Datasheet LNBK20PD, LNBK20CR, LNBK16SP, LNBK15SP, LNBK14SP Datasheet (SGS Thomson Microelectronics)

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Page 1

LNBK10 SERIES



LNB SUPPLY AND CONTROLVOLTAGE

REGULATOR (PARALLEL INTERFACE)

■ REDUCED OUTPUT CURRENT VERSION

OF LNBP1X AND LNBP20SERIES

■ COMPLETEINTERFACE FOR TWOLNBs

REMOTE SUPPLYANDCONTROL

■ LNB SELECTIONAND STAND-BYFUNCTION

■ BUILT-INTONEOSCILLATORFACTORY

TRIMMEDAT22KHz

■ FASTOSCILLATORSTART-UP

FACILITATESDiSEqC ENCODING

■ TWOSUPPLY INPUTSFOR LOWEST

DISSIPATION

■ BYPASSFUNCTIONFOR SLAVE

OPERATION

■ LNB SHORTCIRCUIT PROTECTIONAND

DIAGNOSTIC

■ AUXILIARYMODULATIONINPUTEXTENDS

FLEXIBILITY

■ CABLELENGTHCOMPENSATION

■ INTERNALOVERTEMPERATURE

PROTECTION

■ BACKWARDCURRENT 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 coaxial cable.It has thesamefunctionality of the LNBP1X and LNBP20 series, at a reduced output current capability. 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 samecoaxial 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 theMaster Input pin

LNBK20

Multiwatt-15

PowerSo-20 PowerSO-10

(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 pinHIGH).

In order to reduce the power dissipation of the device when the lowest output voltage is selected, the regulator has two Supply Input pins

CC1

and V

V 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 oscillatorso that the DC output is modulatedby a ±0.3 V, 22KHz (typ.) square wave. This internal

. They must be powered

CC2

September 1998

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LNBK10 SERIES - LNBK20

oscillator is factory trimmed within a tolerance of ±2KHz, thus no further adjustments neither external componentsare required. A burst coding of the 22KHz tone can be

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 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 modulatingsignal source to the EXTMpin. When external modulation is not used, the relevant pin canbe leftopen.

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 eitherLNB output, the output is shut-down for a time Toff

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 resumedfor a time t

=1/15t

(typ.) and OLF goes in HIGH

off

IMPEDANCE. If the overload is still present, the protection circuit will cycle again through t

until the overload is removed. Typical ton+t

off

and

value is 1200ms when a 4.7µF externalcapacitor is used.

This dynamic operation can greatly reduce the power dissipation in short circuit condition, still ensuring excellent power-on start up even with highlycapacitiveloads 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 protectionagainst overheatingdamage.

determined by the capacitor connected between

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

off

ORDERING NUMBERS

Type Multiwatt-15 PowerSO-20 PowerSO-10

LNBK10 LNBK11 LNBK12 LNBK13 LNBK14 LNBK15 LNBK16 LNBK20 LNBK20CR (*) LNBK20PD

(*) Available onrequest

PINCONFIGURATIONS

LNBK10SP (*) LNBK11SP (*) LNBK12SP (*) LNBK13SP (*) LNBK14SP (*) LNBK15SP (*) LNBK16SP (*)

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Multiwatt-15 PowerSO-20 PowerSO-10

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LNBK10 SERIES - LNBK20

TABLEA: PIN CONFIGURATIONS

SYMBOL NAME FUNCTION PIN NUMBER vs SALES TYPE (LNBK)

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

CC1

Supply Input 1 15V to27Vsupply. It is

121111111

automatically selected

=13or14V

OUT

232222222

CC2

whenV

Supply Input 2 22V to27Vsupply. It is

automatically selected whenV

LNBA Output Port Seetruth tables for voltage

=18or19V

OUT

343333333 and port selection. In stand-bymode this port is poweredby the MI pinvia theinternal Bypass Switch

VSEL Output Voltage

Selection: 13 or

Logic control input: See truthtable

454444444

18V (ty p)

