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LNBP8 LNBP9
LNB Supply and control voltage regulator
Feature summary

Simplest integrated solution for the LNB remote supply and control 500mA Guaranteed output current Dual input supply for reducing power dissipation 22KHZ Built-in tone oscillator (LNBP9 version) Fast oscillator start-up for DiSEqCTM encoding (LNBP9 version) Auxiliary modulation input for more flexibility (LNBP8 version) Stand-by function Short circuit and overtemperature protection Available in through-hole package
SPAK-7L (PowerFlexTM)
Description
Intended for analog and digital satellite receivers, the LNBP is a monolithic linear voltage regulator, assembled in PowerFlexTM, specifically designed to provide the powering voltages and the interfacing signals to the LNB down-converter.
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The regulator output can be logic controlled to be 13V or 18V (typ.) by mean of the VSEL pin for the remote controlling of the LNB. In order to reduce the power dissipation of the device when the lowest output voltage is selected, the regulator has 2 supply inputs (VCC1 and VCC2). They must be powered respectively at 15V (min.) and 22V (min.), and an internal switch will automatically select the appropriate supply voltage according to the selected output voltage.
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..The TONE pin (only for the LNBP9 version) activates the internal oscillator so that the DC output is modulated by a 22KHz square wave. This internal oscillator is factory trimmed within a tolerance of +/- 2KHz, thus no further adjustment or external components are required. A burst coding of the 22KHz tone can be accomplished thanks to the fast response of the TONE input and the prompt oscillator start-up. This helps designers which want to implement the DiSEqCTM protocols. In order to improve design flexibility and to allow implementation of other LNB remote control standards, an analogic modulation input pin (EXTM) is available (LNBP8 version only). An appropriate DC blocking capacitor must be used to couple the modulating signal source to the EXTM pin. Both versions integrate thermal and short circuit protection. The device is packaged in PowerFlex for an easy through-hole mounting. If an 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.
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When the IC is powered and put in Stand-by (EN pin LOW), the regulator output is disabled and the IC power consumption is reduced to 300A typ.
Order code
Package Part number SPAK-7L LNBP8 LNBP9 September 2006 LNBP8K7 LNBP9K7 Rev. 3 Tape & reel LNBP8K7-R LNBP9K7-R 1/13
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Packaging
LNBP8-LNBP9
Contents
1 2 3 4 5 6 7 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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LNBP8-LNBP9
Pin configuration
1
Figure 1.
Pin configuration
Pin connections (top view)
Table 1.
Pin N 1 2 3 4 5 6 7 (LNBP9) 7 (LNBP8)
Pin descriptions
Name VCC1 VCC2 function
Supply Input 1: 15V to 25V supply. It is automatically selected when VO = 13V Supply Input 2: 22V to 25V supply. It is automatically selected when VO = 18V
OUTPUT Regulator output. It is 13V typ. when VSEL LOW and 18V typ. when VSEL HIGH GND VSEL ENABLE TONE EXTM GROUND
Output Voltage Selection: Logic Control Input; if LOW VO = 13V, when HIGH VO = 18V Logic Control Input; force LOW to put the IC in shutdown Logic Control Input; force HIGH to activate the internal 22KHz tone External Modulation: Needs DC decoupling to the AC source. If not used can be left floating
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Maximum ratings
LNBP8-LNBP9
2
Table 2.
Symbol VCC1, VCC2
Maximum ratings
Absolute maximum ratings
Parameter Input voltage Value -0.3 to 28 -0.3 to 7 -0.3 to 28 -40 to 125 -55 to 150 Unit V V V C C
ENABLE, Logic input voltage TONE, VSEL VO TJ TSTG Output voltage Operating junction temperature range Storage temperature range
Note:
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied
Thermal data
Parameter Thermal resistance junction-case Value
Table 3.
Symbol RthJC
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Unit C/W
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LNBP8-LNBP9
Block diagram
3
Figure 2.
Block diagram
Block diagram
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Electrical characteristics
LNBP8-LNBP9
4
Table 4.
Electrical characteristics
Electrical characteristics for LNBP Series (VCC1 = 16V, VCC2 = 22V, CI1 = CI2 = 0.22F, CO =0.1F, Enable = H, Tone = L (LNBP9), EXTM floating (LNBP8), IO = 50mA, TJ = 0 to 85C unless otherwise specified.)
