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What is RT5047A?

This electronic component, produced by the manufacturer "Richtek", performs the same function as "Single Output LNB Supply and Control Voltage Regulator".


RT5047A Datasheet PDF - Richtek

Part Number RT5047A
Description Single Output LNB Supply and Control Voltage Regulator
Manufacturers Richtek 
Logo Richtek Logo 


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RT5047A
Single Output LNB Supply and Control Voltage Regulator
General Description
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.
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 DiSEqCTM1.x communications.
The RT5047A has fault protection (over-current,
over-temperature and under-voltage lockout).
The RT5047A are available in a SOP-8 (Exposed Pad)
package to achieve optimized solution for thermal
dissipation.
Ordering Information
RT5047A
Package Type
SP : SOP-8 (Exposed Pad-Option 2)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering
processes.
Features
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)
3% High Accuracy for 0mA to 500mA Current
Output
Push-Pull Output Stage minimizes 13.3V to
18.3V and 18.3V to 13.3V Output Transition Time
External 22kHz Tone Input
Meet DiSEqCTM1.x Protocol
Output Short Circuit Protection
Over-temperature Protection
Applications
LNB Power Supply and Control for Satellite Set-Top
Box
Analog and Digital Satellite Receivers/ Satellite TV,
Satellite PC cards
Pin Configurations
(TOP VIEW)
LNB
BOOST
LX
VIN
8
27
GND
36
9
45
TONE
FAULT
SEL
EN
SOP-8 (Exposed Pad)
Simplified Application Circuit
VIN
CIN1
CIN2
L1 D1
LX
VIN
BOOST
3.3V
R1
EN
TONE
SEL
LNB
RT5047A
FAULT
GND
CBST
Max. 550mA
D3
D2
CLNB
D4
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
DS5047A-00 March 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

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RT5047A equivalent
RT5047A
Parameter
Symbol
Test Conditions
Load Regulation
Line Regulation
Protection
VLNB = 13.3V, ILNB = 50mA to 450mA
VOUT_LOAD
VLNB = 18.3V, ILNB = 50mA to 450mA
VOUT_LINE
VIN = 9 to 14V, VLNB = 13.3V,
ILNB = 50mA
VIN = 9 to 14V, VLNB = 18.3V,
ILNB = 50mA
Output Over-Current Limit ILIM_LNB1
Output Over-Current
Disable Time
TDIS_ON
Output Over-Current
Disable Time
TDIS_OFF
VIN Under-Voltage Lockout
Threshold
VUVLO
VLNB = 13.3V/18.3V
VLNB Short to GND
VLNB Short to GND (GBD)
VIN Falling
VIN Turn On Threshold
VIN_TH
VIN Rising
VIN Under-Voltage Lockout
Hysteresis
VUVLOHYS
OTP Threshold
OTP Hysteresis
TONE
TOTP
TOTPHYS
TONE Frequency
TONE Amplitude, Peak to
Peak
TONE Duty Cycle
FTONE
VTONE_PP
DCTONE
ILNB = 50 to 450mA, CLNB = 200nF
ILNB = 0 to 450mA, CLNB = 570nF
TONE Rise Time
TRTONE
ILNB = 0 to 450mA, CLNB = 570nF
TONE Fall Time
TFTONE
ILNB = 0 to 450mA, CLNB = 570nF
TONE Logic Input
VTONE_H
VTONE_L
TONE Input Leakage
ITONELKG
ENABLE, SEL Pins
EN Logic Input
VEN_H
VEN_L
EN Input Leakage
IENLKG
SEL Logic Input
VSEL_H
VSEL_L
SEL Input Leakage
ISELLKG
Min Typ Max Unit
-- 38 76
mV
-- 45 90
-10 -- 10
mV
-10 -- 10
500 550 650 mA
-- 45 -- ms
-- 1800 --
ms
-- 7.35 --
-- 7.7 8
-- 350 --
-- 140 --
-- 15 --
V
V
mV
oC
oC
20 22 24 kHz
550 700 900 mVPP
40 50 60 %
5 10 15 s
5 10 15 s
1.2 -- -- V
-- -- 0.4 V
-- 5 10 A
1.2 -- -- V
-- -- 0.4 V
-- 5 10 A
1.2 -- -- V
-- -- 0.4 V
-- 5 10 A
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
DS5047A-00 March 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for RT5047A electronic component.


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