EN Port Enable Logiccontrolinput: See

565555555 truthtable

OSEL Port Selection Logic control input: See

7 7 9 NANANANANANA truthtable

GND Gr ound Circuit Ground.Itis

internally connected tothe dieframe

10 11 20

ENT 22 KHz Tone

Enable

CEXT External Capacitor Timing capacitor used by

Logic control input: See truthtable

9137777777

10148888888 theDynamicOverload Protection.Typical application is4.7 µFfora 1200ms cycle

EXTM External

Modulat i on

ExternalModulation Input. Needs DC decoupling to

11 15 NA NA NA 9 NA 9 9 theAC source. If notused,

canbe leftopen.

LLC Line L engt h

Compens (+ 1V ty p)

OLF O ver Load F lag Logic output (open

Logic control input: See truthtable

12 16 NA NA 9 NA 9 NA 10

13 17 NA 9 NA NA 10 10 NA Collector). Normally in 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 onMI is routed to LNBApin. Canbe left openif bypass functionis notneeded

LNBB Output Port Seetruth tables for voltage

15 19 10 NA NA NA NA NA NA and port selection.

NOTE: The limited pin availability of thePowerSO-10 package leads todrop some functions.

6666666

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LNBK10 SERIES - LNBK20

ABSOLUTE MAXIMUMRATING

Symbol Parameter Value Unit

DC InputVoltage(VCC1,VCC2,MI) 28 V

OutputCurrent (LNBA, LNBB) Internally limited

Logic InputVoltage (ENT, EN,OSEL, VSEL,LLC) -0.5 to 7 V

BypassSwitchCurrent 900 mA

Power Dissipation at T

tot

StorageTemperature Range - 40 to 150

stg

Operating JunctionTemperature Range - 40 to 125

Absolute Maximum Ratingsare those values beyondwhich damage to the devicemay occur. Functional operation under these conditions is not implied

THERMAL DATA

Symbol Parameter Value Unit

thj-case

Thermal ResistanceJunction-case 2

LOGICCONTROLS TRUTH TABLES

Control I/O Pin Name L H

OUT OLF I

IN ENT 22KHz tone OFF 22KHz t o ne ON IN EN See table below See table below IN OS EL See table below See table below IN V S EL See ta ble below See table below IN LLC See table below See table below

<85oC14W

case

OUT>IOMAX

or Tj>150OCI

OUT<IOMAX

o o

C/W

C C

EN OSEL VSEL LLCP V

LXXX V

LNBA

-0.4V (typ.) Disabled

H L L L 13V (typ. ) Disabled H L H L 18V (t yp.) Disabled H L L H 14V (ty p. ) Disabled H L H H 19V (typ. ) Disabled H H L L Disable d 13V (t yp . ) H H H L Disable d 18V (t yp . ) H H L H D is able d 14V (typ. ) H H H H Disabled 19V ( t yp.)

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

LNBB

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BLOCK DIAGRAM

LNBK10 SERIES - LNBK20

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LNBK10 SERIES - LNBK20

ELECTRICAL CHARACTERISTICS FOR LNBKSERIES (Tj= 0 to 85oC, Ci=0.22 µF, Co=0.1 µF,

EN=H,ENT=L, LLC=L, V

=16V,V

IN1

Symbol Parameter Test Conditions Min. Typ. Max. Unit

IN1VCC1

IN2VCC2

∆V

SupplyVoltage IO=400mA, ENT=H, VSEL=L, LLC=L

SupplyVoltage IO=400mA, ENT=VSEL=H, LLC=L

OutputVoltage IO=400 mA, VSEL=H, LLC=L

OutputVoltage IO=400 mA, VSEL=L, LLC=L

LineRegulation V

LoadRegulation V

SVR Supply VoltageRejection

I t

OutputCurrent Limiting 400 500 600 mA

MAX

Dynamic Overload Protection

OFF

OFF Time

Dynamic Overload Protection

ON Time F A

t G V

ToneFrequency ENT=H 20 22 24 KHz

TONE

ToneAmplitude ENT=H 0.4 0.6 0.8 Vpp

TONE

ToneDuty Cucle ENT=H 40 50 60 %

TONE

ToneRise or FallTime ENT=H 5 10 15 µs

r,tf

External Modulation Gain ∆

EXT M

External Modulation Input

EXTM

Voltage

External Modulation

EXT M

Impedance

BypassSwitchVoltage Drop

(MI toLNBA)

