RT5047A
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Ripple and Noise on LNB
Output
VRIP_PP
20MHz bandwidth limit (GBD)
--
20
--
mVPP
VLNB = 13.3V, ILNB = 50mA to 450mA
VLNB = 18.3V, ILNB = 50mA to 450mA
--
--
38
45
76
90
Load Regulation
VOUT_LOAD
mV
mV
VIN = 9 to 14V, VLNB = 13.3V,
ILNB = 50mA
10
10
--
--
10
10
Line Regulation
VOUT_LINE
VIN = 9 to 14V, VLNB = 18.3V,
ILNB = 50mA
Protection
Output Over-Current Limit ILIM_LNB1
VLNB = 13.3V/18.3V
VLNB short to GND
500
--
550
45
650
--
mA
ms
Output Over-Current
TDIS_ON
Disable Time
Output Over-Current
TDIS_OFF
VLNB short to GND (GBD)
--
1800
--
ms
Disable Time
VIN Under-Voltage Lockout
VUVLO
VIN Fflling
VIN rising
--
--
7.35
7.7
--
8
V
V
Threshold
VIN Turn On Threshold
VIN_TH
VIN Under-Voltage Lockout
Hysteresis
VUVLOHYS
--
350
--
mV
OTP Threshold
OTP Hysteresis
TONE
TOTP
--
--
140
15
--
--
oC
oC
TOTPHYS
TONE Frequency
FTONE
20
22
24
kHz
TONE Amplitude, Peak to
Peak
VTONE_PP
ILNB = 50 to 450mA, CLNB = 200nF
550
700
900
mVPP
TONE Duty Cycle
TONE Rise Time
TONE Fall Time
DCTONE
TRTONE
TFTONE
ILNB = 0 to 450mA, CLNB = 570nF
ILNB = 0 to 450mA, CLNB = 570nF
ILNB = 0 to 450mA, CLNB = 570nF
40
5
50
10
10
--
60
15
15
--
%
s
s
V
5
VTONE_H
VTONE_L
ITONELKG
1.2
--
TONE Logic Input
--
0.4
10
V
TONE Input Leakage
--
5
A
ENABLE, SEL Pins
VEN_H
VEN_L
1.2
--
--
--
5
--
0.4
10
--
V
V
EN Logic Input
EN Input Leakage
SEL Logic Input
SEL Input Leakage
IENLKG
VSEL_H
VSEL_L
ISELLKG
--
A
V
1.2
--
--
--
5
0.4
10
V
--
A
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5047A-01 November 2016
www.richtek.com
5
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