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LNBH221 Datasheet(PDF) 16 Page - STMicroelectronics

Part # LNBH221
Description  Dual LNB supply and control IC with Step-Up converter and I2C interface
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH221 Datasheet(HTML) 16 Page - STMicroelectronics

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Electrical characteristics
LNBH221
16/27
7
Electrical characteristics
Table 4.
Electrical characteristics of each section (A and B)
(TJ = 0 to 85°C, EN=1, TTX=0/1, LLC=VSEL=TEN=PCL=0, DSQIN=LOW, VIN=12V,
IOUT=50mA, unless otherwise specified. See software description section for I
2C access to
the system register)
Symbol
Parameter
Parameter
Min.
Typ.
Max.
Unit
VIN
Supply Voltage
IOUT = 500 mA
TEN=VSEL=LLC=1
815
V
IIN
Supply Current
EN=TEN=VSEL=LLC=1, No
Load
20
40
mA
EN=0
3.5
7
VOUT
Output Voltage
IOUT = 500 mA
VSEL=1
LLC=0
17.3
18
18.7
V
LLC=1
18.7
19.5
20.3
VOUT
Output Voltage
IO = 500 mA
VSEL=0
LLC=0
12.75
13.25
13.75
V
LLC=1
13.75
14.25
14.75
∆VOUT
Line Regulation
VIN =8 to 15V
VSEL=0
5
40
mV
VSEL=1
5
60
∆VOUT
Load Regulation
VSEL = 0 or 1 IOUT = 50 to
500mA
200
mV
IMAX
Output Current Limiting
500
750
mA
ISC
Output Short Circuit Current
VSEL = 0
300
mA
VSEL = 1
200
tOFF
Dynamic Overload protection
OFF Time
PCL=0Output Shorted
900
ms
tON
Dynamic Overload protection
ON Time
PCL=0Output Shorted
tOFF/1
0
ms
fTONE
Tone Frequency
TEN=1
20
22
24
KHz
ATONE
Tone Amplitude
TEN=1
0.55
0.72
0.9
VPP
DTONE
Tone Duty Cycle
TEN=1
40
50
60
%
tr, tf
Tone Rise and Fall Time
TEN=1
5
8
15
µs
GEXTM
External Modulation Gain
∆VOUT/∆VEXTM, f = 10Hz to
50KHz, TTX=1
6
VEXTM
External Modulation Input
Voltage
AC Coupling, TTX=1
400
mVPP
ZEXTM
External Modulation Impedance f = 10Hz to 50KHz
260
W
fSW
DC/DC Converter Switch
Frequency
220
kHz
fDETIN
Tone Detector Frequency
Capture Range
0.4Vpp sinewave
18
24
kHz



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