Datasheet LNBK20PD, LNBK20PD-TR, LNBK16SP-TR, LNBK15SP-TR, LNBK14SP-TR Datasheet (SGS Thomson Microelectronics)

1/20July 2003

■ COMPLETE INTERFACE FOR TWO LNBs

REMOTE SUPPLY AND CONTROL

■ LNB SELECTION AND STAND-BY

FUNCTION

■ BUILT-IN TONE OSCILLATOR FACTORY

TRIMMED AT 22KHz

■ FAST OSCILLATORSTART-UPFACILITATES

DiSEqC



ENCODING

■ TWO SUPPLY INPUTS FOR LOWEST

DISSIPATION

■ BYPASS FUNCTION FOR SLAVE

OPERATION

■ LNB SHORT CIRCUIT PROTECTION AND

DIAGNOSTIC

■ AUXILIARY MODULATIO N INPUT EXTENDS

FLEXIBILITY

■ CABLE LENGTH COMPENSATION

■ INTERNAL OVER TEMPERATURE

PROTECTION

■ BACKWARD CURRENT PROTECTION

DESCRIPTION

Intended for analog and digital satellite receivers,
the LNBK 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 coax ial cable. It has the s ame functionality
of the LNBP1X and LNBP20 series, at a reduced
output current capability. Since most satel lite
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 t he Master

Receiver. This electronic switch is close d when
the device is powered and EN pin is LOW.
The regulator outputs c an be logic controlled to be
13 or 18 V (typ.) by mean of the VSEL pin for
remote controlling of LNBs. A dditionally, it is
possible to increment by 1V (typ.) the selected
voltage value to compensate the excess voltage
drop along th e coax ial c able (LLC pin H IG H).
In orde r to reduc e the power dissipation of the
device when the lowes t output voltage is selected,
the regulator has two Suppl y Input pi ns V

CC1

and

V

CC2

. They must be powered respec ti v ely 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 a nd higher power
losses are ac ceptable, both supply pins can be
powered by the same 23V source without
affecting any other circuit performance.
The ENT (T one 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 f ac to ry trimmed within a tolerance of
±2KHz, thus no further adjustments neither
external components are required.
A burst coding of the 22KHz tone can be
accomplished thanks to the fast response of the
ENT i nput and the prompt oscillator start-up. This
helps designers who want to implement t he
DiSEqC



protocols (*).

LNBK10 SERIES

LNBK20

LNB SUPPLY AND CONTROL VOLTAGE

REGULATOR (PARALLEL INTERFACE)

PowerSO-10

1

10

PowerSO-20

Multiwatt-15

LNBK10 SERIES - LNBK20

2/20

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 t o 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. T he
overcurrent protection circuit works dynamically:
as soon as an overloa d is detected in either LNB
output, the out put is shut-down for a tim e Toff
determined by t he 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 t he 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

ton until the overload is removed. T yp ical t

on+toff

value is 1200ms when a 4.7µF external c apac it or
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 agains t overheating damage.

(*): External components are needed to comply to level 2.x and above (bidirectional) DiSEqCbus hardware requirements. DiSEqCis a
trademark or EUTELSAT.

ORDERING CODES

(*) Available on request

PIN CONFIGUARATION (top v iew)

TYPE Multiwatt-15 PowerSO-20 PowerSO-10

LNBK10 LNBK10SP-TR (*)
LNBK11 LNBK11SP-TR (*)
LNBK12 LNBK12SP-TR (*)
LNBK13 LNBK13SP-TR (*)
LNBK14 LNBK14SP-TR (*)
LNBK15 LNBK15SP-TR (*)
LNBK16 LNBKP16SP-R (*)
LNBK20 LNBK20CR LNBK20PD-TR

PowerSo-20 PowerSO-10Multiwatt-15

LNBK10 SERIES - LNBK20

3/20

TABLE A: PIN CONFIGURATIONS

NOTE: the limited pin availability of the PowerSO-10 package leads t o drop some functions.