Parameter Test conditions Min. 15 22 12.5 17.3 13 18 4 4 80 500 LNBP9 version, TONE = H LNBP9 version, TONE = H LNBP9 version, TONE = H LNBP9 version, TONE = H LNBP8 version, VO/VEXTM, f = 10Hz to 40KHz LNBP8 version, AC Coupling 20 0.55 Typ. Max. 25 25 13.5 18.7 40 mV 40 180 Unit V V V V
Symbol VCC1 VCC2 VO VO VO IMAX fTONE ATONE DTONE tr, tf GEXTM VEXTM ZEXTM VIL VIH IIH
VCC Supply voltage input 1 IO = 500 mA, TONE = H, VSEL = L VCC Supply voltage input 2 IO = 500 mA, TONE = H, VSEL = H Output voltage IO = 500 mA, VSEL = L IO = 500 mA, VSEL = H Line regulation VCC1 = 15 to 18V, VSEL = L VCC2 = 22 to 25V, VSEL = H Load regulation Output current limiting Tone frequency Tone amplitude Tone duty cycle Tone rise and fall time External modulation gain External modulation input voltage External modulation impedance Control input logic LOW Control input logic HIGH VCC1 = VCC2 = 22V, IO = 50 to 500mA VSEL = L or H
22
LNBP8 version, f = 10Hz to 40KHz ENABLE, TONE (LNBP9 version), VSEL ENABLE, TONE (LNBP9 version), VSEL VIH = 5V, ENABLE, TONE (LNBP9 version), VSEL Output disabled (ENABLE = L) Output enabled (ENABLE = H), TONE = H, IO = 500mA 2.5
Control pins input current
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Supply current
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mV mA
KHz
0.9 60 15
% s
10 5
400 400 0.8
mV V V
20 0.3 3 150 1 6
A mA mA C
Temperature shutdown
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LNBP8-LNBP9
Typical application circuits
5
Figure 3.
Typical application circuits
LNBP9 with 22KHz Tone control pin
Figure 4.
LNBP8 with external 22KHz Input pin (EXTM)
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Typical application circuits
LNBP8-LNBP9
Figure 5.
Single supply solution
1.
In a single supply configuration the presence of the input resistor in the 12-15 range is suggested only to reduce the device power dissipation during the 13V output condition. The resistor can be omitted in spite of power dissipation increase. The input diodes are mandatory to protect the device from any reverse current.
2.
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LNBP8-LNBP9
Package mechanical data
6
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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.
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Package mechanical data
LNBP8-LNBP9
SPAK-7L MECHANICAL DATA
DIM. A A2 C C1 D D1 F G G1 H1 H2 H3 L L1 L2 M N V 3 8.89 0.79 0.25 9.27 8.89 10.41 7.49 9.14 1.04 6 0.350 0.031 3 1.02 7.87 0.63 1.27 7.62 5.59 9.52 9.14 10.67 0.365 0.350 0.410 mm. MIN. 1.78 0.03 0.25 0.25 1.27 8.13 0.79 0.040 0.310 0.025 0.050 0.3 0.220 TYP MAX. 2.03 0.13 MIN. 0.070 0.001 0.010 0.010 0.050 0.320 0.031 inch TYP. MAX. 0.080 0.005
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0.375 0.360 0.420 0.360 0.041 6
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LNBP8-LNBP9
Package mechanical data
Tape & Reel SPAK-xL MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 9.70 10.85 2.30 3.9 11.9 9.80 10.95 2.40 4.0 12.0 12.8 20.2 60 14.4 9.90 11.05 2.50 4.1 12.1 0.382 0.423 0.090 0.153 0.468 0.386 0.427 0.094 0.157 0.472 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.390 0.512 MIN. TYP. MAX. 7.086 0.519 inch
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0.431 0.098 0.161 0.476
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Revision history
LNBP8-LNBP9
7
Table 5.
Date
Revision history
Revision history
Revision 1 2 3 First release. Remove package heptawatt and add package SPAK-7L. Add value VO on table 2 and new template. Changes
09-Nov-2004 04-Jul-2005 20-Sep-2006
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LNBP8-LNBP9
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