Datasheet LNBP20, LNBP1X Datasheet (ST)

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Page 1

LNBP supply and control voltage regulator (parallel interface)

Feature summary

■ Complete interface for two LNBs remote supply

and control

■ LNB selection and stand-by function

■ Built-in tone oscillator factory trimmed at

22KHz

■ Fast oscillator start-up facilitates DiSEqC

encoding

■ 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 PowerSO-20 and PowerSO-10, specifically designed to provide the powering voltages and the interfacing signals to the LNB downconverter situated in the antenna

LNBP20 / LNBP1X series

PowerSO-20

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. (See continuous description).

PowerSO-10

Order codes

Package

Part number

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 LNBP20PD-TR

May 2007 Rev. 10 1/24

www.st.com

Page 2

LNBP20 / LNBP1X series

Contents

1 Description (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7 Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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Page 3

LNBP20 / LNBP1X series Description (continued)

1 Description (continued)

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 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.

CC1

and V

. They must be powered

CC2

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

(a)

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 t

determined by the capacitor

off

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

=1/15t

(typ.) and OLF goes

off

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

and ton until the overload is removed. Typical ton+t

off

value is 1200ms when a

off

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 outputs.

The device is packaged 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 overheating damage.

a. External components are needed to comply to level 2.x and above (bidirectional) DiSEqCTM bus hardware

requirements. DiSEqC

is a trademark or EUTELSAT.

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Page 4

Pin configuration LNBP20 / LNBP1X series

2 Pin configuration

Figure 1. Pin connections (top view)

PowerSO-20

Table 1. Pin Description

SYMBOL NAME FUNCTION

CC1

CC2

Supply input

LNBA Output port

Output

SEL

voltage selection:13 or 18V (typ)

EN Port enable

15V to 25V supply. It is automatically selected when V

= 13 or 14V

OUT

22V to 25V supply. It is automatically selected when V

= 18 or 19V

OUT

See truth table voltage and port selection. In stand-by mode this port is powered by the MI pin via the internal bypass switch

Logic control input: see truth table

PowerSO-10

PIN NUMBER vs SALES TYPE (LNBP)

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

2111 111

32222222

43333333

54444444

65555555

OSEL Port selection

GND Ground

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Logic control input: see truth table

Circuit ground. It is internally connected to the die frame

7 9 NA NA NA NA NA NA

1 10 11

6666666

Page 5

LNBP20 / LNBP1X series Pin configuration

Table 1. Pin Description

PIN NUMBER vs SALES TYPE (LNBP)

SYMBOL NAME FUNCTION

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

ENT

CEXT

EXTM

LLC

OLF

MI Master input

22KHz tone

enable

External

capacitor

External

modulator

Line length

compens.

(1V typ)

Over load

flag

Logic control input: see truth table

Timing capacitor used by the dynamic overload protection. Typical application is 4.7μF for a 1200ms cycle

External modulation input. Needs DC decoupling to the AC source. if not used, can be left open.

Logic control input: see truth table

Logic output (open collector). Normally in HIGH IMPEDANCE, goes LOW when current or thermal overload occurs

In stand-by mode, the voltage on MI is routed to LNBA pin. Can be left open if bypass function is not needed

137777777

148888888

15 NA NA NA 9 NA 9 9

16 NA NA 9 NA 9 NA 10

17 NA 9 NA NA 10 10 NA

18 NA 10 10 10 NA NA NA

See truth tables for

LNBB Output port

voltage and port selection

19 10 NA NA NA NA NA NA

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

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Page 6

Maximum ratings LNBP20 / LNBP1X series

3 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

stg

DC Input voltage (V

Output voltage -0.3 to 28 V

CC1

, V

, MI) 28 V

CC2

Output current (LNBA, LNBB) Internally Limited mA

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

Bypass switch current 900 mA

Power dissipation at T

< 85°C 14 W

case

Storage temperature range -40 to +150 °C

Operating junction temperature range -40 to +125 °C

Note: Absolute Maximum Ratings are those values beyond which damage to the device may

occur. Functional operation under these condition is not implied

Table 3. Thermal data

Symbol Parameter PowerSO-20 PowerSO-10 Unit

thJC

Table 4. Logic Controls Truth Table

Thermal resistance junction-case 2 2 °C/W

CONTROL I/O PIN NAME L H

OUT OLF I

OUT

> I

or Tj > 150°C I

OMAX

OUT

< I

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

OMAX

EN OSEL VSEL LLCO V

LXXXV

LNBA

- 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. = 250KW)

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LNBB

Page 7

LNBP20 / LNBP1X series Diagram

4 Diagram

Figure 2. Block diagram

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Page 8

Electrical characteristics LNBP20 / LNBP1X series

5 Electrical characteristics

Table 5. Electrical characteristics 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