SYMBOL NAME FUNCTION

PIN NUMBER vs SALES TYPE (LNBK)

20CR 20PD 10SP 11SP 12SP 13SP 14SP 15SP 16SP

V

CC1

Supply Input 1 15V to 27V supply. It is

automatically selected
when V

OUT

=13or14V

12111 111

V

CC2

Supply Input 2 22V to 27V supply. It is

automatically selected
when V

OUT

=18or19V

232222222

LNBA Output Port See truth table voltage

and port selection. In
stand-by mode this port
is powered by the MI pin
via the internal Bypass
Switch

343333333

V

SEL

Output Voltage
Selection:13 or

18V (typ)

Logic control input: see
truth table

454444444

EN Port Enable Logic control input: see

truth table

565555555

OSEL Port Selection Logic control input: see

truth table

7 7 9 NA NA NA NA NA NA

GND Ground Circuit Ground. It is

internally connected to
the die frame

81

10
11
20

66 6666

ENT 22KHz Tone

Enable

Logic control input: see
truth table

9137777777

CEXT External

Capacitor

Timing Capacitor used
by the Dynamic
Overload protection.
Typical application is

4.7µF for a 1200ms
cycle

10148888888

EXTM External

Modulator

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 typ)

Logic control input: see
truth table

12 16 NA NA 9 NA 9 NA 10

OLF Over Load

Flag

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 Output Port See truth tables for

voltage and port
selection

15 19 10 NA NA NA NA NA NA

LNBK10 SERIES - LNBK20

4/20

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.

THERMAL DATA

LOGIC CONTROLS TRUTH TABL E

NOTE: All logic input pins have internal pull-down resistor (typ. = 250KΩ)

Symbol Parameter² Value Unit

V

I

DC Input Voltage (V

CC1,VCC2

, MI)

28 V

I

O

Output Current (LNBA, LNBB)

Internally Limited mA

V

I

Logic Input Voltage (ENT, EN OSEL, VSEL, LLC)

-0.5 to 7 V

I

SW

Bypass Switch Current

900 mA

P

D

Power Dissipation at T

case

< 85°C

14 W

T

stg

Storage Temperature Range

-40 to +150 °C

T

op

Operating Junction Temperature Range

-40 to +125 °C

Symbol Parameter Value Unit

R

thj-case

Thermal Resistance Junction-case

2 °C/W

CONTROL I/O PIN NAME L H

OUT OLF I

OUT>IOMAX

or Tj>150°C I

OUT<IOMAX

IN ENT 22KHz tone OFF 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 LLCO

V

LNBA

V

LNBB

LXXXV

MI

- 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.)
HHHH Disabled 19V (typ.)

LNBK10 SERIES - LNBK20

5/20

BLOCK DIAGRAM

LNBK10 SERIES - LNBK20

6/20

ELECTRICAL CHARACTERISTICS FOR LNBK SERIES (TJ= 0 to 85°C, CI=0.22µF, CO=0.1µF,
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 IO= 400 mA ENT=H, VSEL=L, LLC=L 15 27 V

