LNBP10 SERIES
LNBP20
LNB SUPPLY AND CONTROL VOLTAGE
REGULATOR (PARALLEL INTERFACE)
September 1998
s
COMPLETE INTERFACE FOR TWO LNBs
REMOTE SUPPLY AND CONTROL
s
LNB SELECTION AND STAND-BY FUNCTION
s
BUILT-IN TONE OSCILLATOR FACTORY
TRIMMED AT 22KHz
s
FAST OSCILLATOR START-UP
FACILITATES DiSEqC
TM
ENCODING
s
TWO SUPPLY INPUTS FOR LOWEST
DISSIPATION
s
BYPASS FUNCTION FOR SLAVE
OPERATION
s
LNB SHORT CIRCUIT PROTECTION AND
DIAGNOSTIC
s
AUXILIARY MODULATION INPUT EXTENDS
FLEXIBILITY
s
CABLE LENGTH COMPENSATION
s
INTERNAL OVER TEMPERATURE
PROTECTION
s
BACKWARD CURRENT PROTECTION
DESCRIPTION
Intended for analog and digital satellite receivers,
the LNBP is a monolithic linear voltage regulator,
assembled in Multiwatt-15, PowerSO-20 and
PowerSO-10, specifically designed to provide the
powering voltages and the interfacing signals to
the LNB downconverter situated in the antenna
via the coaxial cable. Since most satellite
receivers have two antenna ports, the output
voltage of the regulator is available at one of two
logic-selectable output pins (LNBA, LNBB). When
the IC is powered and put in Stand-by (EN pin
LOW), both regulator outputs are disabled to
allow
the
antenna
downconverters
to
be
supplied/controlled by others satellite receivers
sharing the same coaxial lines. In this occurrence
the device will limit at 3 mA (max) the backward
current that could flow from LNBA and LNBB
output pins to GND.
For slave operation in single dish, dual receiver
systems, the bypass function is implemented by
an electronic switch between the Master Input pin
(MI) and the LNBA pin, thus leaving all LNB
powering and control functions to the Master
Receiver. This electronic switch is closed when
the device is powered and EN pin is LOW.
The regulator outputs can be logic controlled to
be 13 or 18 V (typ.) by mean of the VSEL pin for
remote controlling of LNBs. Additionally, it is
possible to increment by 1V (typ.) the selected
voltage value to compensate the excess voltage
drop along the coaxial cable (LLC pin HIGH).
In order to reduce the power dissipation of the
device when the
lowest output
voltage is
selected, the regulator has two Supply Input pins
V
CC1
and
V
CC2
.
They
must
be
powered
respectively at 16V (min) and 23V (min), and an
internal switch
automatically will
select the
suitable supply pin according to the selected
output voltage. If adequate heatsink is provided
and higher power losses are acceptable, both
supply pins can be powered by the same 23V
source
without
affecting
any
other
circuit
performance.
The ENT (Tone Enable) pin activates the internal
oscillator so that the DC output is modulated by a
0.3 V, 22KHz (typ.) square wave. This internal
oscillator is factory trimmed within a tolerance of
2KHz, thus no further adjustments neither
external components are required.
A burst coding of the 22KHz tone can be
Multiwatt-15
1
10
PowerSo-20
PowerSO-10
1/18
accomplished thanks to the fast response of the
ENT input and the prompt oscillator start-up. This
helps designers who want to implement the
DiSEqC
TM
protocols (*).
In order to improve design flexibility and to allow
implementation
of
newcoming
LNB
remote
control standards, an analogic modulation input
pin is available (EXTM). An appropriate DC
blocking capacitor must be used to couple the
modulating signal source to the EXTM pin. When
external modulation is not used, the relevant pin
can be left open.
Two pins are dedicated to the overcurrent
protection/monitoring: CEXT
and
OLF.
The
overcurrent protection circuit works dynamically:
as soon as an overload is detected in either LNB
output, the output is shut-down for a time Toff
determined by the capacitor connected between
CEXT and GND. Simultaneously the OLF pin,
that is an open collector diagnostic output flag,
from HIGH IMPEDANCE state goes LOW. After
the time has elapsed, the output is resumed for a
time t
on
=1/15t
off
(typ.) and OLF goes in HIGH
IMPEDANCE. If the overload is still present, the
protection circuit will cycle again through t
off
and
t
on
until the overload is removed. Typical t
on
+t
off
value is 1200ms when a 4.7
F external capacitor
is used.