Overload FlagPinLogic Low IOL=8mA 0.28 0.5 V

Overload FlagPinOFF State

Leakage Current Control Input PinLogic Low 0.8 V

Control Input PinLogic High 2.5 V

Control Pins Input Current VIH=5V 20 µA

Supply Current OutputsDisabled (EN=L) 0.3 1 mA

Supply Current ENT=H, I

OutputBackward Current EN=L, V

OBK

Thermal ShutdownThreshold 150

SHDN

IN2

=23V,I

=50mA, (unless otherwisespecified)

OUT

=400mA, ENT=H, VSEL=L, LLC=H1516

=400mA, ENT=VSEL=H, LLC=H

=400 mA, VSEL=H, LLC=H

=400 mA, VSEL=L, LLC=H

=15to19V, V

IN1

=22to26V, V

IN2 IN1=VIN2

=50to400mA

IN1=VIN2

=22V, V

=23± 0.5Vac,fac=50 KHz

Outputshorted, C

/∆V

OUT

, f = 10Hz to 40KHz

EXTM

OUT OUT

EXT

=13V =18V

= 13 or 18V,

OUT

=4.7µF

22 23

17.3 18 19

12.5 13 14

65 150 m V

45 dB

1100 ms

OFF

5 5

/15 ms

27 27

18.7 V

13.5 V

50 50

mV mV

AC Coupling 400 mV

f = 10Hzto 40KHz 400 Ω

EN=L, ISW=300mA, V

= 4V 0.35 0.6 V

CC2-VMI

VOH=6V 10 µA

= 400mA 3.1 6 mA

OUT

0.23mA

IN1=VIN2

LNBA=VLNBB

=22V or floating

=18V

V V

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LNBK10 SERIES - LNBK20

TYPICALPERFORMANCE CHARACTERISTICS (unlessotherwisespecified T

OutputVoltagevs Output Current

Tone Duty Cycle vs Temperature

Tone Frequencyvs Temperature

ToneRise Time vs Temperature

=25oC)

Tone Fall Time vs Temperature

ToneAmplitude vs Temperature

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LNBK10 SERIES - LNBK20

TYPICALPERFORMANCE CHARACTERISTICS (continued)

S.V.R. vs Frequency

LNBAExternal Modulation Gain vs Frequency

ExternalModulation vs Temperature BypassSwitch Dropvs OutputCurrent

Bypass SwitchDrop vs OutputCurrent

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OverloadFlag pin LogicLow vs Flag Current

Page 9

TYPICALPERFORMANCE CHARACTERISTICS (continued)

LNBK10 SERIES - LNBK20

Supply Currentvs Temperature

DynamicOverloadprotection (I

SupplyCurrent vs Temperature

vs Time) ToneEnable

Tone Disable

22 KHz Tone

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LNBK10 SERIES - LNBK20

TYPICALPERFORMANCE CHARACTERISTICS (continued)

EnableTime

DisableTime

18V to 13V Change 13V to 18V Change

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TYPICALAPPLICATIONSCHEMATICS

TWOANTENNA PORTS RECEIVER

10uF

AUX DATA

47K

4 9 5 7

EXTM

OLF

VSEL ENT EN OSEL LLC

LNBK20CR

VCC1

VCC2

LNBA

LNBB

CEXT

4.7µFC4C6C5

GND

LNBK10 SERIES - LNBK20

17V 24VMCU+V

ANT CONNECTORS

TUNER

2x 0.1µF

2x 47nF

I/OsVcc

MCU

SINGLEANTENNA RECEIVERWITHMASTER RECEIVER PORT

24V17V

C4 C5

47nF

AUX DATA

MCU+V

47K

10uF

EXTM

OLF

VSEL

ENT

OSEL

LLC LNBK20CR

VCC1 VCC2

LNBA LNBB

CEXT

GND

1 2

3 15 14

C14.7µF

2x 0.1µF

I/Os

ANT

MASTER

TUNER

I/OsVcc

MCU

I/Os

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LNBK10 SERIES - LNBK20

TYPICALAPPLICATIONSCHEMATICS (continued)

