LNBH21 STMicroelectronics, LNBH21 Datasheet
LNBH21
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LNBH21 Summary of contents
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... ESD TOLERANT ON INPUT/ OUTPUT POWER PINS DESCRIPTION TM 2.0 Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBH21 is a monolithic voltage regulator and interface IC, assembled designed to provide the 13/18V power supply and the 22KHz downconverter in the antenna or to the multiswitch box ...
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... 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 R Thermal Resistance Junction-case thj-case PIN CONFIGUARATION (top view) 2/20 PowerSO-20 (Tube) LNBH21PD Parameter Parameter PowerSO-20 (Tape & Reel) LNBH21PD-TR Value Unit -0 -0 Internally Limited ...
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... Clock from I C bus. When the TEN bit of the System Register is LOW, this pin will accept the DiSEqC code from the main controller. The LNBH21 will use this code to modulate the internally generated 22kHz carrier. Set to GND this pin if not used. ...
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... Vup Vup Vup C3(***) C3(***) C3(***) 470nF 470nF 470nF VoTX VoTX VoTX Ceramic Ceramic Ceramic Gate Gate Gate VoRX VoRX VoRX LNBH21 LNBH21 LNBH21 Sense Sense Sense (**) DETIN (**) DETIN (**) DETIN Byp Byp Byp Vcc Vcc Vcc C4(***) C4(***) C4(***) 470nF 470nF 470nF Ceramic Ceramic Ceramic ...
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... Additionally, the LNBH21 is provided with the LLC I when V =0 and +1.5V when V SEL cable (LLC bit HIGH). By mean of the LLC bit, the LNBH21 is also compliant to the American LNB power supply standards that require the higher output voltage level to 19.5V (typ.) (instead of 18V), by simply setting the LLC=1 when V =1. SEL In order to improve design flexibility and to allow implementation of newcoming LNB remote control standards, an analogic modulation input pin is available (EXTM) ...
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... CC TRANSMISSION WITHOUT ACKNOWLEDGE Avoiding to detect the acknowledge of the LNBH21, the µP can use a simpler transmission: simply it waits one clock without checking the slave acknowledging, and sends the new data. This approach of course is less protected from misworking and decreases the noise immunity. ...
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... Figure 2 : TIMING DIAGRAM ON I Figure 3 : ACKNOWLEDGE ON I LNBH21 SOFTWARE DESCRIPTION INTERFACE PROTOCOL The interface protocol comprises start condition ( chip address byte = hex (the LSB bit determines read(=1)/write(=0) transmission sequence of data (1 byte + acknowledge stop condition (P) CHIP ADDRESS MSB ...
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... RECEIVED DATA (I C bus READ MODE) The LNBH21 can provide to the Master a copy of the SYSTEM REGISTER information via I2C bus in read mode. The read mode is Master activated by sending the chip address with R/W bit set the following master generated clocks bits, the LNBH21 issues a byte on the SDA data bus line (MSB transmitted first) ...
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... I/O pins of the µP, thus leaving to the resident firmware the task of encoding and decoding the PWK data in accordance to the DiSEqC protocol. Full compliance of the system to the specification is thus not implied by the bare use of the LNBH21. The system designer should also take in consideration the bus hardware requirements; that can be simply accomplished by the R-L termination connected on the V 4 ...
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... LNBH21 ELECTRICAL CHARACTERISTICS FOR LNBP SERIES (T LLC=TEN=PCL=VSEL= section for I C access to the system register). Symbol Parameter V Supply Voltage IN I Supply Current I V Output Voltage O V Output Voltage O V Line Regulation O V Load Regulation O I Output Current Limiting MAX I Output Short Circuit Current ...
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... GATE I = 100mA GATE = 0 to 85° 12V Test Conditions SDA, SCL SDA, SCL SDA, SCL 0.4 to 4.5V I SDA (open drain 6mA 85°C, V =12V Test Conditions LNBH21 = 12V) IN Min. Typ. Max. Unit 4.5 4.5 200 mV Min. Typ. Max. Unit 0 - 0.6 ...
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... LNBH21 THERMAL DESIGN NOTES During normal operation, the LNBH21 device dissipates some power. At maximum rated output current (750mA), the voltage drop on the linear regulator lead to a total dissipated power that is typically 1.65W. The heat generated requires a suitable heatsink to keep the junction temperature below the over temperature protection threshold. Assuming a 45° ...
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... TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 5 : Output Voltage vs Temperature Figure 6 : Output Voltage vs Temperature Figure 7 : Output Voltage vs Temperature = 25°C) j Figure 8 : Load Regulation vs Temperature Figure 9 : Load Regulation vs Temperature Figure 10 : Supply Current vs Temperature LNBH21 13/20 ...
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... LNBH21 Figure 11 : Supply Current vs Temperature Figure 12 : Supply Current vs Temperature Figure 13 : Dynamic Overload Protection ON Time vs Temperature 14/20 Figure 14 : Dynamic Overload Protection OFF Time vs Temperature Figure 15 : Output Current Limiting vs Temperature Figure 16 : Output Current Limiting vs Temperature ...
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... Figure 17 : Tone Frequency vs Temperature Figure 18 : Tone Amplitude vs Temperature Figure 19 : Tone Duty Cycle vs Temperature Figure 20 : Tone Rise Time vs Temperature Figure 21 : Tone Fall Time vs Temperature Figure 22 : Undervoltage Lockout Threshold vs Temperature LNBH21 15/20 ...
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... LNBH21 Figure 23 : Output Backward Current vs Temperature Figure 24 : DC/DC Converter Efficiency vs Temperature Figure 25 : Current Limit Sense Voltage vs Temperature 16/20 Figure 26 : 22kHz Tone Waveform V =12V, I =50mA, EN=TEN Figure 27 : DSQIN Tone Enable Transient Response V =12V, I =50mA, EN=1, Tone enabled by DSQIN Pin CC O Figure 28 : DSQIN Tone Enable Transient ...
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... Figure 29 : DSQIN Tone Disable Transient Response V =12V, I =50mA, EN=1, Tone enabled by DSQIN Pin CC O LNBH21 17/20 ...
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... LNBH21 DIM. MIN 0. 0.40 c 0.23 D (1) 15.80 E 13. (1) 10. 0. 0˚ T (1) “D and E1” do not include mold flash or protusions - Mold flash or protusions shall not exceed 0.15mm (0.006” DETAIL 45˚ 18/20 PowerSO-20 MECHANICAL DATA mm ...
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... Tape & Reel PowerSO-20 MECHANICAL DATA mm. DIM. MIN 12 15.1 Bo 16.5 Ko 3.8 Po 3.9 P 23.9 W 23.7 TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 30.4 15.3 0.594 16.7 0.650 4.0 0.149 4.1 0.153 24.1 0.941 24.3 0.933 LNBH21 inch TYP. MAX. 12.992 0.519 1.197 0.602 0.658 0.157 0.161 0.949 0.957 19/20 ...
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... LNBH21 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 ...