This dynamic operation can greatly reduce the
power dissipation in short circuit condition, still
ensuring excellent power-on start up even with
highly capacitive loads on LNB outputs.
The device is packaged in Multiwatt15 for
thru-holes mounting and in PowerSO-20 for
surface mounting. When a limited functionality in
a smaller package matches design needs, a
range of cost-effective PowerSO-10 solutions is
also offered. All versions have built-in thermal
protection against overheatingdamage.
(*): External components are needed to comply to level 2.x and above (bidirectional) DiSEqC
TM
bus hardware requirements. DiSEqC
TM
is
a trademark of EUTELSAT.
ORDERING NUMBERS
Type
Multiwatt-15
PowerSO-20
PowerSO-10
LNBP10
LNBP11
LNBP12
LNBP13
LNBP14
LNBP15
LNBP16
LNBP20
LNBP20CR
LNBP20PD
LNBP10SP
LNBP11SP
LNBP12SP
LNBP13SP
LNBP14SP
LNBP15SP
LNBP16SP
PIN CONFIGURATIONS
Multiwatt-15
PowerSO-20
PowerSO-10
LNBP10 SERIES - LNBP20
2/18
TABLE A: PIN CONFIGURATIONS
SYMBOL
NAME
FUNCTION
PIN NUMBER vs SALES TYPE (LNBP)
20CR 20PD 10SP 11SP 12SP 13SP 14SP 15SP 16SP
V
CC1
Supply Input 1
15V to 25V supply. It is
automatically selected
when V
OUT
= 13 or 14V
1
2
1
1
1
1
1
1
1
V
CC2
Supply Input 2
22V to 25V supply. It is
automatically selected
when V
OUT
= 18 or 19V
2
3
2
2
2
2
2
2
2
LNBA
Out put Port
See truth tables for voltage
and port selection. In
stand-by mode this port is
powered by the MI pin via
the internal Bypass Switch
3
4
3
3
3
3
3
3
3
VSEL
Output Voltage
Selection: 13 or
18V (typ)
Logic control input: See
truth table
4
5
4
4
4
4
4
4
4
EN
Port Enable
Logic control input: See
truth table
5
6
5
5
5
5
5
5
5
OSEL
Port Selection
Logic control input: See
truth table
7
7
9
NA
NA
NA
NA
NA
NA
GND
G round
Circuit Ground. It is
internally connected to the
die frame
8
1
10
11
20
6
6
6
6
6
6
6
ENT
22 KHz Tone
Enable
Logic control input: See
truth table
9
13
7
7
7
7
7
7
7
CEXT
External Capacitor
Timing capacitor used by
the Dynamic Overload
Protection. Typical
application is 4.7
F for a
1200 ms cycle
10
14
8
8
8
8
8
8
8
EXTM
External
Modulation
External Modulation Input.
Needs DC decoupling to
the AC source. If not used,
can be left open.
11
15
NA
NA
NA
9
NA
9
9
LLC
Line Length
Compens. (1V t yp)
Logic control input: See
truth table
12
16
NA
NA
9
NA
9
NA
10
OLF
Over Load F lag
Logic output (open
Collector). Normally in
HIGH IMPEDANCE, goes
LOW when current or
thermal overload occurs.
13
17
NA
9
NA
NA
10
10
NA
MI
Master Input
In stand-by mode, the
voltage on MI is routed to
LNBA pin. Can be left
open if bypass function is
not needed
14
18
NA
10
10
10
NA
NA
NA
LNBB
Out put Port
See truth tables for voltage
and port selection.
15
19
10
NA
NA
NA
NA
NA
NA
NOTE: The limited pin availability of the PowerSO-10 package leads to drop some functions.
LNBP10 SERIES - LNBP20
3/18
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
V
i
DC Input Voltage (VCC1, VCC2, MI)
28
V
I
o
Output Current (LNBA, LNBB)
Internally limited
V
i
Logic Input Voltage (ENT, EN, OSEL, VSEL, LLC)
-0.5 to 7
V
I
SW
Bypass Switch Current
900
mA
P
t ot
Power Dissipation at T
case
< 85
o
C
14
W
T
stg
Storage Temperature Range
- 40 t o 150
o
C
T
o p
Operating Junction Temperature Range
- 40 t o 125
o
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions
is not implied
THERMAL DATA
Symbol
Parameter
Value
Unit
R
t hj- case
Thermal Resistance Junction-case
2
o
C/W
LOGIC CONTROLS TRUTH TABLES
Control I/O
Pin Name
L
H
OUT
O LF
I
O UT
> I
OMAX
or T
j
> 150
O
C
I
OUT
< I
OMAX
IN
ENT
22KHz t one O FF
22KHz tone ON
IN
EN
See table below
See table below
IN
OSEL
See table below
See table below
IN
VSEL
See table below
See table below
IN
LLC
See table below
See table below
EN
OSEL
VSEL
LLCP
V
LNBA
V
LNBB
L
X
X
X
V
M I
-0. 4V (typ.)