ΔV

SVR Supply voltage rejection V

MAX

TONE

EXTM

IN1

IN2

Supply voltage

CC1

Supply voltage

CC2

Output voltage

Line regulation

Load regulation

Output current limiting 500 650 800 mA

Dynamic overload

OFF

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 V

Tone duty cycle ENT=H 40 50 60 %

, tfTone rise and fall time ENT=H 5 10 15 µs

External modulation gain ΔV

External modulation input voltage

=16V, V

IN1

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

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

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

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

= 500 mA, VSEL=H, LLC=L 17.3 18 18.7 V

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

= 500 mA, VSEL=L, LLC=L 12.5 13 13.5 V

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

=15 to 18V, V

IN1

=22 to 25V, V

IN2

= V

=22V, V

IN2

IN1=VIN2

= 50 to 500mA

IN1

Output Shorted, C

/ΔV

OUT

EXTM

IN2

=23V I

OUT

=50mA, unless otherwise specified.)

OUT

=13V 4 40 mV

=18V 4 40 mV

=13 or 18V

80 180 mV

= 23 ± 0.5Vac, fac = 120 Hz, 45 dB

= 4.7µF 1100 ms

EXT

= 4.7µF t

EXT

/15 ms

OFF

, f = 10Hz to 40KHz 5

AC Coupling 400 mV

8/24

EXTM

External modulation impedance

Bypass switch voltage drop (MI to LNBA)

Overload flag pin logic LOW

Overload flag pin OFF state leakage current

Control input pin logic LOW

f = 10Hz to 40KHz 400 Ω

EN=L, I

=8mA 0.28 0.5 V

=300mA, V

CC2-VMI

= 6V 10 µA

=4V 0.35 0.6 V

0.8 V

Page 9

LNBP20 / LNBP1X series Electrical characteristics

Table 5. Electrical characteristics 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

=16V, V

IN1

IN2

=23V I

=50mA, unless otherwise specified.)

OUT

OBK

SHDN

Control input pin logic HIGH

2.5 V

Control pins input current VIH = 5V 20 µA

Output Disabled (EN=L) 0.3 1 mA

Supply current

=500mA 3.1 6 mA

OUT

= V

LNBA

= 22V or floating

IN2

LNBB

= 18V

0.2 3 mA

150 °C

Output backward current

Temperature shutdown threshold

ENT=H, I

EN=L, V V

= V

IN1

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Page 10

Typical characteristics LNBP20 / LNBP1X series

6 Typical characteristics

(unless otherwise specified TJ = 25°C)

Figure 3. Output voltage vs output current Figure 4. Tone duty cycle vs temperature

Figure 5. Tone fall time vs temperature Figure 6. Tone frequency vs temperature

Figure 7. Tone rise time vs temperature Figure 8. Tone amplitude vs temperature

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Page 11

LNBP20 / LNBP1X series Typical characteristics

Figure 9. S.V.R. vs Frequency Figure 10. External modulation vs

temperature

Figure 11. Bypass switch drop vs output

current

Figure 13. Bypass switch drop vs output

current

Figure 12. LNBA External modulation gain vs

frequency

Figure 14. Overload flag pin logic low vs flag

current

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Page 12

Typical characteristics LNBP20 / LNBP1X series

Figure 15. Supply voltage vs temperature Figure 16. Supply voltage vs temperature

Figure 17. Dynamic overload protection (ISC

Figure 19. Tone disable Figure 20. 22KHz Tone

vs time)