I

O

= 400 mA ENT=H, VSEL=L, LLC=H 16 27 V

V

IN2

V

CC2

Supply Voltage IO= 400 mA ENT=H, VSEL=L, LLC=L 22 27 V

I

O

= 400 mA VSEL=L, LLC=H 23 27 V

V

O1

Output Voltage IO= 400 mA VSEL=L, LLC=L 17.3 18 18.7 V

I

O

= 400 mA ENT=H, VSEL=L, LLC=H 19 V

V

O2

Output Voltage IO= 400 mA VSEL=L, LLC=L 12.5 13 13.5 V

I

O

= 400 mA ENT=H, VSEL=L, LLC=H 14 V

∆V

O

Line Regulation V

IN1

=15 to 18V V

OUT

=13V 5 50 mV

V

IN2

=22 to 25V V

OUT

=18V 5 50 mV

∆V

O

Load Regulation V

IN1=VIN2

=22V V

OUT

=13 or 18V

I

O

=0to3A

65 150 mV

SVR Supply Voltage Rejection V

IN1=VIN2

=23± 0.5Vacfac= 120 Hz, 45 dB

I

MAX

Output Current Limiting 500 650 800 mA

t

OFF

Dynamic Overload
protection OFF Time

Output Shorted C

EXT

=4.7µF 1100 ms

t

ON

Dynamic Overload
protection ON Time

Output Shorted C

EXT

=4.7µFt

OFF

/15 ms

f

TONE

Tone Frequency ENT=H 20 22 24 KHz

A

TONE

Tone Amplitude ENT=H 0.55 0.72 0.9 Vpp

D

TONE

Tone Duty Cycle ENT=H 40 50 60 %

t

r,tf

Tone Rise and Fall Time ENT=H 5 10 15 µs

G

EXTM

External Modulation Gain ∆V

OUT

/∆V

EXTM

, f = 10Hz to 40KHz 5

V

EXTM

External Modulation Input
Voltage

AC Coupling 400 mVpp

Z

EXTM

External Modulation
Impedance

f = 10Hz to 40KHz 400 Ω

V

SW

Bypass Switch Voltage
Drop (MI to LNBA)

EN=L, ISW=300mA, V

CC2-VMI

=4V 0.35 0.6 V

V

OL

Overload Flag Pin Logic
LOW

IOL=8mA 0.28 0.5 V

I

OZ

Overload Flag Pin OFF
State Leakage Current

VOH=6V 10 µA

V

IL

Control Input Pin Logic
LOW

0.8 V

V

IH

Control Input Pin Logic
HIGH

2.5 V

I

IH

Control Pins Input Current VIH=5V 20 µA

I

CC

Supply Current Output Disabled (EN=L) 0.3 1 mA

ENT=H, I

OUT

=500mA 3.1 6 mA

I

OBK

Output Backward Current EN=L V

LNBA=VLNBB

= 18V

V

IN1=VIN2

= 22V or floating

0.23mA

T

SHDN

Temperature Shutdown
Threshold

150 °C

LNBK10 SERIES - LNBK20

7/20

TYPICAL CHARACTERISTICS

(unless otherwise specified Tj= 25°C)

Figure1 : Output Voltage vs Output Current

Figure2 : T one Duty Cycle vs Temperature

Figure3 : Tone Fall Time vs Temperature

Figure4 : T one Frequency vs T emperature

Figure5 : T one Rise Time vs T emperature

Figure6 : T one Amplitude vs Temperature

LNBK10 SERIES - LNBK20

8/20

Figure7 : S. V.R. vs Frequency

Figure8 : Ex ternal Modulation vs Temperature

Figure9 : By pas s Switch Drop vs Output Current

Figure10 : LNBA Ex ternal Modulation gain vs

Frequency

Figure11 : Bypass switch Drop vs Output
Current

Figure12 : overload Flag pin Logic LOW vs Flag
Current

LNBK10 SERIES - LNBK20

9/20

Figure13 : Supply Voltag e v s Temperature

Figure14 : Supply C urrent vs Temperature

Figure15 : Dynamic O ve rload protection (I

SC

vs

Time)