Disabled
H
L
L
L
13V (typ.)
Disabled
H
L
H
L
18V (typ.)
Disabled
H
L
L
H
14V (typ.)
Disabled
H
L
H
H
19V (typ.)
Disabled
H
H
L
L
Disabled
13V (typ.)
H
H
H
L
Disabled
18V (typ.)
H
H
L
H
Disabled
14V (typ.)
H
H
H
H
Disabled
19V (typ.)
NOTE: All logic input pins have internal pull-down resistor (typ. = 250K
)
LNBP10 SERIES - LNBP20
4/18
BLOCK DIAGRAM
LNBP10 SERIES - LNBP20
5/18
ELECTRICAL CHARACTERISTICS FOR LNBP SERIES (T
j
= 0 to 85
o
C, C
i
= 0.22
F, C
o
= 0.1
F,
EN=H, ENT=L, LLC= L, V
IN1
= 16V, V
IN2
= 23V, I
OUT
= 50mA, (unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
IN1
V
CC1
Supply Voltage
I
O
= 500mA, ENT=H, VSEL=L, LLC=L
I
O
= 500mA, ENT=H, VSEL=L, LLC=H
15
16
25
25
V
V
V
IN2
V
CC2
Supply Voltage
I
O
= 500mA, ENT=VSEL=H, LLC=L
I
O
= 500mA, ENT=VSEL=H, LLC=H
22
23
25
25
V
V
V
O1
Output Voltage
I
O
= 500 mA, VSEL=H, LLC=L
I
O
= 500 mA, VSEL=H, LLC=H
17.3
18
19
18.7
V
V
V
O2
Output Voltage
I
O
= 500 mA, VSEL=L, LLC=L
I
O
= 500 mA, VSEL=L, LLC=H
12.5
13
14
13.5
V
V
V
O
Line Regulation
V
IN1
= 15 to 18 V, V
OUT
= 13 V
V
IN2
= 22 to 25 V, V
OUT
= 18 V
4
4
40
40
mV
mV
V
O
Load Regulation
V
IN1
= V
IN2
= 22 V, V
OUT
= 13 or 18V,
I
O
= 50 to 500 mA
80
180
mV
SVR
Supply Voltage Rejection
V
IN1
= V
IN2
= 23
0.5V
ac
, f
ac
= 50 KHz
45
dB
I
MAX
Output Current Limiting
500
650
800
mA
t
O FF
Dynamic Overload Protection
OFF Time
Output shorted, C
EXT
= 4.7
F
1100
ms
t
ON
Dynamic Overload Protection
ON Time
Output shorted, C
EXT
= 4.7
F
t
OFF
/15
ms
F
TO NE
Tone Frequency
ENT=H
20
22
24
KHz
A
TONE
Tone Amplitude
ENT=H
0.4
0. 6
0.8
Vpp
D
T ONE
Tone Duty Cucle
ENT=H
40
50
60
%
t
r
, t
f
Tone Rise or Fall Time
ENT=H
5
10
15
s
G
EXT M
External Modulation Gain
V
OUT
/
V
EXTM
, f = 10Hz to 40KHz
5
V
EXTM
External Modulation Input
Voltage
AC Coupling
400
mV
pp
Z
EXT M
External Modulation
Impedance
f = 10Hz to 40KHz
400
V
SW
Bypass Switch Voltage Drop
(MI to LNBA)
EN=L, I
SW
= 300mA, V
CC2
-V
MI
= 4V
0.35
0.6
V
V
OL
Overload Flag Pin Logic Low
I
OL
= 8mA
0.28
0.5
V
I
O Z
Overload Flag Pin OFF State
Leakage Current
V
OH
= 6V
10
A
V
IL
Control Input Pin Logic Low
0.8
V
V
I H
Control Input Pin Logic High
2.5
V
I
IH
Control Pins Input Current
V
IH
= 5V
20
A
I
CC
Supply Current
Outputs Disabled (EN=L)
0. 3
1
mA
I
CC
Supply Current
ENT=H, I
OUT
= 500 mA
3. 1
6
mA
I
OBK
Output Backward Current
EN=L, V
LNBA
= V
LNBB
= 18V
V
IN1
= V
IN2
= 22V or floating
0. 2
3
mA
T
SHDN
Thermal Shutdown Threshold
150
o
C
LNBP10 SERIES - LNBP20
6/18
Output Voltage vs Output Current
Tone Duty Cycle vs Temperature
Tone Fall Time vs Temperature
