lnbh221 STMicroelectronics, lnbh221 Datasheet

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... ESD tolerant on input/output power pins Description Intended for analog and digital DUAL Satellite STB receivers/SatTV, sets/PC LNBH221 is a voltage regulator and interface IC, February 2006 Dual LNB supply and control IC with Step-Up converter and I²C interface TM assembled designed to provide the power 13/18V, and the ...

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... Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3 Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.4 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5.5 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5.6 Transmission without acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . .11 6 LNBH221 software description (same for both section 6.1 Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.2 System register (SR, 1 Byte 6.3 Transmitted data (I2C BUS write mode 6.4 Received data (I2C bus READ MODE 6.5 Power-On I2C interface reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6 ...

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... SDA Enable Enable Enable SCL SCL I²C I²C I²C TEN TEN TEN 22KHz 22KHz 22KHz Oscill. Oscill. Oscill. LNBH221- section B LNBH221- section B Gate Gate Step-up Step-up Step-up Controller Controller Controller Vup Vup Vcc Vcc Preregul.+ Preregul.+ Preregul.+ U.V.lockout U.V.lockout U.V.lockout +P.ON res. ...

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... Note: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Table 2. Thermal Data Symbol R Thermal Resistance Junction-Case thJC 4/27 Parameter Parameter LNBH221 Value Unit - Internally Limited mA -0 ...

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... When the TEN bit of the System Register is LOW, this pin will accept the DiSEqC code from the main µcontroller. Each section of the LNBH221 will use this code to modulate the internally generated 22kHz carrier. Set to GND this pin if not used. 22kHz Tone Detector Input. Must be AC coupled to the DiSEqC bus ...

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... Circuit Ground internally connected to the die frame for heat dissipation. Output of the linear post regulator/modulator to the LNB. See truth table for voltage selections connected to ground. 2 Four I C bus addresses available by setting the Address Pin level voltage. LNBH221 PIN Number Sect ...

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... Typical application circuits for each section: A and B D1 1N4001 D1 1N4001 IC1 IC1 Vup Vup C2 C2 220µF 220µ 470nF 470nF Ceramic Ceramic Gate Gate LNBH221 LNBH221 Sense Sense Section A and B Section A and 470nF 470nF Ceramic Ceramic Vcc Vcc SDA SDA SCL SCL DSQIN DSQIN GND ...

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... Vcc C4(***) C4(***) 470nF 470nF Ceramic Ceramic EXTM EXTM SDA SDA ADDRESS ADDRESS SCL SCL DSQIN (**) DSQIN (**) DSQOUT DSQOUT GND GND LNBH221 D4(***) D4(***) C8(***) C8(***) BAT43 BAT43 100nF 100nF 270µH 270µH D3(***) D3(***) 15 ohm 15 ohm C7(***) C7(***) BAT43 BAT43 100nF 100nF (*) see note ...

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... LNBs. Additionally, the LNBH221 is provided with the LLC I voltage value (+1V when VSEL=0 and +1.5V when VSEL=1) to compensate for the excess voltage drop along the coaxial cable (LLC bit HIGH). By mean of the LLC bit, the LNBH221 is also compliant to the American LNB power supply standards that require the higher output voltage level to 19 ...

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... Semiconductors Bus Interface (one for each section) Data transmission from main µP to the LNBH221 and viceversa takes place through the 2 2 wires I C bus interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be externally connected). ...

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... V 5.6 Transmission without acknowledgement Avoiding to detect the acknowledge of the LNBH221, 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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... Application information . Figure 6. Timing Diagram On I Figure 7. Acknowledge On I 12/ Bus 2 C Bus LNBH221 ...

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... S= Start P= Stop R/W= Read/Write 6.2 System register (SR, 1 Byte) MSB PCL TTX R,W= read and write bit R= Read-only bit All bits reset Power-On LNBH221 software description (same for both section) LSB MSB 0 0 R/W ACK TEN LLC VSEL DATA ...