Figure16 : Tone Enable

Figure17 : Tone Disable

Figure18 : 22KHz Tone

LNBK10 SERIES - LNBK20

10/20

Figure19 : Enable Time

Figure20 : Disable Time

Figure21 : 18V to 13V Change

Figure22 : 18V to 13V Change

LNBK10 SERIES - LNBK20

11/20

TYPICAL APPLICATION SCHEMATICS

TWO ANTENNA PORTS RECEIVER

SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT

JA

JB

ANT CONNECTORS

17V 24VMCU+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 0.1µF

C1

4.7µF

C4 C6C5

2x 47nF

TUNER

I/Os

MCU

I/OsVcc

+

24V17V

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 0.1µF

C1

4.7µF

I/OsVcc

MCU

I/Os

+

LNBK10 SERIES - LNBK20

12/20

USING SERIAL BUS TO SAVE MPU I/Os

TWO ANTENNA PORTS RECEIVER: LOW COST SOLUTION

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 C6C5

2x 47nF

C3

2x 0.1µF

C1

4.7µF

MCU+V

SERIAL
BUS

MCU

I/Os Vcc

+

17V

24V

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 0.1µF

C14.7µF C4 C6C5

2x 47nF

TUNER

I/Os

MCU

MCU+V

I/OsVcc

+

LNBK10 SERIES - LNBK20

13/20

CONNECTING TOGETHER V

CC1

AND V

CC2

SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT: LOW COST SOLUTION

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

4.7µF

C6C5

2x 47nF

C4

0.1µF

TUNER

I/Os

MCU

MCU+V

I/OsVcc

+

24V17V

VCC1

1

VCC2

2

LNBA

3

MI

10

GND

6

CEXT

8

EXTM

9

EN

5

ENT

7

VSEL

4

LNBP13SP

C2

10µF

AUX DATA

TUNER

ANT

MASTER

C4 C5

47nF

C3

2x 0.1µF

C14.7µF

MCU+V

I/OsVcc

MCU

I/Os

+

LNBK10 SERIES - LNBK20

14/20

SINGLE ANTENNA RECEIVER WITH OVERLOAD DIAGNOSTIC

24V17V

MCU+V

C2

10µF

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 0.1µF

C14.7µF

Vcc I/Os

MCU

I/Os

+

LNBK10 SERIES - LNBK20

15/20

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

MULTIWATT-15 MECHANICAL DATA

0016036

LNBK10 SERIES - LNBK20

16/20

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 0.0090 0.0013

D (1) 15.80

16.00

0.6220 0.630
E 13.90 14.50 0.5472 0.5710
e 1.27 0.0500

e3 11.43 0.4500

E1 (1) 10.90 11.10 0.4291 0.4370

E2 2.90 0.1141

G 0 0.10 0.0000 0.0039
h 1.10 0.0433
L 0.80 1.10 0.0314 0.0433
N0˚10˚
S0˚ 8˚0˚ 8˚
T 10.0 0.3937

PowerSO-20 MECHANICAL DATA

0056635

e

a2

A

E

a1

PSO20MEC

DETAIL A

T

D

110

1120

E1

E2

h x45˚

DETAIL A

lead

slug

a3

S

Gage Plane

0.35

L

DETAIL B

R

DETAIL B

(COPLANARITY)

GC

-C-

SEATING PLANE

e3

b

c

NN

(1) “D and E1” do not include mold flash or protusions - Mold flash or protusions shall not exceed 0.15mm (0.006”)

1

LNBK10 SERIES - LNBK20

17/20

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˚ 8˚

PowerSO-10 MECHANICAL DAT A

0068039-C

DETAIL "A"

PLANE

SEATING

L

A1

F

A1

h

A

D

D1

= =
= =

= =

E4

0.10 A

E1E3

C

Q

A

= =

B

B

DETAIL "A"

SEATING

PLANE

= =

= =

E2

610

51

e

B

HE

M

0.25

= =

= =

LNBK10 SERIES - LNBK20

18/20

DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N 60 2.362
T 30.4 1.197

Ao 15.1 15.3 0.594 0.602
Bo 16.5 16.7 0.650 0.658
Ko 3.8 4.0 0.149 0.157
Po 3.9 4.1 0.153 0.161

P 23.9 24.1 0.941 0.949

W 23.7 24.3 0.933 0.957

Tape & Reel PowerSO-20 MECHANICAL DATA

LNBK10 SERIES - LNBK20

19/20

DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 330 12.992

C 12.8 13.2 0.504 0.519
D20.2 0.795
N60 2.362

T 30.4 1.197

Ao 14.9 15.1 0.587 0.594
Bo 9.9 10.1 0.390 0.398
Ko 4.15 4.35 0.163 0.171
Po 3.9 4.1 0.153 0.161

P 23.9 24.1 0.941 0.949

W 23.7 24.3 0.933 0.957

Tape & Reel PowerSO10 M ECHA NICAL DATA

LNBK10 SERIES - LNBK20

20/20

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