Tone Rise Time vs Temperature
Tone Amplitude vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T
j
=25
o
C)
Tone Frequency vs Temperature
LNBP10 SERIES - LNBP20
7/18
S.V.R. vs Frequency
External Modulation vs Temperature
Bypass Switch Drop vs Output Current
Overload Flag pin Logic Low vs Flag Current
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
LNBA External Modulation Gain vs Frequency
Bypass Switch Drop vs Output Current
LNBP10 SERIES - LNBP20
8/18
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Supply Current vs Temperature
Dynamic Overload protection (I
SC
vs Time)
Tone Enable
22 KHz Tone
Supply Current vs Temperature
Tone Disable
LNBP10 SERIES - LNBP20
9/18
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Enable Time
18V to 13V Change
13V to 18V Change
Disable Time
LNBP10 SERIES - LNBP20
10/18
TYPICAL APPLICATION SCHEMATICS
JA
JB
ANT CONNECTORS
17V
24V
MCU+V
VCC1
1
VCC2
2
LNBA
3
LNBB
15
GND
8
LLC
12
EXTM
11
OSEL
7
EN
5
ENT
9
VSEL
4
OLF
13
MI
14
CEXT
10
LNBP20CR
C2
10uF
R1
47K
AUX DATA
C3
2x 0.1
F
C1
4.7
F
C4
C6
C5
2x 47nF
TUNER
I/Os
MCU
I/Os
Vcc
+
SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT
24V
17V
MCU+V
VCC1
1
VCC2
2
LNBA
3
LNBB
15
GND
8
LLC
12
EXTM
11
OSEL
7
EN
5
ENT
9
VSEL
4
OLF
13
MI
14
CEXT
10
LNBP20CR
C2
10uF
AUX DATA
R1
47K
TUNER
ANT
MASTER
C4
C5
47nF
C3
2x 0.1
F
C1
4.7
F
I/Os
Vcc
MCU
I/Os
+
TWO ANTENNA PORTS RECEIVER
LNBP10 SERIES - LNBP20
11/18
TYPICAL APPLICATION SCHEMATICS (continued)
VCC1
1
VCC2
2
LNBA
3
LNBB
15
GND
8
LLC
12
EXTM
11
OSEL
7
EN
5
ENT
9
VSEL
4
OLF
13
MI
14
CEXT
10
LNBP20CR
C2
10uF
MCU+V
R1
47K
AUX DATA
STR
1
D
2
CLK
3
OE
15
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS
9
QS
10
4094
TUNER
JA
JB
ANT
CONNECTORS
C4
C6
C5
2x 47nF
C3
2x 0.1
F
C1
4.7
F
MCU+V
SERIAL
BUS
MCU
I/Os
Vcc
+
17V
24V
TWO ANTENNA PORTS RECEIVER: LOW COST SOLUTION
JA
JB
ANT CONNECTORS
17V
24V
VCC1
1
VCC2
2
LNBA
3
LNBB
10
GND
6
CEXT
8
OSEL
9
EN
5
ENT
7
VSEL
4
LNBP10SP
C3
2x 0.1
F
C1
4.7
F
C4
C6
C5
2x 47nF
TUNER
I/Os
MCU
MCU+V
I/Os
Vcc
+
USING SERIAL BUS TO SAVE MPU I/Os
LNBP10 SERIES - LNBP20
12/18
JA
JB
ANT CONNECTORS
24V
VCC1
1
VCC2
2
LNBA
3
LNBB
10
GND
6
CEXT
8
OSEL
9
EN
5
ENT
7
VSEL
4
LNBP10SP
C1
4.7
F
C6
C5
2x 47nF
C4
0.1
F
TUNER
I/Os
MCU
MCU+V
I/Os
Vcc
+
SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT: LOW COST SOLUTION
24V
17V
VCC1
1
VCC2
2
LNBA
3
MI
10
GND
6
CEXT
8
EXTM
9
EN
5
ENT
7
VSEL
4
LNBP13SP
C2
10
F
AUX DATA
TUNER
ANT
MASTER
C4
C5
47nF
C3
2x 0.1
F
C1
4.7
F
MCU+V
I/Os
Vcc
MCU
I/Os
+
CONNECTING TOGETHER V
CC1
AND V
CC2
