SGS Thomson Microelectronics LNBP20PD-TR, LNBP12SP-TR, LNBP11SP-TR, LNBP10SP-TR, LNBP16SP-TR Datasheet

LNBP SUPPLY AND CONTROL VOLTAGE

REGULATOR (PARALLEL INTERFACE)

■ 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-UP FACILITATES

DiSEqC

■ TWO SUPPLY INPUTS FOR LOWEST

DISSIPATION

■ BYPASS FUNCTION FOR SLAVE

OPERATION

■ LNB SHORT CIRCUIT PROTECTION AND

DIAGNOSTIC

■ AUXILIARY MODULATION INPUT EXTENDS

FLEXIBILITY

■ CABLE LENGTH COMPENSATION

■ INTERNAL OVER TEMPERATURE

PROTECTION

■ 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 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 regulat or outputs are disabled to allow
the antenna downconverters to be supplied/
controlled by others satellite receivers sharing the
same coaxial lines. I n this oc c urrence the device
will limit at 3 mA (max) the backw ard 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 t he Master Input pin
(MI) and the LNBA pin, thu s leaving all LNB
powering and control functions to the Master
Receiver. This electronic switch is close d when
the device is powered and EN pin is LOW.



ENCODING

LNBP10 SERIES

LNBP20

Multiwatt-15

10

1

Power SO-20

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 th e c oax ial c able (LLC pin HIGH).
In orde r to reduc e the power dissipation of the
device when the l owes t output voltage is selected,
the regulator has two Supply Input pins V
V

. They must be powered respec ti v ely at 16V

CC2

(min) and 23V (min), and an internal switch
automatically will select the suitable supply pin
according to the s elected output voltage. If
adequate heatsink is provided and 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 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
accomplished thanks to the fast response of the
ENT i nput and the prompt oscillator start-up. This
helps designers who want to implement the
DiSEqC



protocols (*).
In order to improve design flexibility and to allow
implementation of newcoming LNB remote contro l
standards, an analogic modulation

PowerSO-10

CC1

and

1/20June 2003

LNBP10 SERIES - LNBP20

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. T he
overcurrent protection circuit works dynamically:
as soon as an overload i s detected in either LNB
output, th e output is shut-down for a time t

off

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

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

=1/15t

on

(typ.) and OLF goes in HIG H

off

IMPEDANCE. If the overload is still present, the
protection circuit will cycle again through t
ton until the ov erload is removed. Typical t

and

off

on+toff

value is 1200ms when a 4.7µF 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 out puts.
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.

ORDERING CODES

TYPE Multiwatt-15 PowerSO-20 PowerSO-10

LNBP10 LNBP10SP-TR (*)
LNBP11 LNBP11SP-TR (*)
LNBP12 LNBP12SP-TR (*)
LNBP13 LNBP13SP-TR (*)
LNBP14 LNBP14SP-TR (*)
LNBP15 LNBP15SP-TR (*)
LNBP16 LNBP16SP-TR (*)
LNBP20 LNBP20CR LNBP20PD-TR

(*) Available on request

PIN CONFIGUARATION (top view)

2/20

PowerSo-20 PowerSO-10Multiwatt-15

TABLE A: PIN CONFIGURATIONS

LNBP10 SERIES - LNBP20

SYMBOL NAME FUNCTION

PIN NUMBER vs SALES TYPE (LNBP)

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

V

V

Supply Input 1 15V to 25V supply. It is

CC1

automatically selected
when V

Supply Input 2 22V to 25V supply. It is

CC2

automatically selected
when V

=13or14V

OUT

=18or19V

OUT

LNBA Output Port See truth table voltage

12111 111

232222222

343333333
and port selection. In
stand-by mode this port
is powered by the MI pin
via the internal Bypass
Switch

V

SEL

Output Voltage
Selection:13 or

Logic control input: see
truth table

454444444

18V (typ)

EN Port Enable Logic control input: see

565555555
truth table

OSEL Port Selection Logic control input: see

7 7 9 NA NA NA NA NA NA
truth table

GND Ground Circuit Ground. It is

internally connected to
the die frame

81

10
11

66 6666

20

ENT 22KHz Tone

Enable

CEXT External

Capacitor

Logic control input: see
truth table

Timing Capacitor used
by the Dynamic

9137777777

10148888888

Overload protection.
Typical application is

4.7µF for a 1200ms
cycle

EXTM External

Modulator

External Modulation
Input. Needs DC

11 15 NA NA NA 9 NA 9 9

decoupling to the AC
source. if not used, can
be left open.

LLC Line Length

Compens.