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... C 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 LNBH221 issues a byte on the SDA data bus line (MSB transmitted first). At the ninth clock bit the MCU master can: - acknowledge the reception, starting in this way the transmission of another byte from the LNBH221 ...

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... LNBH221. 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 pins of the LNBH221, as shown in the Typical Application Circuit on page OUT avoid any losses due to the R-L impedance during the tone transmission, the LNBH221 has ...

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... IN VSEL=1 VSEL = OUT 500mA VSEL = 0 VSEL = 1 PCL=0Output Shorted PCL=0Output Shorted TEN=1 TEN=1 TEN=1 TEN=1 ∆V /∆ 10Hz to OUT EXTM 50KHz, TTX=1 AC Coupling, TTX=1 0.4Vpp sinewave LNBH221 =12V access to Min. Typ. Max. Unit 3.5 7 17.3 18 18.7 V 18.7 19.5 20 ...

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LD39150 Table 4. Electrical characteristics of each section (A and 85°C, EN=1, TTX=0/1, LLC=VSEL=TEN=PCL=0, DSQIN=LOW =50mA, unless otherwise specified. See software description section for I OUT the system register) Symbol Parameter V ...

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... Thermal design notes 8 Thermal design notes During normal operation, the LNBH221 device dissipates some power. At rated output current of 500mA on each section output, the voltage drop on both linear regulators lead to a total dissipated power that is typically 2W. 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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LD39150 9 Typical performance characteristics (of each section 25°C, unless otherwise specification) J Figure 9. Output Voltage vs Temperature Figure 11. Output Voltage vs Temperature Figure 13. Load Regulation vs Temperature Typical performance characteristics (of each section) Figure ...

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... Typical performance characteristics (of each section) Figure 15. Supply Current vs Temperature Figure 17. Dynamic Overload Protection ON Time vs Temperature Figure 19. Output Current Limiting vs Temperature 20/27 Figure 16. Supply Current vs Temperature Figure 18. Dynamic Overload Protection OFF Time vs Temperature Figure 20. Tone Frequency vs Temperature LNBH221 ...

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LD39150 Figure 21. Tone Amplitude vs Temperature Figure 23. Tone Rise Time vs Temperature Figure 25. Undervoltage Lockout Threshold vs Temperature Typical performance characteristics (of each section) Figure 22. Tone Duty Cycle vs Temperature Figure 24. Tone Fall Time vs ...

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... Response V =12V, I =50mA, EN=1, Tone enabled by DSQIN Pin CC O 22/27 Figure 28. Current Limit Sense Voltage vs Temperature Figure 30. DSQIN Tone Enable Transient Response V =12V, I =50mA, EN=1, Tone enabled by DSQIN Pin CC O Figure 32. DSQIN Tone Disable Transient Response V =12V, I =50mA, EN=1, Tone enabled by DSQIN Pin CC O LNBH221 ...

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LD39150 10 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 ...

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... MIN. TYP. 0.1417 0.0039 0.0118 0.1299 0 0.0039 0.0087 0.0150 0.0091 0.0126 0.6220 0.6299 0.3701 0.3858 0.5472 0.5709 0.4291 0.4370 0.1142 0.2283 0.2441 0.0256 0.4350 0.0000 0.0039 0.6102 0.6260 0.0433 0.0315 0.0433 0° ”) 0096119/B LNBH221 MAX. 10° 8° ...

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LD39150 Tape & Reel PowerSO-36 MECHANICAL DATA DIM. MIN 12 15.1 Bo 16.5 Ko 3.8 Po 3.9 P 23.9 W 23.7 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 30.4 15.3 ...

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... Revision history 11 Revision history Table 8. Document revision history Date Revision 08-Apr-2005 4 23-Feb-2006 5 26/27 Maturity Changed. The Figure 3. and Figure 4. has been updated. Changes LNBH221 ...

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... LD39150 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...