TYPICAL APPLICATION SCHEMATICS (continued)
LNBP10 SERIES - LNBP20
13/18
24V
17V
MCU+V
C2
10
F
VCC1
1
VCC2
2
LNBA
3
GND
6
CEXT
8
EXTM
9
EN
5
ENT
7
VSEL
4
OLF
10
LNBP15SP
AUX DATA
R1
47K
TUNER
ANT
C4
C5
47nF
C3
2x 0.1
F
C1
4.7
F
Vcc
I/Os
MCU
I/Os
+
SINGLE ANTENNA RECEIVER WITH OVERLOAD DIAGNOSTIC
TYPICAL APPLICATION SCHEMATICS (continued)
LNBP10 SERIES - LNBP20
14/18
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
5
0.197
B
2.65
0.104
C
1.6
0.063
D
1
0.039
E
0.49
0.55
0.019
0.022
F
0.66
0.75
0.026
0.030
G
1.02
1.27
1.52
0.040
0.050
0.060
G1
17.53
17.78
18.03
0.690
0.700
0.710
H1
19.6
0.772
H2
20.2
0.795
L
21.9
22.2
22.5
0.862
0.874
0.886
L1
21.7
22.1
22.5
0.854
0.870
0.886
L2
17.65
18.1
0.695
0.713
L3
17.25
17.5
17.75
0.679
0.689
0.699
L4
10.3
10.7
10.9
0.406
0.421
0.429
L7
2.65
2.9
0.104
0.114
M
4.25
4.55
4.85
0.167
0.179
0.191
M1
4.63
5.08
5.53
0.182
0.200
0.218
S
1.9
2.6
0.075
0.102
S1
1.9
2.6
0.075
0.102
Dia1
3.65
3.85
0.144
0.152
0016036
MULTIWATT-15 MECHANICAL DATA
LNBP10 SERIES - LNBP20
15/18
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.60
0.1417
a1
0.10
0.30
0.0039
0.0118
a2
3.30
0.1299
a3
0
0.10
0
0.0039
b
0.40
0.53
0.0157
0.0209
c
0.23
0.32
0.009
0.0126
D (1)
15.80
16.00
0.6220
0.6299
E
13.90
14.50
0.5472
0.570
e
1.27
0.050
e3
11.43
0.450
E1 (1)
10.90
11.10
0.4291
0.437
E2
2.90
0.1141
G
0
0.10
0
0.0039
h
1.10
0.0433
L
0.80
1.10
0.0314
0.0433
N
10
o
(max.)
S
8
o
(max.)
T
10.0
0.3937
e
a2
A
E
a1
PSO20MEC
DETAILA
T
D
1
10
11
20
E1
E2
h x 45
DETAILA
lead
slug
a3
S
Gage Plane
0.35
L
DETAILB
R
DETAIL B
(COPLANARITY)
G
C
- C -
SEATING PLANE
e3
b
c
N
N
0056635
PowerSO-20 MECHANICAL DATA
(1) "D and E1" do not include mold flash or protusions
- Mold flash or protusions shall not exceed 0.15mm (0.006")
LNBP10 SERIES - LNBP20
16/18
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.35
3.65
0.132
0.144
A1
0.00
0.10
0.000
0.004
B
0.40
0.60
0.016
0.024
c
0.35
0.55
0.013
0.022
D
9.40
9.60
0.370
0.378
D1
7.40
7.60
0.291
0.300
E
9.30
9.50
0.366
0.374
E1
7.20
7.40
0.283
0.291
E2
7.20
7.60
0.283
0.300
E3
6.10
6.35
0.240
0.250
E4
5.90
6.10
0.232
0.240
e
1.27
0.050
F
1.25
1.35
0.049
0.053
H
13.80
14.40
0.543
0.567
h
0.50
0.002
L
1.20
1.80
0.047
0.071
q
1.70
0.067
0
o
8
o
DETAIL "A"
PLANE
SEATING
L
A1
F
A1
h
A
D
D1
=
=
=
=
==
E4
0.10 A
E1
E3
C
Q
A
==
B
B
DETAIL "A"
SEATING
PLANE
==
==
E2
6
10
5
1
e
B
H
E
M
0.25
==
==
0068039-C
PowerSO-10 MECHANICAL DATA
LNBP10 SERIES - LNBP20
17/18
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LNBP10 SERIES - LNBP20
18/18
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