Figure 18. Tone enable

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Page 13

LNBP20 / LNBP1X series Typical characteristics

Figure 21. Enable time Figure 22. Disable time

Figure 23. 18V to 13V Change Figure 24. 18V to 13V Change

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Page 14

Typical application schematics LNBP20 / LNBP1X series

7 Typical application schematics

Figure 25. Two antenna ports receiver

17V 24VMCU+V

AUX DATA

47K

10uF

EXTM

OLF

VSEL

ENT

OSEL

LLC

LNBP20CR

VCC1 VCC2

LNBA LNBB

CEXT

GND

1 2

3 15 14

4.7µF

2x 0.1µF

C4 C6C5

2x 47nF

TUNER

ANT CONNECTORS

I/OsVcc

MCU

Figure 26. Single antenna receiver with master receiver port

24V17V

C4 C5

47nF

AUX DATA

MCU+V

47K

10uF

EXTM

OLF

VSEL

ENT

OSEL

LLC LNBP20CR

I/OsVcc

VCC1 VCC2

LNBA LNBB

CEXT

GND

1 2

3 15 14

4.7µF

2x 0.1µF

MCU

I/Os

ANT

MASTER

TUNER

I/Os

14/24

Page 15

LNBP20 / LNBP1X series Typical application schematics

Figure 27. Using serial bus to save MPU I/os

MCU+V

47K

I/Os Vcc

AUX DATA

STR

CLK

4094

MCU+V

17V

EXTM

10uF

OLF

9 5 7

VSEL ENT

EN OSEL LLC

LNBP20CR

MCU

VCC1 VCC2

LNBA LNBB

CEXT

GND

1 2

3 15 14

4.7µF

2x 0.1µF

24V

ANT CONNECTORS

TUNER

C4 C6C5

2x 47nF

SERIAL BUS

Figure 28. Two antenna ports receiver - low cost solution

17V 24V

VCC1

VCC2

LNBA

LNBB

CEXT

GND

4.7µF

MCU

2x 0.1µF

C4 C6C5

2x 47nF

MCU+V

VSEL

ENT

OSEL

LNBP10SP

I/OsVcc

ANT CONNECTORS

TUNER

I/Os

15/24

Page 16

Typical application schematics LNBP20 / LNBP1X series

Figure 29. Connecting together V

VCC1 VCC2

LNBA LNBB

MCU+V

VSEL

ENT

OSEL

LNBP10SP

I/OsVcc

CEXT

GND

CC1

1 2

3 10

4.7µF

and V

MCU

CC2

24V

ANT CONNECTORS

TUNER

0.1µF

C6C5

2x 47nF

I/Os

Figure 30. Single antenna receiver with master receiver port - low cost solution

24V17V

AUX DATA

MCU+V

EXTM

10µF

VSEL

ENT

LNBP13SP

I/OsVcc

VCC1 VCC2

LNBA

CEXT

GND

1 2

C4 C5

C14.7µF

2x 0.1µF

MCU

47nF

TUNER

I/Os

ANT

MASTER

16/24

Page 17

LNBP20 / LNBP1X series Typical application schematics

Figure 31. Single antenna receiver with overload diagnostic

AUX DATA

MCU+V

47K

Vcc I/Os

10µF

24V17V

4 7 5

EXTM

OLF

VSEL ENT EN

LNBP15SP

VCC1 VCC2

LNBA

CEXT

GND

1 2

C14.7µF

MCU

2x 0.1µF

C4 C5

47nF

TUNER

I/Os

ANT

17/24

Page 18

Package mechanical data LNBP20 / LNBP1X series

8 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.

18/24

Page 19

LNBP20 / LNBP1X series Package mechanical data

PowerSO-20 MECHANICAL DATA

DIM.

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 E3 5.8 6.2 0.2283 0.2441

G 0 0.10 0.0000 0.0039

H 15.5 15.9 0.6102 0.6260

h 1.10 0.0433

L 0.80 1.10 0.0314 0.0433

N10°10°

S0° 8°0° 8°

T 10.0 0.3937

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

MIN. TYP MAX. MIN. TYP. MAX.

mm. inch

0056635/I

19/24

Page 20

Package mechanical data LNBP20 / LNBP1X series

PowerSO-10 MECHANICAL DATA

DIM.

A 3.70 0.146

A1 0.10 0.004

A2 3.40 3.60 0.134 0.142

A3 1.25 1.35 0.049 0.053

b 0.40 0.53 0.016 0.021

c 0.35 0.55 0.014 0.022

D 9.40 9.60 0.370 0.378

D1 7.40 7.60 0.291 0.299

E 13.80 14.40 0.543 0.567

E1 9.30 9.50 0.366 0.374

E2 7.20 7.60 0.283 0.299

E3 5.90 6.10 0.232 0.240

e 1.27 0.050

L 0.95 1.65 0.037 0.065

α 0° 8° 0° 8°

MIN. TYP MAX. MIN. TYP. MAX.

mm. inch

20/24

0068039-E

Page 21

LNBP20 / LNBP1X series Package mechanical data

Tape & Reel PowerSO-20 MECHANICAL DATA

DIM.

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

mm. inch

21/24

Page 22

Package mechanical data LNBP20 / LNBP1X series

Tape & Reel PowerSO10 MECHANICAL DATA

DIM.

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

mm. inch

22/24

Page 23

LNBP20 / LNBP1X series Revision history

9 Revision history

Table 6. Revision history

Date Revision Changes

08-Jun-2004 7 Typing Error V

21-Dec-2004 8 Table 2 has been updated on GND row.

07-Sep-2006 9 Add value V

03-May-2007 10 Order codes has been updated.

and VO2 on Table 6 - Page 6.

on table 2 and new template.

23/24

Page 24

LNBP20 / LNBP1X series

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