USINGSERIAL BUS TO SAVEMPU I/Os

MCU+V

47K

I/Os Vcc

AUX DATA

STR

CLK

4094

MCU+V

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8

QS QS

14 13 12 11

4 5 6 7

10uF

9 5 7

MCU

EXTM

OLF

VSEL4 ENT

EN OSEL LLC

LNBK20CR

VCC1 VCC2

LNBA LNBB

CEXT

GND

17V 24V

1 2

3 15 14

C4 C6C5

C14.7µF

2x 0.1µF

2x 47nF

SERIAL BUS

TUNER

TWOANTENNA PORTS RECEIVER:LOWCOSTSOLUTION

17V 24V

VCC1

VCC2

LNBA

LNBB

CEXT

GND

C14.7µFC4C6C5

MCU

2x 0.1µF

2x 47nF

MCU+V

VSEL

ENT

OSEL

LNBK10SP

I/OsVcc

ANT CONNECTORS

TUNER

I/Os

12/18

Page 13

TYPICALAPPLICATIONSCHEMATICS (continued)

LNBK10 SERIES - LNBK20

CONNECTINGTOGETHER V

VSEL

ENT

OSEL

MCU+V

I/OsVcc

LNBK10SP

CC1

VCC1 VCC2

LNBA LNBB

CEXT

ANDV

GND

1 2

3 10

4.7µF

MCU

CC2

24V

ANTCONNECTORS

TUNER

0.1µF

C6C5

2x 47nF

I/Os

SINGLEANTENNA RECEIVERWITHMASTER RECEIVER PORT:LOW COSTSOLUTION

24V17V

AUX DATA

MCU+V

EXTM

10µF

VSEL

ENT

LNBK13SP

I/OsVcc

VCC1 VCC2

LNBA

CEXT

GND

1 2

C4 C5

C14.7µF

2x 0.1µF

MCU

47nF

TUNER

I/Os

ANT

MASTER

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LNBK10 SERIES - LNBK20

TYPICALAPPLICATIONSCHEMATICS (continued)

SINGLEANTENNA RECEIVERWITHOVERLOAD DIAGNOSTIC

AUX DATA

MCU+V

47K

Vcc I/Os

10µF

24V17V

4 7 5

EXTM

OLF

VSEL ENT EN

LNBK15SP

VCC1 VCC2

LNBA

CEXT

GND

1 2

C14.7µF

MCU

2x 0.1µF

C4 C5

47nF

TUNER

I/Os

ANT

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LNBK10 SERIES - LNBK20

MULTIWATT-15 MECHANICAL DATA

DIM.

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

MIN. TYP. MAX. MIN. TYP. MAX.

mm inch

0016036

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LNBK10 SERIES - LNBK20

PowerSO-20 MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

mm inch

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

N10

(max.)

T 10.0 0.3937

(1)”D and E1” do not include mold flash or protusions

-Mold flash or protusions shall notexceed0.15mm (0.006”)

hx45°

DETAILA

110

1120

DETAILB

PSO20MEC

lead

Gage Plane

DETAILB

0.35

DETAILA

slug

-C-

SEATINGPLANE

(COPLANARITY)

0056635

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LNBK10 SERIES - LNBK20

PowerSO-10MECHANICAL DATA

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

α 0

610

0.25

DETAIL”A”

0.10 A

E1E3

SEATING PLANE

SEATING

PLANE

0068039-C

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LNBK10 SERIES - LNBK20

Information furnished is believedto be accurate andreliable. However, STMicroelectronics assumes no responsibility forthe consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorizedfor useas critical components inlife support devices or systems without express written approval ofSTMicroelectronics.

The ST logo is a trademark of STMicroelectronics

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