application	LNB Regulator
Features	Current Mode Control;Internal Compensation
Package Type	PSOP-8

Features

Wide Input Supply Voltage Range : 8V to 16V
Output Current Limit of 550mA with 6ms timer
Low Noise LNB Output Voltage (13.3V and 18.3V by SEL Pin)
±3% High Accuracy for 0mA to 500mA Current Output
Push-Pull Output Stage Minimizes Output Transition Time
External 22kHz Tone Input
Meet DiSEqC^TM1.x Protocol
Output Short Circuit Protection
Over-Temperature Protection

Datasheet
Title	Last Update	Download
Single Output LNB Supply and Control Voltage Regulator	2017/12/21

Technical Documents
Title	Item Type	Last Update	Download
Richtek Product Selection Guide [Jan., 2024]	Selection Guide	2024/01/18

Part Number	Package Type	Package Qty.	Free Sample	Buy From Authorized Distributor
RT5047BFGSP	PSOP-8	2500	Request	Buy from Distributor

Please confirm with our distributor or sales representative for actual stock status.