LNBK20D2 STMicroelectronics, LNBK20D2 Datasheet
LNBK20D2
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LNBK20D2 Summary of contents
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... PROTECTION BACKWARD CURRENT PROTECTION COST-EFFECTIVE VERSION OF LNBP SERIES DESCRIPTION Intended for analog and digital satellite receivers, the LNBK20D2 is a monolithic linear voltage regulator, assembled in SO-20, 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 ...
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... LNBK20D2 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 overcurrent protection circuit works dynamically: ...
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... Timing Capacitor used by the Dynamic Overload protection. Typical application is 4.7 F for a 1200ms cycle External Modulation Input. Needs DC decoupling to the AC source. if not used, can be left open. Parameter² MI) CC2 < 85°C case Parameter LNBK20D2 FUNCTION Value Unit 28 V Internally Limited mA -0 900 ...
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... LNBK20D2 LOGIC CONTROLS TRUTH TABLE CONTROL I/O OUT OSEL NOTE: All logic input pins have internal pull-down resistor (typ. = 250K ) BLOCK DIAGRAM 4/14 PIN NAME OLF I > I OUT ENT 22KHz tone OFF ...
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... EN=L, I =300mA CC2 I =8mA Output Disabled (EN=L) ENT=H, I =500mA OUT EN 18V LNBA LNBB 22V or floating IN1 IN2 LNBK20D2 = 0. =0 Min. Typ. Max 17.3 18 18.7 19 12 150 45 500 650 800 ...
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... LNBK20D2 TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 1 : Output Voltage vs Output Current Figure 2 : Tone Duty Cycle vs Temperature Figure 3 : Tone Fall Time vs Temperature 6/14 = 25°C) j Figure 4 : Tone Frequency vs Temperature Figure 5 : Tone Rise Time vs Temperature Figure 6 : Tone Amplitude vs Temperature ...
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... Figure 7 : S.V.R. vs Frequency Figure 8 : External Modulation vs Temperature Figure 9 : Bypass Switch Drop vs Output Current Figure 10 : LNBA External Modulation gain vs Frequency Figure 11 : Bypass switch Drop vs Output Current Figure 12 : overload Flag pin Logic LOW vs Flag Current LNBK20D2 7/14 ...
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... LNBK20D2 Figure 13 : Supply Voltage vs Temperature Figure 14 : Supply Current vs Temperature Figure 15 : Dynamic Overload protection (I Time) 8/14 Figure 16 : Tone Enable Figure 17 : Tone Disable vs SC Figure 18 : 22KHz Tone ...
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... CEXT 9 9 ENT ENT 4.7µF 4.7µ OSEL OSEL LLC LLC GND GND 2x 0.1µF 2x 0.1µF LNBK20 LNBK20 MCU MCU 24V 24V ANT CONNECTORS ANT CONNECTORS TUNER TUNER 47nF 2x 47nF I/Os I/Os LNBK20D2 9/14 ...
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... LNBK20D2 SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT MCU+V MCU+V 10uF 10uF C2 C2 AUX DATA AUX DATA R1 R1 47K 47K Vcc Vcc I/Os I/Os USING SERIAL BUS TO SAVE MPU I/Os MCU+V MCU AUX DATA AUX DATA 47K 47K 1 1 STR STR ...
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... Different layouts are possible, too. Basic principles, however, suggest to keep the IC and its ground pins approximately in the middle of the dissipating area; to provide as many vias as possible; to design a dissipating area having a shape as square as possible and not interrupted by other copper traces. SO-20 SUGGESTED PCB HEATSINK LAYOUT LNBK20D2 11/14 ...
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... LNBK20D2 DIM. MIN 0 0. 12.60 E 10. 7. 12/14 SO-20 MECHANICAL DATA mm. TYP MAX. 2.65 0.2 2.45 0.49 0.32 0.5 45˚ (typ.) 13.00 10.65 1.27 11.43 7.60 1.27 0.75 ˚ (max.) 8 inch MIN. TYP. MAX. 0.104 0.004 0.008 0.096 0.014 0.019 0.009 0.012 0.020 0.496 0.512 0.393 0.419 0.050 0.450 0.291 0.300 0.020 0.050 ...
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... Tape & Reel SO-20 MECHANICAL DATA mm. DIM. MIN 12 10.8 Bo 13.2 Ko 3.1 Po 3.9 P 11.9 TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 30.4 11 0.425 13.4 0.520 3.3 0.122 4.1 0.153 12.1 0.468 LNBK20D2 inch TYP. MAX. 12.992 0.519 1.197 0.433 0.528 0.130 0.161 0.476 13/14 ...
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... LNBK20D2 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the 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. Specifications mentioned in this publication are subject to change without notice ...