Logic control input: see
truth table

12 16 NA NA 9 NA 9 NA 10

(1V typ)

OLF Over Load

Flag

Logic output (open
collector). Normally in

13 17 NA 9 NA NA 10 10 NA

HIGH IMPEDANCE,
goes LOW when current
or thermal overload
occurs

MI Master Input In stand-by mode, the

14 18 NA 10 10 10 NA NA NA
voltage on MI is routed
to LNBA pin. Can be left
open if bypass function
is not needed

LNBB Output Port See truth tables for

15 19 10 NA NA NA NA NA NA
voltage and port
selection

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

3/20

LNBP10 SERIES - LNBP20

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter² Value Unit

V
I
V

I

SW

P

T

T

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

THERMAL DATA

Symbol Parameter Value Unit

R

thj-case

LOGIC CONTROLS TRUTH TABLE

DC Input Voltage (V

I

Output Current (LNBA, LNBB)

O

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

I

CC1,VCC2

Bypass Switch Current
Power Dissipation at T

D

Storage Temperature Range

stg

Operating Junction Temperature Range

op

Thermal Resistance Junction-case

case

, MI)

< 85°C

28 V

Internally Limited mA

-0.5 to 7 V
900 mA

14 W

-40 to +150 °C

-40 to +125 °C

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

LXXXV

V

LNBA

- 0.4V (typ.) Disabled

MI

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.)

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

V

LNBB

4/20

BLOCK DIAGRAM

LNBP10 SERIES - LNBP20

5/20

LNBP10 SERIES - LNBP20

ELECTRICALCHARACTERISTICS FOR LNBP SERIES (TJ=0 to 85°C, CI=0.22µF, CO=0.1µF, EN=H,

ENT=L, LLC=L, V

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

V

V

V

∆V

∆V

SVR Supply Voltage Rejection V

I

t

f

TONE

A
D

G
V

Z

V

V

I

T

V

IN1

IN2

MAX

OFF

t

ON

CC1

V

CC2

Output Voltage IO= 500 mA VSEL=L, LLC=L 17.3 18 18.7 V

O1

Output Voltage IO= 500 mA VSEL=L, LLC=L 12.5 13 13.5 V

O2

Line Regulation V

O

Load Regulation V

O

Output Current Limiting 500 650 800 mA
Dynamic Overload

protection OFF Time
Dynamic Overload

protection ON Time
Tone Frequency ENT=H 20 22 24 KHz

Tone Amplitude ENT=H 0.55 0.72 0.9 Vpp

TONE

Tone Duty Cycle ENT=H 40 50 60 %

TONE

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

t

r,tf

External Modulation Gain ∆V

EXTM

External Modulation Input

EXTM

Voltage
External Modulation

EXTM

Impedance
Bypass Switch Voltage

SW

Drop (MI to LNBA)
Overload Flag Pin Logic

OL

LOW

I

Overload Flag Pin OFF

OZ

State Leakage Current
Control Input Pin Logic

V

IL

LOW
Control Input Pin Logic

V

IH

HIGH
Control Pins Input Current VIH=5V 20 µA

I

IH

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

I

CC

Output Backward Current EN=L V

OBK

Temperature Shutdown

SHDN

Threshold

=16V, V

IN1

IN2

=23V I

=50mA, unless otherwise specified.)

OUT

Supply Voltage IO= 500 mA ENT=H, VSEL=L, LLC=L 15 25 V

= 500 mA ENT=H, VSEL=L, LLC=H 16 25 V

I

O

Supply Voltage IO= 500 mA ENT=H, VSEL=L, LLC=L 22 25 V

= 500 mA VSEL=L, LLC=H 23 25 V

I

O

I

= 500 mA ENT=H, VSEL=L, LLC=H 19 V

O

= 500 mA ENT=H, VSEL=L, LLC=H 14 V

I

O

=15 to 18V V

IN1

=22 to 25V V

V

IN2
IN1=VIN2

I

O

IN1=VIN2

=22V V

=50to500mA

=23± 0.5Vacfac= 120 Hz, 45 dB

Output Shorted C

Output Shorted C

OUT

/∆V

, f = 10Hz to 40KHz 5

EXTM

=13V 4 40 mV

OUT

=18V 4 40 mV

OUT

=13 or 18V

OUT

=4.7µF 1100 ms

EXT

=4.7µFt

EXT

80 180 mV

/15 ms

OFF

AC Coupling 400 mVpp

f = 10Hz to 40KHz 400 Ω

EN=L, ISW=300mA, V

CC2-VMI

=4V 0.35 0.6 V

IOL=8mA 0.28 0.5 V

VOH=6V 10 µA

0.8 V

2.5 V

ENT=H, I

V

IN1=VIN2

=500mA 3.1 6 mA

OUT

LNBA=VLNBB

= 18V

0.23mA

= 22V or floating

150 °C

6/20